./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem12_label00.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem12_label00.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 48b75eefd299c5e358d6f7c99602002262fce20f93b0f1303552b05fdc1d7cc8 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 12:08:14,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 12:08:14,495 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 12:08:14,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 12:08:14,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 12:08:14,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 12:08:14,552 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 12:08:14,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 12:08:14,557 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 12:08:14,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 12:08:14,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 12:08:14,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 12:08:14,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 12:08:14,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 12:08:14,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 12:08:14,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 12:08:14,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 12:08:14,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 12:08:14,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 12:08:14,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 12:08:14,582 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 12:08:14,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 12:08:14,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 12:08:14,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 12:08:14,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 12:08:14,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 12:08:14,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 12:08:14,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 12:08:14,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 12:08:14,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 12:08:14,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 12:08:14,592 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 12:08:14,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 12:08:14,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 12:08:14,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 12:08:14,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 12:08:14,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 12:08:14,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 12:08:14,597 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 12:08:14,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 12:08:14,598 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 12:08:14,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 12:08:14,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 12:08:14,631 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 12:08:14,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 12:08:14,632 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 12:08:14,632 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 12:08:14,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 12:08:14,633 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 12:08:14,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 12:08:14,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 12:08:14,634 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 12:08:14,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 12:08:14,635 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 12:08:14,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 12:08:14,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 12:08:14,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 12:08:14,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 12:08:14,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 12:08:14,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 12:08:14,636 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 12:08:14,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 12:08:14,637 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 12:08:14,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 12:08:14,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 12:08:14,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 12:08:14,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 12:08:14,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:08:14,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 12:08:14,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 12:08:14,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 12:08:14,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 12:08:14,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 12:08:14,640 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 12:08:14,640 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 12:08:14,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 12:08:14,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48b75eefd299c5e358d6f7c99602002262fce20f93b0f1303552b05fdc1d7cc8 [2022-07-19 12:08:14,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 12:08:14,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 12:08:14,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 12:08:14,923 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 12:08:14,924 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 12:08:14,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem12_label00.c [2022-07-19 12:08:14,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800853612/64a40e1ac55b46f99fa83279364dee15/FLAGda76b5683 [2022-07-19 12:08:15,717 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 12:08:15,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label00.c [2022-07-19 12:08:15,755 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800853612/64a40e1ac55b46f99fa83279364dee15/FLAGda76b5683 [2022-07-19 12:08:15,857 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800853612/64a40e1ac55b46f99fa83279364dee15 [2022-07-19 12:08:15,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 12:08:15,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 12:08:15,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 12:08:15,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 12:08:15,868 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 12:08:15,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:08:15" (1/1) ... [2022-07-19 12:08:15,870 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b1e67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:15, skipping insertion in model container [2022-07-19 12:08:15,870 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:08:15" (1/1) ... [2022-07-19 12:08:15,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 12:08:15,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 12:08:16,171 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label00.c[2236,2249] [2022-07-19 12:08:16,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:08:16,905 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 12:08:16,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem12_label00.c[2236,2249] [2022-07-19 12:08:17,324 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:08:17,344 INFO L208 MainTranslator]: Completed translation [2022-07-19 12:08:17,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17 WrapperNode [2022-07-19 12:08:17,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 12:08:17,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 12:08:17,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 12:08:17,347 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 12:08:17,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:17,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:17,754 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4757 [2022-07-19 12:08:17,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 12:08:17,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 12:08:17,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 12:08:17,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 12:08:17,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:17,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:17,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:17,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:18,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:18,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:18,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:18,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 12:08:18,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 12:08:18,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 12:08:18,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 12:08:18,317 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (1/1) ... [2022-07-19 12:08:18,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:08:18,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:08:18,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 12:08:18,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 12:08:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 12:08:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 12:08:18,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 12:08:18,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 12:08:18,449 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 12:08:18,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 12:08:22,000 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 12:08:22,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 12:08:22,032 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 12:08:22,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:08:22 BoogieIcfgContainer [2022-07-19 12:08:22,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 12:08:22,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 12:08:22,055 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 12:08:22,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 12:08:22,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 12:08:15" (1/3) ... [2022-07-19 