/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:08:51,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:08:51,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:08:51,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:08:51,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:08:51,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:08:51,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:08:51,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:08:51,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:08:51,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:08:51,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:08:51,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:08:51,250 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:08:51,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:08:51,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:08:51,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:08:51,258 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:08:51,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:08:51,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:08:51,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:08:51,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:08:51,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:08:51,291 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:08:51,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:08:51,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:08:51,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:08:51,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:08:51,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:08:51,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:08:51,312 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:08:51,312 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:08:51,313 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:08:51,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:08:51,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:08:51,314 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:08:51,315 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:08:51,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:08:51,367 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:08:51,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:08:51,371 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:08:51,371 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:08:51,371 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:08:51,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:08:51,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:08:51,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:08:51,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:08:51,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:08:51,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:08:51,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:08:51,374 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:08:51,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:08:51,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:08:51,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:08:51,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:08:51,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:08:51,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:08:51,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:08:51,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:08:51,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:08:51,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:08:51,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:08:51,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:08:51,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:08:51,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:08:51,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:08:51,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:08:51,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:08:51,808 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:08:51,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:08:51,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/822648a14/e19fccf966094b4e842f379f5da78719/FLAG7a3ccaa2a [2020-12-22 09:08:52,593 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:08:52,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:08:52,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/822648a14/e19fccf966094b4e842f379f5da78719/FLAG7a3ccaa2a [2020-12-22 09:08:52,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/822648a14/e19fccf966094b4e842f379f5da78719 [2020-12-22 09:08:52,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:08:52,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:08:52,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:08:52,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:08:52,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:08:52,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:08:52" (1/1) ... [2020-12-22 09:08:52,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35360407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:52, skipping insertion in model container [2020-12-22 09:08:52,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:08:52" (1/1) ... [2020-12-22 09:08:52,924 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:08:53,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:08:53,296 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13422,13435] [2020-12-22 09:08:53,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:08:53,405 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:08:53,506 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13422,13435] [2020-12-22 09:08:53,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:08:53,641 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:08:53,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53 WrapperNode [2020-12-22 09:08:53,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:08:53,643 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:08:53,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:08:53,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:08:53,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... [2020-12-22 09:08:53,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... [2020-12-22 09:08:53,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:08:53,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:08:53,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:08:53,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:08:53,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... [2020-12-22 09:08:53,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... [2020-12-22 09:08:53,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... [2020-12-22 09:08:53,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... [2020-12-22 09:08:53,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... [2020-12-22 09:08:53,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... [2020-12-22 09:08:53,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... [2020-12-22 09:08:53,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:08:53,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:08:53,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:08:53,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:08:53,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:08:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:08:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:08:53,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:08:53,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:08:55,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:08:55,447 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:08:55,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:08:55 BoogieIcfgContainer [2020-12-22 09:08:55,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:08:55,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:08:55,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:08:55,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:08:55,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:08:52" (1/3) ... [2020-12-22 09:08:55,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6dea9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:08:55, skipping insertion in model container [2020-12-22 09:08:55,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:08:53" (2/3) ... [2020-12-22 09:08:55,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6dea9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:08:55, skipping insertion in model container [2020-12-22 09:08:55,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:08:55" (3/3) ... [2020-12-22 09:08:55,460 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:08:55,467 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:08:55,472 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:08:55,493 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:08:55,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:08:55,527 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:08:55,527 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:08:55,527 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:08:55,528 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:08:55,528 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:08:55,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:08:55,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:08:55,564 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states. [2020-12-22 09:08:55,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 09:08:55,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:55,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:55,590 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:55,598 INFO L82 PathProgramCache]: Analyzing trace with hash 687624892, now seen corresponding path program 1 times [2020-12-22 09:08:55,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:55,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861250963] [2020-12-22 09:08:55,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:55,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:56,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861250963] [2020-12-22 09:08:56,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:56,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:56,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8229715] [2020-12-22 09:08:56,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:56,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:56,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:56,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:56,313 INFO L87 Difference]: Start difference. First operand 350 states. Second operand 3 states. [2020-12-22 09:08:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:56,469 INFO L93 Difference]: Finished difference Result 652 states and 1124 transitions. [2020-12-22 09:08:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:56,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 09:08:56,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:56,493 INFO L225 Difference]: With dead ends: 652 [2020-12-22 09:08:56,493 INFO L226 Difference]: Without dead ends: 489 [2020-12-22 09:08:56,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:56,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-12-22 09:08:56,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2020-12-22 09:08:56,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-12-22 09:08:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 801 transitions. [2020-12-22 09:08:56,592 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 801 transitions. Word has length 118 [2020-12-22 09:08:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:56,593 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 801 transitions. [2020-12-22 09:08:56,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:56,593 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 801 transitions. [2020-12-22 09:08:56,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 09:08:56,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:56,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:56,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:08:56,602 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:56,603 INFO L82 PathProgramCache]: Analyzing trace with hash 787881554, now seen corresponding path program 1 times [2020-12-22 09:08:56,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:56,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137810596] [2020-12-22 09:08:56,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:56,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137810596] [2020-12-22 09:08:56,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:56,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:56,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37287010] [2020-12-22 09:08:56,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:56,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:56,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:56,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:56,881 INFO L87 Difference]: Start difference. First operand 486 states and 801 transitions. Second operand 3 states. [2020-12-22 09:08:56,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:56,971 INFO L93 Difference]: Finished difference Result 1052 states and 1741 transitions. [2020-12-22 09:08:56,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:56,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-22 09:08:56,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:56,980 INFO L225 Difference]: With dead ends: 1052 [2020-12-22 09:08:56,981 INFO L226 Difference]: Without dead ends: 759 [2020-12-22 09:08:56,987 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-12-22 09:08:57,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 755. [2020-12-22 09:08:57,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-12-22 09:08:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1246 transitions. [2020-12-22 09:08:57,060 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1246 transitions. Word has length 121 [2020-12-22 09:08:57,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:57,063 INFO L481 AbstractCegarLoop]: Abstraction has 755 states and 1246 transitions. [2020-12-22 09:08:57,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:57,063 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1246 transitions. [2020-12-22 09:08:57,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 09:08:57,076 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:57,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:57,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:08:57,077 