12:08:22,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d03979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:08:22, skipping insertion in model container [2022-07-19 12:08:22,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:08:17" (2/3) ... [2022-07-19 12:08:22,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73d03979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:08:22, skipping insertion in model container [2022-07-19 12:08:22,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:08:22" (3/3) ... [2022-07-19 12:08:22,061 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label00.c [2022-07-19 12:08:22,089 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 12:08:22,090 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 12:08:22,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 12:08:22,194 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23d1627c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5504278 [2022-07-19 12:08:22,194 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 12:08:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 12:08:22,224 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:22,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:08:22,225 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:22,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:22,232 INFO L85 PathProgramCache]: Analyzing trace with hash -884752143, now seen corresponding path program 1 times [2022-07-19 12:08:22,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:22,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064901211] [2022-07-19 12:08:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:22,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:08:22,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:22,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064901211] [2022-07-19 12:08:22,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064901211] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:22,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:22,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:08:22,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462686335] [2022-07-19 12:08:22,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:22,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:22,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:22,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:22,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:22,524 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:25,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:25,741 INFO L93 Difference]: Finished difference Result 2388 states and 4629 transitions. [2022-07-19 12:08:25,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:08:25,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-07-19 12:08:25,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:25,764 INFO L225 Difference]: With dead ends: 2388 [2022-07-19 12:08:25,764 INFO L226 Difference]: Without dead ends: 1506 [2022-07-19 12:08:25,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:25,774 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 819 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:25,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 481 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 12:08:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-07-19 12:08:25,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-07-19 12:08:25,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1505 states have (on average 1.6385382059800664) internal successors, (2466), 1505 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2466 transitions. [2022-07-19 12:08:25,892 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2466 transitions. Word has length 15 [2022-07-19 12:08:25,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:25,893 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2466 transitions. [2022-07-19 12:08:25,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:25,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2466 transitions. [2022-07-19 12:08:25,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 12:08:25,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:25,896 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 12:08:25,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 12:08:25,897 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:25,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:25,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1356240323, now seen corresponding path program 1 times [2022-07-19 12:08:25,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:25,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334892253] [2022-07-19 12:08:25,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:25,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:26,084 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:08:26,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:26,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334892253] [2022-07-19 12:08:26,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334892253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:26,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:26,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:08:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865255864] [2022-07-19 12:08:26,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:26,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:26,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:26,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:26,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:26,088 INFO L87 Difference]: Start difference. First operand 1506 states and 2466 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:29,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:29,293 INFO L93 Difference]: Finished difference Result 4512 states and 7393 transitions. [2022-07-19 12:08:29,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:08:29,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-07-19 12:08:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:29,309 INFO L225 Difference]: With dead ends: 4512 [2022-07-19 12:08:29,309 INFO L226 Difference]: Without dead ends: 3008 [2022-07-19 12:08:29,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:29,319 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 753 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 681 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:29,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1157 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [681 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 12:08:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2022-07-19 12:08:29,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 3008. [2022-07-19 12:08:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3008 states, 3007 states have (on average 1.537080146325241) internal successors, (4622), 3007 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:29,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 4622 transitions. [2022-07-19 12:08:29,397 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 4622 transitions. Word has length 86 [2022-07-19 12:08:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:29,400 INFO L495 AbstractCegarLoop]: Abstraction has 3008 states and 4622 transitions. [2022-07-19 12:08:29,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:29,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 4622 transitions. [2022-07-19 12:08:29,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-19 12:08:29,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:29,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:08:29,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 12:08:29,412 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:29,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:29,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1990984141, now seen corresponding path program 1 times [2022-07-19 12:08:29,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:29,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230646402] [2022-07-19 12:08:29,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:29,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:08:29,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:29,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230646402] [2022-07-19 12:08:29,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230646402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:29,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:29,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:08:29,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904173856] [2022-07-19 12:08:29,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:29,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:29,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:29,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:29,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:29,525 INFO L87 Difference]: Start difference. First operand 3008 states and 4622 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:32,340 INFO L93 Difference]: Finished difference Result 9018 states and 13861 transitions. [2022-07-19 12:08:32,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:08:32,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-07-19 12:08:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:32,364 INFO L225 Difference]: With dead ends: 9018 [2022-07-19 12:08:32,364 INFO L226 Difference]: Without dead ends: 6012 [2022-07-19 12:08:32,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:32,371 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 775 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:32,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 447 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 12:08:32,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2022-07-19 12:08:32,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 6012. [2022-07-19 12:08:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6012 states, 6011 states have (on average 1.3726501414074197) internal successors, (8251), 6011 states have internal predecessors, (8251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6012 states to 6012 states and 8251 transitions. [2022-07-19 12:08:32,488 INFO L78 Accepts]: Start accepts. Automaton has 6012 states and 8251 transitions. Word has length 89 [2022-07-19 12:08:32,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:32,488 INFO L495 AbstractCegarLoop]: Abstraction has 6012 states and 8251 transitions. [2022-07-19 12:08:32,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:32,489 INFO L276 IsEmpty]: Start isEmpty. Operand 6012 states and 8251 transitions. [2022-07-19 12:08:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 12:08:32,490 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:32,490 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 12:08:32,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 12:08:32,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:32,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1407375044, now seen corresponding path program 1 times [2022-07-19 12:08:32,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:32,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196387863] [2022-07-19 12:08:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:32,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:08:32,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:32,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196387863] [2022-07-19 12:08:32,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196387863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:32,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:32,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:08:32,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876472219] [2022-07-19 12:08:32,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:32,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 12:08:32,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 12:08:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 12:08:32,648 INFO L87 Difference]: Start difference. First operand 6012 states and 8251 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:37,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:37,833 INFO L93 Difference]: Finished difference Result 16528 states and 22713 transitions. [2022-07-19 12:08:37,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 12:08:37,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-07-19 12:08:37,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:37,875 INFO L225 Difference]: With dead ends: 16528 [2022-07-19 12:08:37,875 INFO L226 Difference]: Without dead ends: 10518 [2022-07-19 12:08:37,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-19 12:08:37,888 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 4360 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5301 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4360 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 6274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 5301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:37,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4360 Valid, 684 Invalid, 6274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [973 Valid, 5301 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-19 12:08:37,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10518 states. [2022-07-19 12:08:38,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10518 to 9767. [2022-07-19 12:08:38,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9767 states, 9766 states have (on average 1.2520991193938154) internal successors, (12228), 9766 states have internal predecessors, (12228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9767 states to 9767 states and 12228 transitions. [2022-07-19 12:08:38,091 INFO L78 Accepts]: Start accepts. Automaton has 9767 states and 12228 transitions. Word has length 96 [2022-07-19 12:08:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:38,092 INFO L495 AbstractCegarLoop]: Abstraction has 9767 states and 12228 transitions. [2022-07-19 12:08:38,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:38,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9767 states and 12228 transitions. [2022-07-19 12:08:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-19 12:08:38,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:38,100 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:08:38,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 12:08:38,100 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:38,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2043288918, now seen corresponding path program 1 times [2022-07-19 12:08:38,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:38,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034701242] [2022-07-19 12:08:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:38,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:38,274 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:08:38,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:38,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034701242] [2022-07-19 12:08:38,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034701242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:38,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:38,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:08:38,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971495137] [2022-07-19 12:08:38,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:38,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:08:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:38,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:08:38,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:08:38,279 INFO L87 Difference]: Start difference. First operand 9767 states and 12228 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:41,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:41,518 INFO L93 Difference]: Finished difference Result 27081 states and 34206 transitions. [2022-07-19 12:08:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:08:41,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 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 167 [2022-07-19 12:08:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:41,568 INFO L225 Difference]: With dead ends: 27081 [2022-07-19 12:08:41,568 INFO L226 Difference]: Without dead ends: 17279 [2022-07-19 12:08:41,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:08:41,586 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 706 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 3109 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 706 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 3837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 3109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:41,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [706 Valid, 710 Invalid, 3837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [728 Valid, 3109 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 12:08:41,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17279 states. [2022-07-19 12:08:41,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17279 to 15775. [2022-07-19 12:08:41,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15775 states, 15774 states have (on average 1.1640674527703816) internal successors, (18362), 15774 states have internal predecessors, (18362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15775 states to 15775 states and 18362 transitions. [2022-07-19 12:08:41,878 INFO L78 Accepts]: Start accepts. Automaton has 15775 states and 18362 transitions. Word has length 167 [2022-07-19 12:08:41,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:41,879 INFO L495 AbstractCegarLoop]: Abstraction has 15775 states and 18362 transitions. [2022-07-19 12:08:41,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 15775 states and 18362 transitions. [2022-07-19 12:08:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2022-07-19 12:08:41,885 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:41,885 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:08:41,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 12:08:41,885 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:41,886 INFO L85 PathProgramCache]: Analyzing trace with hash -358179269, now seen corresponding path program 1 times [2022-07-19 12:08:41,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:41,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88130010] [2022-07-19 12:08:41,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:41,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-19 12:08:42,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:42,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88130010] [2022-07-19 12:08:42,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88130010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:42,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:42,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:08:42,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693819939] [2022-07-19 12:08:42,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:42,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:42,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:42,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:42,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:42,091 INFO L87 Difference]: Start difference. First operand 15775 states and 18362 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:44,756 INFO L93 Difference]: Finished difference Result 39811 states and 47231 transitions. [2022-07-19 12:08:44,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:08:44,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 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 237 [2022-07-19 12:08:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:44,812 INFO L225 Difference]: With dead ends: 39811 [2022-07-19 12:08:44,812 INFO L226 Difference]: Without dead ends: 24038 [2022-07-19 12:08:44,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:44,834 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 848 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 