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:57,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:57,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1106896185, now seen corresponding path program 1 times [2020-12-22 09:08:57,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:57,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824350735] [2020-12-22 09:08:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:57,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:57,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:57,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824350735] [2020-12-22 09:08:57,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:57,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:57,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379363846] [2020-12-22 09:08:57,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:57,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:57,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:57,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:57,370 INFO L87 Difference]: Start difference. First operand 755 states and 1246 transitions. Second operand 3 states. [2020-12-22 09:08:57,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:57,452 INFO L93 Difference]: Finished difference Result 1839 states and 3040 transitions. [2020-12-22 09:08:57,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:57,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-22 09:08:57,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:57,464 INFO L225 Difference]: With dead ends: 1839 [2020-12-22 09:08:57,464 INFO L226 Difference]: Without dead ends: 1277 [2020-12-22 09:08:57,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:57,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-12-22 09:08:57,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1271. [2020-12-22 09:08:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-12-22 09:08:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2094 transitions. [2020-12-22 09:08:57,549 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2094 transitions. Word has length 124 [2020-12-22 09:08:57,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:57,558 INFO L481 AbstractCegarLoop]: Abstraction has 1271 states and 2094 transitions. [2020-12-22 09:08:57,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:57,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2094 transitions. [2020-12-22 09:08:57,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 09:08:57,561 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:57,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:57,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:08:57,563 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:57,564 INFO L82 PathProgramCache]: Analyzing trace with hash -854228413, now seen corresponding path program 1 times [2020-12-22 09:08:57,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:57,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55800444] [2020-12-22 09:08:57,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:57,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55800444] [2020-12-22 09:08:57,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:57,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:57,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937180358] [2020-12-22 09:08:57,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:57,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:57,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:57,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:57,769 INFO L87 Difference]: Start difference. First operand 1271 states and 2094 transitions. Second operand 3 states. [2020-12-22 09:08:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:57,885 INFO L93 Difference]: Finished difference Result 3347 states and 5512 transitions. [2020-12-22 09:08:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:57,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-22 09:08:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:57,899 INFO L225 Difference]: With dead ends: 3347 [2020-12-22 09:08:57,899 INFO L226 Difference]: Without dead ends: 2269 [2020-12-22 09:08:57,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:57,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-12-22 09:08:57,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2259. [2020-12-22 09:08:57,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2259 states. [2020-12-22 09:08:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3706 transitions. [2020-12-22 09:08:58,006 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3706 transitions. Word has length 127 [2020-12-22 09:08:58,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:58,007 INFO L481 AbstractCegarLoop]: Abstraction has 2259 states and 3706 transitions. [2020-12-22 09:08:58,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:58,007 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3706 transitions. [2020-12-22 09:08:58,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 09:08:58,010 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:58,010 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:58,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:08:58,010 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:58,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:58,011 INFO L82 PathProgramCache]: Analyzing trace with hash 996831134, now seen corresponding path program 1 times [2020-12-22 09:08:58,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:58,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465676610] [2020-12-22 09:08:58,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:58,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:58,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465676610] [2020-12-22 09:08:58,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:58,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:08:58,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808285242] [2020-12-22 09:08:58,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:08:58,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:58,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:08:58,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:08:58,337 INFO L87 Difference]: Start difference. First operand 2259 states and 3706 transitions. Second operand 6 states. [2020-12-22 09:08:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:59,360 INFO L93 Difference]: Finished difference Result 11839 states and 19570 transitions. [2020-12-22 09:08:59,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 09:08:59,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-12-22 09:08:59,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:59,412 INFO L225 Difference]: With dead ends: 11839 [2020-12-22 09:08:59,412 INFO L226 Difference]: Without dead ends: 9773 [2020-12-22 09:08:59,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:08:59,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9773 states. [2020-12-22 09:08:59,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9773 to 4189. [2020-12-22 09:08:59,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4189 states. [2020-12-22 09:08:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6873 transitions. [2020-12-22 09:08:59,795 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6873 transitions. Word has length 130 [2020-12-22 09:08:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:59,796 INFO L481 AbstractCegarLoop]: Abstraction has 4189 states and 6873 transitions. [2020-12-22 09:08:59,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:08:59,796 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6873 transitions. [2020-12-22 09:08:59,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 09:08:59,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:59,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:08:59,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:08:59,800 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:59,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:59,801 INFO L82 PathProgramCache]: Analyzing trace with hash 769932088, now seen corresponding path program 1 times [2020-12-22 09:08:59,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:59,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702679972] [2020-12-22 09:08:59,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:08:59,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702679972] [2020-12-22 09:08:59,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:59,902 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:08:59,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173923653] [2020-12-22 09:08:59,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:08:59,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:59,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:08:59,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:08:59,904 INFO L87 Difference]: Start difference. First operand 4189 states and 6873 transitions. Second operand 4 states. [2020-12-22 09:09:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:00,470 INFO L93 Difference]: Finished difference Result 12287 states and 20261 transitions. [2020-12-22 09:09:00,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:00,471 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 09:09:00,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:00,515 INFO L225 Difference]: With dead ends: 12287 [2020-12-22 09:09:00,515 INFO L226 Difference]: Without dead ends: 8291 [2020-12-22 09:09:00,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8291 states. [2020-12-22 09:09:00,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8291 to 6223. [2020-12-22 09:09:00,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-12-22 09:09:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 10226 transitions. [2020-12-22 09:09:01,021 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 10226 transitions. Word has length 131 [2020-12-22 09:09:01,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:01,022 INFO L481 AbstractCegarLoop]: Abstraction has 6223 states and 10226 transitions. [2020-12-22 09:09:01,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:09:01,022 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 10226 transitions. [2020-12-22 09:09:01,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 09:09:01,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:01,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:01,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:09:01,027 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:01,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:01,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1964413019, now seen corresponding path program 1 times [2020-12-22 09:09:01,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:01,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020100339] [2020-12-22 09:09:01,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:01,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:01,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020100339] [2020-12-22 09:09:01,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:01,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:09:01,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146398482] [2020-12-22 09:09:01,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:09:01,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:01,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:09:01,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:09:01,248 INFO L87 Difference]: Start difference. First operand 6223 states and 10226 transitions. Second operand 4 states. [2020-12-22 09:09:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:02,120 INFO L93 Difference]: Finished difference Result 18285 states and 30121 transitions. [2020-12-22 09:09:02,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:02,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-12-22 09:09:02,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:02,157 INFO L225 Difference]: With dead ends: 18285 [2020-12-22 09:09:02,157 INFO L226 Difference]: Without dead ends: 12255 [2020-12-22 09:09:02,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:02,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12255 states. [2020-12-22 09:09:02,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12255 to 9215. [2020-12-22 09:09:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9215 states. [2020-12-22 09:09:02,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9215 states to 9215 states and 15128 transitions. [2020-12-22 09:09:02,894 INFO L78 Accepts]: Start accepts. Automaton has 9215 states and 15128 transitions. Word has length 132 [2020-12-22 09:09:02,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:02,894 INFO L481 AbstractCegarLoop]: Abstraction has 9215 states and 15128 transitions. [2020-12-22 09:09:02,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:09:02,895 INFO L276 IsEmpty]: Start isEmpty. Operand 9215 states and 15128 transitions. [2020-12-22 09:09:02,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 09:09:02,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:02,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:02,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:09:02,900 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:02,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:02,901 INFO L82 PathProgramCache]: Analyzing trace with hash -825207393, now seen corresponding path program 1 times [2020-12-22 09:09:02,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:02,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608232482] [2020-12-22 09:09:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:03,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:03,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608232482] [2020-12-22 09:09:03,164 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:03,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:09:03,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987358200] [2020-12-22 09:09:03,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:09:03,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:03,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:09:03,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:09:03,167 INFO L87 Difference]: Start difference. First operand 9215 states and 15128 transitions. Second operand 4 states. [2020-12-22 09:09:04,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:04,304 INFO L93 Difference]: Finished difference Result 27109 states and 44609 transitions. [2020-12-22 09:09:04,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:04,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-12-22 09:09:04,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:04,352 INFO L225 Difference]: With dead ends: 27109 [2020-12-22 09:09:04,353 INFO L226 Difference]: Without dead ends: 18087 [2020-12-22 09:09:04,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18087 states. [2020-12-22 09:09:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18087 to 13617. [2020-12-22 09:09:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13617 states. [2020-12-22 09:09:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13617 states to 13617 states and 22332 transitions. [2020-12-22 09:09:05,333 INFO L78 Accepts]: Start accepts. Automaton has 13617 states and 22332 transitions. Word has length 133 [2020-12-22 09:09:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:05,333 INFO L481 AbstractCegarLoop]: Abstraction has 13617 states and 22332 transitions. [2020-12-22 09:09:05,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:09:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 13617 states and 22332 transitions. [2020-12-22 09:09:05,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:09:05,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:05,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:05,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:09:05,340 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:05,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:05,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2032293143, now seen corresponding path program 1 times [2020-12-22 09:09:05,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:05,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224478992] [2020-12-22 09:09:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:05,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224478992] [2020-12-22 09:09:05,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:05,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:05,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117040989] [2020-12-22 09:09:05,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:05,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:05,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:05,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:05,425 INFO L87 Difference]: Start difference. First operand 13617 states and 22332 transitions. Second operand 3 states. [2020-12-22 09:09:06,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:06,739 INFO L93 Difference]: Finished difference Result 30205 states and 49579 transitions. [2020-12-22 09:09:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:06,740 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 09:09:06,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:06,786 INFO L225 Difference]: With dead ends: 30205 [2020-12-22 09:09:06,787 INFO L226 Difference]: Without dead ends: 20859 [2020-12-22 09:09:06,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:06,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20859 states. [2020-12-22 09:09:07,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20859 to 20857. [2020-12-22 09:09:07,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20857 states. [2020-12-22 09:09:08,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20857 states to 20857 states and 34111 transitions. [2020-12-22 09:09:08,038 INFO L78 Accepts]: Start accepts. Automaton has 20857 states and 34111 transitions. Word has length 134 [2020-12-22 09:09:08,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:08,038 INFO L481 AbstractCegarLoop]: Abstraction has 20857 states and 34111 transitions. [2020-12-22 09:09:08,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:08,039 INFO L276 IsEmpty]: Start isEmpty. Operand 20857 states and 34111 transitions. [2020-12-22 09:09:08,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:09:08,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:08,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:08,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:09:08,042 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:08,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1085233451, now seen corresponding path program 1 times [2020-12-22 09:09:08,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:08,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519270503] [2020-12-22 09:09:08,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:08,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519270503] [2020-12-22 09:09:08,123 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:08,123 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:08,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265813870] [2020-12-22 09:09:08,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:08,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:08,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:08,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:08,125 INFO L87 Difference]: Start difference. First operand 20857 states and 34111 transitions. Second operand 3 states. [2020-12-22 09:09:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:09,420 INFO L93 Difference]: Finished difference Result 46075 states and 75425 transitions. [2020-12-22 09:09:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:09,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 09:09:09,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:09,482 INFO L225 Difference]: With dead ends: 46075 [2020-12-22 09:09:09,482 INFO L226 Difference]: Without dead ends: 31711 [2020-12-22 09:09:09,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:09,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31711 states. [2020-12-22 09:09:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31711 to 31709. [2020-12-22 09:09:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31709 states. [2020-12-22 09:09:11,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31709 states to 31709 states and 51693 transitions. [2020-12-22 09:09:11,584 INFO L78 Accepts]: Start accepts. Automaton has 31709 states and 51693 transitions. Word has length 134 [2020-12-22 09:09:11,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:11,584 INFO L481 AbstractCegarLoop]: Abstraction has 31709 states and 51693 transitions. [2020-12-22 09:09:11,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:11,585 INFO L276 IsEmpty]: Start isEmpty. Operand 31709 states and 51693 transitions. [2020-12-22 09:09:11,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:09:11,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:11,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:11,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:09:11,592 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:11,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:11,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1854132875, now seen corresponding path program 1 times [2020-12-22 09:09:11,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:11,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660661701] [2020-12-22 09:09:11,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:11,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660661701] [2020-12-22 09:09:11,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:11,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:11,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103780898] [2020-12-22 