2775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:44,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 310 Invalid, 2775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:08:44,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24038 states. [2022-07-19 12:08:45,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24038 to 23285. [2022-07-19 12:08:45,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23285 states, 23284 states have (on average 1.1568459027658478) internal successors, (26936), 23284 states have internal predecessors, (26936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23285 states to 23285 states and 26936 transitions. [2022-07-19 12:08:45,203 INFO L78 Accepts]: Start accepts. Automaton has 23285 states and 26936 transitions. Word has length 237 [2022-07-19 12:08:45,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:45,204 INFO L495 AbstractCegarLoop]: Abstraction has 23285 states and 26936 transitions. [2022-07-19 12:08:45,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 2 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:45,204 INFO L276 IsEmpty]: Start isEmpty. Operand 23285 states and 26936 transitions. [2022-07-19 12:08:45,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-19 12:08:45,207 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:45,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:08:45,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 12:08:45,207 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash -999996468, now seen corresponding path program 1 times [2022-07-19 12:08:45,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:45,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815979040] [2022-07-19 12:08:45,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:45,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:08:45,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:45,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815979040] [2022-07-19 12:08:45,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815979040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:45,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:45,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:08:45,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50836629] [2022-07-19 12:08:45,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:45,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:45,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:45,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:45,333 INFO L87 Difference]: Start difference. First operand 23285 states and 26936 transitions. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:48,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:48,422 INFO L93 Difference]: Finished difference Result 60086 states and 69678 transitions. [2022-07-19 12:08:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:08:48,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2022-07-19 12:08:48,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:48,483 INFO L225 Difference]: With dead ends: 60086 [2022-07-19 12:08:48,483 INFO L226 Difference]: Without dead ends: 36803 [2022-07-19 12:08:48,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:48,514 INFO L413 NwaCegarLoop]: 1317 mSDtfsCounter, 676 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 3066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:48,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 1325 Invalid, 3066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 12:08:48,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36803 states. [2022-07-19 12:08:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36803 to 33799. [2022-07-19 12:08:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33799 states, 33798 states have (on average 1.1530563938694598) internal successors, (38971), 33798 states have internal predecessors, (38971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:48,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33799 states to 33799 states and 38971 transitions. [2022-07-19 12:08:48,970 INFO L78 Accepts]: Start accepts. Automaton has 33799 states and 38971 transitions. Word has length 242 [2022-07-19 12:08:48,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:48,971 INFO L495 AbstractCegarLoop]: Abstraction has 33799 states and 38971 transitions. [2022-07-19 12:08:48,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:48,972 INFO L276 IsEmpty]: Start isEmpty. Operand 33799 states and 38971 transitions. [2022-07-19 12:08:48,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-19 12:08:48,976 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:48,976 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:08:48,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 12:08:48,976 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:48,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:49,073 INFO L85 PathProgramCache]: Analyzing trace with hash -400405687, now seen corresponding path program 1 times [2022-07-19 12:08:49,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:49,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132600711] [2022-07-19 12:08:49,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:49,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-19 12:08:49,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:49,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132600711] [2022-07-19 12:08:49,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132600711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:49,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:49,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:08:49,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736847677] [2022-07-19 12:08:49,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:49,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:49,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:49,251 INFO L87 Difference]: Start difference. First operand 33799 states and 38971 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:51,883 INFO L93 Difference]: Finished difference Result 78861 states and 90211 transitions. [2022-07-19 12:08:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:08:51,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 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 292 [2022-07-19 12:08:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:51,948 INFO L225 Difference]: With dead ends: 78861 [2022-07-19 12:08:51,949 INFO L226 Difference]: Without dead ends: 45064 [2022-07-19 12:08:51,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:51,985 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 819 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 2754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:51,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 205 Invalid, 2754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:08:52,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45064 states. [2022-07-19 12:08:52,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45064 to 40558. [2022-07-19 12:08:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40558 states, 40557 states have (on average 1.1331459427472446) internal successors, (45957), 40557 states have internal predecessors, (45957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40558 states to 40558 states and 45957 transitions. [2022-07-19 12:08:52,722 INFO L78 Accepts]: Start accepts. Automaton has 40558 states and 45957 transitions. Word has length 292 [2022-07-19 12:08:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:52,723 INFO L495 AbstractCegarLoop]: Abstraction has 40558 states and 45957 transitions. [2022-07-19 12:08:52,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:52,723 INFO L276 IsEmpty]: Start isEmpty. Operand 40558 states and 45957 transitions. [2022-07-19 12:08:52,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-19 12:08:52,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:52,729 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:08:52,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 12:08:52,731 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:52,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:52,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2085073940, now seen corresponding path program 1 times [2022-07-19 12:08:52,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:52,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334929386] [2022-07-19 12:08:52,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:52,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:52,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:52,866 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 12:08:52,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:52,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334929386] [2022-07-19 12:08:52,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334929386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:52,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:52,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:08:52,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753863210] [2022-07-19 12:08:52,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:52,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:52,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:52,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:52,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:52,870 INFO L87 Difference]: Start difference. First operand 40558 states and 45957 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:55,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:55,445 INFO L93 Difference]: Finished difference Result 96134 states and 110249 transitions. [2022-07-19 12:08:55,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:08:55,446 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 314 [2022-07-19 12:08:55,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:08:55,533 INFO L225 Difference]: With dead ends: 96134 [2022-07-19 12:08:55,534 INFO L226 Difference]: Without dead ends: 55578 [2022-07-19 12:08:55,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:55,583 INFO L413 NwaCegarLoop]: 1208 mSDtfsCounter, 704 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 12:08:55,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1216 Invalid, 2693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 12:08:55,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55578 states. [2022-07-19 12:08:56,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55578 to 55578. [2022-07-19 12:08:56,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55578 states, 55577 states have (on average 1.1162351332385698) internal successors, (62037), 55577 states have internal predecessors, (62037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:56,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55578 states to 55578 states and 62037 transitions. [2022-07-19 12:08:56,597 INFO L78 Accepts]: Start accepts. Automaton has 55578 states and 62037 transitions. Word has length 314 [2022-07-19 12:08:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:08:56,597 INFO L495 AbstractCegarLoop]: Abstraction has 55578 states and 62037 transitions. [2022-07-19 12:08:56,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 55578 states and 62037 transitions. [2022-07-19 12:08:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2022-07-19 12:08:56,605 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:08:56,605 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:08:56,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 12:08:56,606 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:08:56,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:08:56,606 INFO L85 PathProgramCache]: Analyzing trace with hash 314874820, now seen corresponding path program 1 times [2022-07-19 12:08:56,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:08:56,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717243064] [2022-07-19 12:08:56,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:08:56,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:08:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:08:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2022-07-19 12:08:56,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:08:56,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717243064] [2022-07-19 12:08:56,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717243064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:08:56,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:08:56,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:08:56,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350504771] [2022-07-19 12:08:56,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:08:56,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:08:56,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:08:56,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:08:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:08:56,770 INFO L87 Difference]: Start difference. First operand 55578 states and 62037 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:08:59,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:08:59,903 INFO L93 Difference]: Finished difference Result 128427 states and 145272 transitions. [2022-07-19 12:08:59,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:08:59,903 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 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 346 [2022-07-19 12:08:59,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:00,002 INFO L225 Difference]: With dead ends: 128427 [2022-07-19 12:09:00,002 INFO L226 Difference]: Without dead ends: 69096 [2022-07-19 12:09:00,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:00,038 INFO L413 NwaCegarLoop]: 1307 mSDtfsCounter, 778 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2234 mSolverCounterSat, 620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1315 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 620 IncrementalHoareTripleChecker+Valid, 2234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:00,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1315 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [620 Valid, 2234 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:09:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69096 states. [2022-07-19 12:09:00,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69096 to 67594. [2022-07-19 12:09:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67594 states, 67593 states have (on average 1.107318805201722) internal successors, (74847), 67593 states have internal predecessors, (74847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:00,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67594 states to 67594 states and 74847 transitions. [2022-07-19 12:09:00,910 INFO L78 Accepts]: Start accepts. Automaton has 67594 states and 74847 transitions. Word has length 346 [2022-07-19 12:09:00,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:00,910 INFO L495 AbstractCegarLoop]: Abstraction has 67594 states and 74847 transitions. [2022-07-19 12:09:00,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:00,911 INFO L276 IsEmpty]: Start isEmpty. Operand 67594 states and 74847 transitions. [2022-07-19 12:09:00,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2022-07-19 12:09:00,920 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:00,920 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:00,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 12:09:00,921 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:00,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:00,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2050413354, now seen corresponding path program 1 times [2022-07-19 12:09:00,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:00,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516018071] [2022-07-19 12:09:00,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:00,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:01,079 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 255 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-19 12:09:01,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:01,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516018071] [2022-07-19 12:09:01,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516018071] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:01,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:01,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:01,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36857084] [2022-07-19 12:09:01,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:01,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:01,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:01,082 INFO L87 Difference]: Start difference. First operand 67594 states and 74847 transitions. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:04,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:04,331 INFO L93 Difference]: Finished difference Result 135186 states and 149692 transitions. [2022-07-19 12:09:04,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 409 [2022-07-19 12:09:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:04,415 INFO L225 Difference]: With dead ends: 135186 [2022-07-19 12:09:04,416 INFO L226 Difference]: Without dead ends: 67594 [2022-07-19 12:09:04,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:04,450 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 684 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2417 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 2908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:04,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 219 Invalid, 2908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2417 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 12:09:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67594 states. [2022-07-19 12:09:05,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67594 to 67594. [2022-07-19 12:09:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67594 states, 67593 states have (on average 1.1030284201026734) internal successors, (74557), 67593 states have internal predecessors, (74557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:05,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67594 states to 67594 states and 74557 transitions. [2022-07-19 12:09:05,324 INFO L78 Accepts]: Start accepts. Automaton has 67594 states and 74557 transitions. Word has length 409 [2022-07-19 12:09:05,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:05,325 INFO L495 AbstractCegarLoop]: Abstraction has 67594 states and 74557 transitions. [2022-07-19 12:09:05,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand 67594 states and 74557 transitions. [2022-07-19 12:09:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2022-07-19 12:09:05,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:05,348 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:05,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 12:09:05,349 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:05,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1353959124, now seen corresponding path program 1 times [2022-07-19 12:09:05,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:05,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242558633] [2022-07-19 12:09:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:05,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 424 proven. 229 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 12:09:05,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:05,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242558633] [2022-07-19 12:09:05,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242558633] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:09:05,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317515866] [2022-07-19 12:09:05,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:05,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:09:05,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:09:05,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:09:05,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 12:09:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:05,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:09:05,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:09:06,190 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 353 proven. 