09:09:11,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:11,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:11,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:11,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:11,707 INFO L87 Difference]: Start difference. First operand 31709 states and 51693 transitions. Second operand 3 states. [2020-12-22 09:09:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:13,527 INFO L93 Difference]: Finished difference Result 61885 states and 101019 transitions. [2020-12-22 09:09:13,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:13,528 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 09:09:13,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:13,601 INFO L225 Difference]: With dead ends: 61885 [2020-12-22 09:09:13,602 INFO L226 Difference]: Without dead ends: 44439 [2020-12-22 09:09:13,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:13,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44439 states. [2020-12-22 09:09:15,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44439 to 44437. [2020-12-22 09:09:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44437 states. [2020-12-22 09:09:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44437 states to 44437 states and 72219 transitions. [2020-12-22 09:09:16,139 INFO L78 Accepts]: Start accepts. Automaton has 44437 states and 72219 transitions. Word has length 134 [2020-12-22 09:09:16,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:16,140 INFO L481 AbstractCegarLoop]: Abstraction has 44437 states and 72219 transitions. [2020-12-22 09:09:16,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 44437 states and 72219 transitions. [2020-12-22 09:09:16,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:09:16,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:16,142 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:16,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:09:16,143 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:16,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:16,143 INFO L82 PathProgramCache]: Analyzing trace with hash 134986668, now seen corresponding path program 1 times [2020-12-22 09:09:16,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:16,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297622260] [2020-12-22 09:09:16,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:16,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297622260] [2020-12-22 09:09:16,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:16,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:09:16,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654424238] [2020-12-22 09:09:16,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:09:16,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:16,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:09:16,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:09:16,244 INFO L87 Difference]: Start difference. First operand 44437 states and 72219 transitions. Second operand 4 states. [2020-12-22 09:09:20,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:20,859 INFO L93 Difference]: Finished difference Result 141593 states and 230510 transitions. [2020-12-22 09:09:20,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:20,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-12-22 09:09:20,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:21,047 INFO L225 Difference]: With dead ends: 141593 [2020-12-22 09:09:21,048 INFO L226 Difference]: Without dead ends: 97569 [2020-12-22 09:09:21,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97569 states. [2020-12-22 09:09:25,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97569 to 70869. [2020-12-22 09:09:25,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70869 states. [2020-12-22 09:09:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70869 states to 70869 states and 114919 transitions. [2020-12-22 09:09:25,272 INFO L78 Accepts]: Start accepts. Automaton has 70869 states and 114919 transitions. Word has length 134 [2020-12-22 09:09:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:25,273 INFO L481 AbstractCegarLoop]: Abstraction has 70869 states and 114919 transitions. [2020-12-22 09:09:25,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:09:25,273 INFO L276 IsEmpty]: Start isEmpty. Operand 70869 states and 114919 transitions. [2020-12-22 09:09:25,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:09:25,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:25,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:25,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:09:25,275 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:25,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:25,275 INFO L82 PathProgramCache]: Analyzing trace with hash -415568993, now seen corresponding path program 1 times [2020-12-22 09:09:25,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:25,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785490325] [2020-12-22 09:09:25,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:25,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:25,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785490325] [2020-12-22 09:09:25,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:25,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:09:25,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751938795] [2020-12-22 09:09:25,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:09:25,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:25,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:09:25,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:25,356 INFO L87 Difference]: Start difference. First operand 70869 states and 114919 transitions. Second operand 3 states. [2020-12-22 09:09:30,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:30,512 INFO L93 Difference]: Finished difference Result 156082 states and 254329 transitions. [2020-12-22 09:09:30,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:30,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 09:09:30,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:30,678 INFO L225 Difference]: With dead ends: 156082 [2020-12-22 09:09:30,678 INFO L226 Difference]: Without dead ends: 105867 [2020-12-22 09:09:30,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:09:30,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105867 states. [2020-12-22 09:09:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105867 to 105865. [2020-12-22 09:09:36,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105865 states. [2020-12-22 09:09:36,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105865 states to 105865 states and 171369 transitions. [2020-12-22 09:09:36,539 INFO L78 Accepts]: Start accepts. Automaton has 105865 states and 171369 transitions. Word has length 134 [2020-12-22 09:09:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:09:36,539 INFO L481 AbstractCegarLoop]: Abstraction has 105865 states and 171369 transitions. [2020-12-22 09:09:36,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:09:36,540 INFO L276 IsEmpty]: Start isEmpty. Operand 105865 states and 171369 transitions. [2020-12-22 09:09:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 09:09:36,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:09:36,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:09:36,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:09:36,542 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:09:36,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:09:36,542 INFO L82 PathProgramCache]: Analyzing trace with hash -644135267, now seen corresponding path program 1 times [2020-12-22 09:09:36,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:09:36,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781507000] [2020-12-22 09:09:36,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:09:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:09:36,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:09:36,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781507000] [2020-12-22 09:09:36,746 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:09:36,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:09:36,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969318789] [2020-12-22 09:09:36,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:09:36,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:09:36,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:09:36,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:09:36,748 INFO L87 Difference]: Start difference. First operand 105865 states and 171369 transitions. Second operand 4 states. [2020-12-22 09:09:48,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:48,170 INFO L93 Difference]: Finished difference Result 313617 states and 507550 transitions. [2020-12-22 09:09:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:09:48,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-12-22 09:09:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:48,563 INFO L225 Difference]: With dead ends: 313617 [2020-12-22 09:09:48,563 INFO L226 Difference]: Without dead ends: 207763 [2020-12-22 09:09:48,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 09:09:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207763 states. [2020-12-22 09:09:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207763 to 207761. [2020-12-22 09:09:59,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207761 states. [2020-12-22 09:10:00,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207761 states to 207761 states and 335023 transitions. [2020-12-22 09:10:00,799 INFO L78 Accepts]: Start accepts. Automaton has 207761 states and 335023 transitions. Word has length 136 [2020-12-22 09:10:00,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:00,800 INFO L481 AbstractCegarLoop]: Abstraction has 207761 states and 335023 transitions. [2020-12-22 09:10:00,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:10:00,800 INFO L276 IsEmpty]: Start isEmpty. Operand 207761 states and 335023 transitions. [2020-12-22 09:10:00,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 09:10:00,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:00,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:10:00,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:10:00,806 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:00,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1014832252, now seen corresponding path program 1 times [2020-12-22 09:10:00,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:00,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452099737] [2020-12-22 09:10:00,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:00,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:10:00,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452099737] [2020-12-22 09:10:00,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:00,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:00,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916251678] [2020-12-22 09:10:00,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:00,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:00,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:00,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:00,933 INFO L87 Difference]: Start difference. First operand 207761 states and 335023 transitions. Second operand 3 states. [2020-12-22 09:10:17,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:10:17,705 INFO L93 Difference]: Finished difference Result 500842 states and 811062 transitions. [2020-12-22 09:10:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:10:17,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-22 09:10:17,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:10:18,485 INFO L225 Difference]: With dead ends: 500842 [2020-12-22 09:10:18,486 INFO L226 Difference]: Without dead ends: 293477 [2020-12-22 09:10:18,653 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:18,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293477 states. [2020-12-22 09:10:34,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293477 to 284961. [2020-12-22 09:10:34,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284961 states. [2020-12-22 09:10:35,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284961 states to 284961 states and 458048 transitions. [2020-12-22 09:10:35,477 INFO L78 Accepts]: Start accepts. Automaton has 284961 states and 458048 transitions. Word has length 137 [2020-12-22 09:10:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:10:35,478 INFO L481 AbstractCegarLoop]: Abstraction has 284961 states and 458048 transitions. [2020-12-22 09:10:35,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:10:35,478 INFO L276 IsEmpty]: Start isEmpty. Operand 284961 states and 458048 transitions. [2020-12-22 09:10:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 09:10:35,485 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:10:35,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:10:35,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:10:35,485 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:10:35,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:10:35,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1296071763, now seen corresponding path program 1 times [2020-12-22 09:10:35,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:10:35,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874523253] [2020-12-22 09:10:35,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:10:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:10:35,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 09:10:35,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874523253] [2020-12-22 09:10:35,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:10:35,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:10:35,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823730455] [2020-12-22 09:10:35,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:10:35,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:10:35,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:10:35,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:10:35,666 INFO L87 Difference]: Start difference. First operand 284961 states and 458048 transitions. Second operand 3 states. [2020-12-22 09:11:07,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:11:07,436 INFO L93 Difference]: Finished difference Result 843630 states and 1355584 transitions. [2020-12-22 09:11:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:11:07,437 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-22 09:11:07,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:11:08,685 INFO L225 Difference]: With dead ends: 843630 [2020-12-22 09:11:08,686 INFO L226 Difference]: Without dead ends: 558794 [2020-12-22 09:11:09,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:11:09,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558794 states.