0 refuted. 0 times theorem prover too weak. 313 trivial. 0 not checked. [2022-07-19 12:09:06,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:09:06,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317515866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:06,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:09:06,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-19 12:09:06,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082373812] [2022-07-19 12:09:06,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:06,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:06,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:06,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:06,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:09:06,206 INFO L87 Difference]: Start difference. First operand 67594 states and 74557 transitions. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:09,378 INFO L93 Difference]: Finished difference Result 150957 states and 168521 transitions. [2022-07-19 12:09:09,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:09,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 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 517 [2022-07-19 12:09:09,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:09,480 INFO L225 Difference]: With dead ends: 150957 [2022-07-19 12:09:09,480 INFO L226 Difference]: Without dead ends: 83365 [2022-07-19 12:09:09,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:09:09,498 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 645 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2142 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 2142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:09,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1397 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 2142 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 12:09:09,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83365 states. [2022-07-19 12:09:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83365 to 79610. [2022-07-19 12:09:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79610 states, 79609 states have (on average 1.0953284176412215) internal successors, (87198), 79609 states have internal predecessors, (87198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:10,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79610 states to 79610 states and 87198 transitions. [2022-07-19 12:09:10,441 INFO L78 Accepts]: Start accepts. Automaton has 79610 states and 87198 transitions. Word has length 517 [2022-07-19 12:09:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:10,442 INFO L495 AbstractCegarLoop]: Abstraction has 79610 states and 87198 transitions. [2022-07-19 12:09:10,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:10,442 INFO L276 IsEmpty]: Start isEmpty. Operand 79610 states and 87198 transitions. [2022-07-19 12:09:10,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2022-07-19 12:09:10,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:10,462 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:10,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 12:09:10,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 12:09:10,687 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:10,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1858215506, now seen corresponding path program 1 times [2022-07-19 12:09:10,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:10,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941048261] [2022-07-19 12:09:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:10,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 529 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-07-19 12:09:11,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:11,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941048261] [2022-07-19 12:09:11,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941048261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:11,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:11,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:11,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437736299] [2022-07-19 12:09:11,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:11,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:11,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:11,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:11,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:11,126 INFO L87 Difference]: Start difference. First operand 79610 states and 87198 transitions. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:13,946 INFO L93 Difference]: Finished difference Result 161471 states and 176728 transitions. [2022-07-19 12:09:13,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:13,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 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 545 [2022-07-19 12:09:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:14,038 INFO L225 Difference]: With dead ends: 161471 [2022-07-19 12:09:14,038 INFO L226 Difference]: Without dead ends: 82614 [2022-07-19 12:09:14,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:14,076 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 686 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 2687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:14,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1179 Invalid, 2687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-19 12:09:14,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82614 states. [2022-07-19 12:09:14,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82614 to 79610. [2022-07-19 12:09:14,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79610 states, 79609 states have (on average 1.0623798816716703) internal successors, (84575), 79609 states have internal predecessors, (84575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79610 states to 79610 states and 84575 transitions. [2022-07-19 12:09:15,084 INFO L78 Accepts]: Start accepts. Automaton has 79610 states and 84575 transitions. Word has length 545 [2022-07-19 12:09:15,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:15,084 INFO L495 AbstractCegarLoop]: Abstraction has 79610 states and 84575 transitions. [2022-07-19 12:09:15,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:15,085 INFO L276 IsEmpty]: Start isEmpty. Operand 79610 states and 84575 transitions. [2022-07-19 12:09:15,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2022-07-19 12:09:15,101 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:15,102 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:15,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 12:09:15,102 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:15,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:15,103 INFO L85 PathProgramCache]: Analyzing trace with hash 73847232, now seen corresponding path program 1 times [2022-07-19 12:09:15,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:15,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592382804] [2022-07-19 12:09:15,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:15,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:15,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2022-07-19 12:09:15,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:15,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592382804] [2022-07-19 12:09:15,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592382804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:15,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:15,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:15,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321700358] [2022-07-19 12:09:15,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:15,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:15,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:15,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:15,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:15,346 INFO L87 Difference]: Start difference. First operand 79610 states and 84575 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:18,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:18,758 INFO L93 Difference]: Finished difference Result 199772 states and 212820 transitions. [2022-07-19 12:09:18,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:18,759 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 593 [2022-07-19 12:09:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:18,916 INFO L225 Difference]: With dead ends: 199772 [2022-07-19 12:09:18,916 INFO L226 Difference]: Without dead ends: 120915 [2022-07-19 12:09:18,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:18,956 INFO L413 NwaCegarLoop]: 1302 mSDtfsCounter, 750 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2340 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 2837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 2340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:18,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1310 Invalid, 2837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 2340 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 12:09:19,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120915 states. [2022-07-19 12:09:20,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120915 to 112654. [2022-07-19 12:09:20,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112654 states, 112653 states have (on average 1.055071769060744) internal successors, (118857), 112653 states have internal predecessors, (118857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112654 states to 112654 states and 118857 transitions. [2022-07-19 12:09:20,422 INFO L78 Accepts]: Start accepts. Automaton has 112654 states and 118857 transitions. Word has length 593 [2022-07-19 12:09:20,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:20,423 INFO L495 AbstractCegarLoop]: Abstraction has 112654 states and 118857 transitions. [2022-07-19 12:09:20,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:20,423 INFO L276 IsEmpty]: Start isEmpty. Operand 112654 states and 118857 transitions. [2022-07-19 12:09:20,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2022-07-19 12:09:20,451 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:20,451 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:20,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 12:09:20,451 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash 256922568, now seen corresponding path program 1 times [2022-07-19 12:09:20,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:20,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257075118] [2022-07-19 12:09:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:20,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:20,802 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-19 12:09:20,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:20,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257075118] [2022-07-19 12:09:20,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257075118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:20,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:20,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:20,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547018341] [2022-07-19 12:09:20,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:20,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:20,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:20,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:20,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:20,807 INFO L87 Difference]: Start difference. First operand 112654 states and 118857 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:24,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:24,838 INFO L93 Difference]: Finished difference Result 272619 states and 289015 transitions. [2022-07-19 12:09:24,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:24,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 700 [2022-07-19 12:09:24,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:25,057 INFO L225 Difference]: With dead ends: 272619 [2022-07-19 12:09:25,058 INFO L226 Difference]: Without dead ends: 160718 [2022-07-19 12:09:25,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:25,122 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 796 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2520 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 3013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 2520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:25,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 1188 Invalid, 3013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 2520 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 12:09:25,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160718 states. [2022-07-19 12:09:26,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160718 to 159967. [2022-07-19 12:09:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159967 states, 159966 states have (on average 1.0608066714176763) internal successors, (169693), 159966 states have internal predecessors, (169693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:27,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159967 states to 159967 states and 169693 transitions. [2022-07-19 12:09:27,185 INFO L78 Accepts]: Start accepts. Automaton has 159967 states and 169693 transitions. Word has length 700 [2022-07-19 12:09:27,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:27,186 INFO L495 AbstractCegarLoop]: Abstraction has 159967 states and 169693 transitions. [2022-07-19 12:09:27,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:27,186 INFO L276 IsEmpty]: Start isEmpty. Operand 159967 states and 169693 transitions. [2022-07-19 12:09:27,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 704 [2022-07-19 12:09:27,219 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:27,219 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:27,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 12:09:27,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:27,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash 815505428, now seen corresponding path program 1 times [2022-07-19 12:09:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:27,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739235510] [2022-07-19 12:09:27,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:27,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 624 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-19 12:09:27,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:27,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739235510] [2022-07-19 12:09:27,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739235510] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:27,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:27,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:27,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593731286] [2022-07-19 12:09:27,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:27,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:27,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:27,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:27,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:27,479 INFO L87 Difference]: Start difference. First operand 159967 states and 169693 transitions. Second operand has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:31,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:31,459 INFO L93 Difference]: Finished difference Result 340960 states and 361047 transitions. [2022-07-19 12:09:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:31,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 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 703 [2022-07-19 12:09:31,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:31,708 INFO L225 Difference]: With dead ends: 340960 [2022-07-19 12:09:31,708 INFO L226 Difference]: Without dead ends: 181746 [2022-07-19 12:09:31,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:31,793 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 663 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 2896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:31,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 233 Invalid, 2896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 12:09:31,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181746 states. [2022-07-19 12:09:33,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181746 to 156963. [2022-07-19 12:09:33,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156963 states, 156962 states have (on average 1.0590333966182899) internal successors, (166228), 156962 states have internal predecessors, (166228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:33,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156963 states to 156963 states and 166228 transitions. [2022-07-19 12:09:33,965 INFO L78 Accepts]: Start accepts. Automaton has 156963 states and 166228 transitions. Word has length 703 [2022-07-19 12:09:33,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:33,965 INFO L495 AbstractCegarLoop]: Abstraction has 156963 states and 166228 transitions. [2022-07-19 12:09:33,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.66666666666666) internal successors, (614), 3 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:33,966 INFO L276 IsEmpty]: Start isEmpty. Operand 156963 states and 166228 transitions. [2022-07-19 12:09:34,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2022-07-19 12:09:34,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:34,005 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:34,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 12:09:34,005 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:34,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:34,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1945228874, now seen corresponding path program 1 times [2022-07-19 12:09:34,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:34,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569438988] [2022-07-19 12:09:34,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:34,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:34,240 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 640 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-07-19 12:09:34,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:34,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569438988] [2022-07-19 12:09:34,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569438988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:34,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:34,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:09:34,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672827043] [2022-07-19 12:09:34,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:34,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:34,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:34,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:34,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:34,243 INFO L87 Difference]: Start difference. First operand 156963 states and 166228 transitions. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:37,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:37,893 INFO L93 Difference]: Finished difference Result 317679 states and 336288 transitions. [2022-07-19 12:09:37,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:37,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 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 731 [2022-07-19 12:09:37,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:38,132 INFO L225 Difference]: With dead ends: 317679 [2022-07-19 12:09:38,132 INFO L226 Difference]: Without dead ends: 161469 [2022-07-19 12:09:38,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:09:38,214 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 803 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:38,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 909 Invalid, 2646 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [518 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 12:09:38,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161469 states. [2022-07-19 12:09:39,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161469 to 148702. [2022-07-19 12:09:39,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148702 states, 148701 states have (on average 1.052481153455592) internal successors, (156505), 148701 states have internal predecessors, (156505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148702 states to 148702 states and 156505 transitions. [2022-07-19 12:09:40,428 INFO L78 Accepts]: Start accepts. Automaton has 148702 states and 156505 transitions. Word has length 731 [2022-07-19 12:09:40,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:40,428 INFO L495 AbstractCegarLoop]: Abstraction has 148702 states and 156505 transitions. [2022-07-19 12:09:40,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 148702 states and 156505 transitions. [2022-07-19 12:09:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2022-07-19 12:09:40,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:40,480 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:40,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 12:09:40,481 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1176686982, now seen corresponding path program 1 times [2022-07-19 12:09:40,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:40,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420867448] [2022-07-19 12:09:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:40,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:40,853 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 573 proven. 159 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-19 12:09:40,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:40,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420867448] [2022-07-19 12:09:40,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420867448] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:09:40,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146446461] [2022-07-19 12:09:40,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:40,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:09:40,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:09:40,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:09:40,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 12:09:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:41,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:09:41,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:09:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2022-07-19 12:09:41,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:09:41,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146446461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:41,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:09:41,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-07-19 12:09:41,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335975753] [2022-07-19 12:09:41,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:41,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:09:41,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:41,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:09:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:09:41,216 INFO L87 Difference]: Start difference. First operand 148702 states and 156505 transitions. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:44,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:44,543 INFO L93 Difference]: Finished difference Result 319181 states and 336245 transitions. [2022-07-19 12:09:44,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:09:44,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 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 811 [2022-07-19 12:09:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:44,771 INFO L225 Difference]: With dead ends: 319181 [2022-07-19 12:09:44,771 INFO L226 Difference]: Without dead ends: 171232 [2022-07-19 12:09:44,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 811 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-19 12:09:44,852 INFO L413 NwaCegarLoop]: 1118 mSDtfsCounter, 857 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:44,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 1126 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-19 12:09:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171232 states. [2022-07-19 12:09:46,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171232 to 168979. [2022-07-19 12:09:46,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168979 states, 168978 states have (on average 1.0485092733965369) internal successors, (177175), 168978 states have internal predecessors, (177175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:47,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168979 states to 168979 states and 177175 transitions. [2022-07-19 12:09:47,039 INFO L78 Accepts]: Start accepts. Automaton has 168979 states and 177175 transitions. Word has length 811 [2022-07-19 12:09:47,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:47,040 INFO L495 AbstractCegarLoop]: Abstraction has 168979 states and 177175 transitions. [2022-07-19 12:09:47,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 168979 states and 177175 transitions. [2022-07-19 12:09:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2022-07-19 12:09:47,095 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:47,096 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:47,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 12:09:47,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 12:09:47,297 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:47,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash 122519266, now seen corresponding path program 1 times [2022-07-19 12:09:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:47,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633907230] [2022-07-19 12:09:47,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:09:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:09:48,209 INFO L134 CoverageAnalysis]: Checked inductivity of 862 backedges. 849 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 12:09:48,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:09:48,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633907230] [2022-07-19 12:09:48,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633907230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:09:48,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:09:48,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 12:09:48,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370929225] [2022-07-19 12:09:48,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:09:48,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 12:09:48,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:09:48,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 12:09:48,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-19 12:09:48,212 INFO L87 Difference]: Start difference. First operand 168979 states and 177175 transitions. Second operand has 6 states, 6 states have (on average 161.16666666666666) internal successors, (967), 5 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:09:55,165 INFO L93 Difference]: Finished difference Result 353333 states and 370356 transitions. [2022-07-19 12:09:55,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 12:09:55,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 161.16666666666666) internal successors, (967), 5 states have internal predecessors, (967), 0 states have call successors, (0), 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 979 [2022-07-19 12:09:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:09:55,399 INFO L225 Difference]: With dead ends: 353333 [2022-07-19 12:09:55,399 INFO L226 Difference]: Without dead ends: 185107 [2022-07-19 12:09:55,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-19 12:09:55,486 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2512 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 7384 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 8212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 7384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:09:55,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2512 Valid, 535 Invalid, 8212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 7384 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-19 12:09:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185107 states. [2022-07-19 12:09:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185107 to 170481. [2022-07-19 12:09:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170481 states, 170480 states have (on average 1.0481874706710466) internal successors, (178695), 170480 states have internal predecessors, (178695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170481 states to 170481 states and 178695 transitions. [2022-07-19 12:09:57,973 INFO L78 Accepts]: Start accepts. Automaton has 170481 states and 178695 transitions. Word has length 979 [2022-07-19 12:09:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:09:57,973 INFO L495 AbstractCegarLoop]: Abstraction has 170481 states and 178695 transitions. [2022-07-19 12:09:57,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.16666666666666) internal successors, (967), 5 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 12:09:57,973 INFO L276 IsEmpty]: Start isEmpty. Operand 170481 states and 178695 transitions. [2022-07-19 12:09:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2022-07-19 12:09:58,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:09:58,027 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:09:58,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 12:09:58,027 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:09:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:09:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1650759820, now seen corresponding path program 1 times [2022-07-19 12:09:58,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:09:58,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119613673] [2022-07-19 12:09:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:09:58,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms