/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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 09:07:03,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 09:07:03,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 09:07:03,508 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 09:07:03,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 09:07:03,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 09:07:03,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 09:07:03,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 09:07:03,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 09:07:03,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 09:07:03,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 09:07:03,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 09:07:03,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 09:07:03,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 09:07:03,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 09:07:03,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 09:07:03,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 09:07:03,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 09:07:03,549 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 09:07:03,553 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 09:07:03,561 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 09:07:03,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 09:07:03,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 09:07:03,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 09:07:03,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 09:07:03,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 09:07:03,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 09:07:03,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 09:07:03,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 09:07:03,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 09:07:03,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 09:07:03,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 09:07:03,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 09:07:03,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 09:07:03,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 09:07:03,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 09:07:03,598 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 09:07:03,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 09:07:03,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 09:07:03,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 09:07:03,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 09:07:03,634 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 09:07:03,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 09:07:03,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 09:07:03,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 09:07:03,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 09:07:03,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 09:07:03,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 09:07:03,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 09:07:03,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 09:07:03,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 09:07:03,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 09:07:03,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 09:07:03,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 09:07:03,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 09:07:03,638 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 09:07:03,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 09:07:03,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 09:07:03,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 09:07:03,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 09:07:03,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 09:07:03,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 09:07:03,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 09:07:04,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 09:07:04,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 09:07:04,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 09:07:04,054 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 09:07:04,055 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 09:07:04,056 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:07:04,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a91d525/99e3cebd5d5f449eae8511844388882a/FLAG85635b7c8 [2020-12-22 09:07:04,888 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 09:07:04,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:07:04,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a91d525/99e3cebd5d5f449eae8511844388882a/FLAG85635b7c8 [2020-12-22 09:07:05,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9a91d525/99e3cebd5d5f449eae8511844388882a [2020-12-22 09:07:05,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 09:07:05,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 09:07:05,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 09:07:05,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 09:07:05,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 09:07:05,146 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:07:05" (1/1) ... [2020-12-22 09:07:05,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4518d9b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:05, skipping insertion in model container [2020-12-22 09:07:05,149 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:07:05" (1/1) ... [2020-12-22 09:07:05,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 09:07:05,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 09:07:05,641 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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13422,13435] [2020-12-22 09:07:05,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:07:05,796 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 09:07:06,009 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.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13422,13435] [2020-12-22 09:07:06,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 09:07:06,178 INFO L208 MainTranslator]: Completed translation [2020-12-22 09:07:06,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06 WrapperNode [2020-12-22 09:07:06,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 09:07:06,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 09:07:06,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 09:07:06,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 09:07:06,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (1/1) ... [2020-12-22 09:07:06,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (1/1) ... [2020-12-22 09:07:06,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 09:07:06,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 09:07:06,340 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 09:07:06,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 09:07:06,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (1/1) ... [2020-12-22 09:07:06,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (1/1) ... [2020-12-22 09:07:06,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (1/1) ... [2020-12-22 09:07:06,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (1/1) ... [2020-12-22 09:07:06,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (1/1) ... [2020-12-22 09:07:06,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (1/1) ... [2020-12-22 09:07:06,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (1/1) ... [2020-12-22 09:07:06,457 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 09:07:06,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 09:07:06,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 09:07:06,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 09:07:06,463 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (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 09:07:06,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 09:07:06,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 09:07:06,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 09:07:06,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 09:07:07,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 09:07:07,973 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 09:07:07,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:07:07 BoogieIcfgContainer [2020-12-22 09:07:07,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 09:07:07,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 09:07:07,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 09:07:07,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 09:07:07,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:07:05" (1/3) ... [2020-12-22 09:07:07,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130596f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:07:07, skipping insertion in model container [2020-12-22 09:07:07,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:07:06" (2/3) ... [2020-12-22 09:07:07,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130596f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:07:07, skipping insertion in model container [2020-12-22 09:07:07,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:07:07" (3/3) ... [2020-12-22 09:07:07,993 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-12-22 09:07:08,002 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 09:07:08,010 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 09:07:08,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 09:07:08,083 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 09:07:08,083 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 09:07:08,083 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 09:07:08,083 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 09:07:08,083 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 09:07:08,083 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 09:07:08,084 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 09:07:08,084 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 09:07:08,116 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states. [2020-12-22 09:07:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 09:07:08,145 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:08,146 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 09:07:08,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:08,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:08,154 INFO L82 PathProgramCache]: Analyzing trace with hash 687624892, now seen corresponding path program 1 times [2020-12-22 09:07:08,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:08,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486827934] [2020-12-22 09:07:08,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:08,832 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 09:07:08,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486827934] [2020-12-22 09:07:08,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:08,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:08,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876559192] [2020-12-22 09:07:08,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:08,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:08,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:08,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:08,864 INFO L87 Difference]: Start difference. First operand 350 states. Second operand 3 states. [2020-12-22 09:07:09,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:09,076 INFO L93 Difference]: Finished difference Result 652 states and 1124 transitions. [2020-12-22 09:07:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:09,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-12-22 09:07:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:09,110 INFO L225 Difference]: With dead ends: 652 [2020-12-22 09:07:09,110 INFO L226 Difference]: Without dead ends: 489 [2020-12-22 09:07:09,117 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 09:07:09,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2020-12-22 09:07:09,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 486. [2020-12-22 09:07:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-12-22 09:07:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 801 transitions. [2020-12-22 09:07:09,212 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 801 transitions. Word has length 118 [2020-12-22 09:07:09,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:09,213 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 801 transitions. [2020-12-22 09:07:09,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:09,213 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 801 transitions. [2020-12-22 09:07:09,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-22 09:07:09,216 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:09,217 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 09:07:09,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 09:07:09,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:09,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:09,218 INFO L82 PathProgramCache]: Analyzing trace with hash 787881554, now seen corresponding path program 1 times [2020-12-22 09:07:09,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:09,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261132101] [2020-12-22 09:07:09,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:09,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:09,455 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 09:07:09,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261132101] [2020-12-22 09:07:09,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:09,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:09,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570584886] [2020-12-22 09:07:09,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:09,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:09,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:09,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:09,460 INFO L87 Difference]: Start difference. First operand 486 states and 801 transitions. Second operand 3 states. [2020-12-22 09:07:09,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:09,557 INFO L93 Difference]: Finished difference Result 1052 states and 1741 transitions. [2020-12-22 09:07:09,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:09,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2020-12-22 09:07:09,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:09,563 INFO L225 Difference]: With dead ends: 1052 [2020-12-22 09:07:09,564 INFO L226 Difference]: Without dead ends: 759 [2020-12-22 09:07:09,566 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 09:07:09,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2020-12-22 09:07:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 755. [2020-12-22 09:07:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2020-12-22 09:07:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1246 transitions. [2020-12-22 09:07:09,645 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1246 transitions. Word has length 121 [2020-12-22 09:07:09,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:09,647 INFO L481 AbstractCegarLoop]: Abstraction has 755 states and 1246 transitions. [2020-12-22 09:07:09,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:09,648 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1246 transitions. [2020-12-22 09:07:09,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-22 09:07:09,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:09,653 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 09:07:09,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 09:07:09,654 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:09,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:09,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1106896185, now seen corresponding path program 1 times [2020-12-22 09:07:09,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:09,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704865335] [2020-12-22 09:07:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:09,887 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 09:07:09,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704865335] [2020-12-22 09:07:09,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:09,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:09,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338451684] [2020-12-22 09:07:09,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:09,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:09,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:09,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:09,894 INFO L87 Difference]: Start difference. First operand 755 states and 1246 transitions. Second operand 3 states. [2020-12-22 09:07:09,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:09,975 INFO L93 Difference]: Finished difference Result 1839 states and 3040 transitions. [2020-12-22 09:07:09,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:09,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-22 09:07:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:09,990 INFO L225 Difference]: With dead ends: 1839 [2020-12-22 09:07:09,990 INFO L226 Difference]: Without dead ends: 1277 [2020-12-22 09:07:09,993 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 09:07:09,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2020-12-22 09:07:10,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1271. [2020-12-22 09:07:10,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-12-22 09:07:10,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2094 transitions. [2020-12-22 09:07:10,067 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2094 transitions. Word has length 124 [2020-12-22 09:07:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:10,075 INFO L481 AbstractCegarLoop]: Abstraction has 1271 states and 2094 transitions. [2020-12-22 09:07:10,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:10,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2094 transitions. [2020-12-22 09:07:10,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-22 09:07:10,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:10,078 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 09:07:10,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 09:07:10,079 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:10,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:10,080 INFO L82 PathProgramCache]: Analyzing trace with hash -854228413, now seen corresponding path program 1 times [2020-12-22 09:07:10,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:10,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035847448] [2020-12-22 09:07:10,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:10,293 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 09:07:10,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035847448] [2020-12-22 09:07:10,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:10,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:10,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491738955] [2020-12-22 09:07:10,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:10,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:10,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:10,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:10,299 INFO L87 Difference]: Start difference. First operand 1271 states and 2094 transitions. Second operand 3 states. [2020-12-22 09:07:10,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:10,427 INFO L93 Difference]: Finished difference Result 3347 states and 5512 transitions. [2020-12-22 09:07:10,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:10,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-12-22 09:07:10,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:10,443 INFO L225 Difference]: With dead ends: 3347 [2020-12-22 09:07:10,443 INFO L226 Difference]: Without dead ends: 2269 [2020-12-22 09:07:10,447 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 09:07:10,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-12-22 09:07:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2259. [2020-12-22 09:07:10,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2259 states. [2020-12-22 09:07:10,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3706 transitions. [2020-12-22 09:07:10,578 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3706 transitions. Word has length 127 [2020-12-22 09:07:10,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:10,579 INFO L481 AbstractCegarLoop]: Abstraction has 2259 states and 3706 transitions. [2020-12-22 09:07:10,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:10,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3706 transitions. [2020-12-22 09:07:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 09:07:10,584 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:10,584 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 09:07:10,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 09:07:10,585 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash 996831134, now seen corresponding path program 1 times [2020-12-22 09:07:10,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:10,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286652755] [2020-12-22 09:07:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:10,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:10,993 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 09:07:10,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286652755] [2020-12-22 09:07:10,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:10,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 09:07:10,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272348539] [2020-12-22 09:07:10,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 09:07:10,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:10,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 09:07:10,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 09:07:10,997 INFO L87 Difference]: Start difference. First operand 2259 states and 3706 transitions. Second operand 6 states. [2020-12-22 09:07:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:12,011 INFO L93 Difference]: Finished difference Result 11839 states and 19570 transitions. [2020-12-22 09:07:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 09:07:12,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2020-12-22 09:07:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:12,064 INFO L225 Difference]: With dead ends: 11839 [2020-12-22 09:07:12,064 INFO L226 Difference]: Without dead ends: 9773 [2020-12-22 09:07:12,075 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 09:07:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9773 states. [2020-12-22 09:07:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9773 to 4189. [2020-12-22 09:07:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4189 states. [2020-12-22 09:07:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 6873 transitions. [2020-12-22 09:07:12,483 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 6873 transitions. Word has length 130 [2020-12-22 09:07:12,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:12,483 INFO L481 AbstractCegarLoop]: Abstraction has 4189 states and 6873 transitions. [2020-12-22 09:07:12,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 09:07:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 6873 transitions. [2020-12-22 09:07:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-22 09:07:12,488 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:12,488 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 09:07:12,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 09:07:12,489 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:12,490 INFO L82 PathProgramCache]: Analyzing trace with hash 769932088, now seen corresponding path program 1 times [2020-12-22 09:07:12,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:12,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879937195] [2020-12-22 09:07:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:12,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:12,619 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 09:07:12,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879937195] [2020-12-22 09:07:12,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:12,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:12,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840411056] [2020-12-22 09:07:12,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:12,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:12,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:12,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:12,623 INFO L87 Difference]: Start difference. First operand 4189 states and 6873 transitions. Second operand 4 states. [2020-12-22 09:07:13,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:13,249 INFO L93 Difference]: Finished difference Result 12287 states and 20261 transitions. [2020-12-22 09:07:13,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:13,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-12-22 09:07:13,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:13,303 INFO L225 Difference]: With dead ends: 12287 [2020-12-22 09:07:13,303 INFO L226 Difference]: Without dead ends: 8291 [2020-12-22 09:07:13,311 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 09:07:13,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8291 states. [2020-12-22 09:07:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8291 to 6223. [2020-12-22 09:07:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6223 states. [2020-12-22 09:07:13,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6223 states to 6223 states and 10226 transitions. [2020-12-22 09:07:13,816 INFO L78 Accepts]: Start accepts. Automaton has 6223 states and 10226 transitions. Word has length 131 [2020-12-22 09:07:13,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:13,817 INFO L481 AbstractCegarLoop]: Abstraction has 6223 states and 10226 transitions. [2020-12-22 09:07:13,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:07:13,817 INFO L276 IsEmpty]: Start isEmpty. Operand 6223 states and 10226 transitions. [2020-12-22 09:07:13,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-12-22 09:07:13,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:13,823 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 09:07:13,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 09:07:13,823 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:13,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:13,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1964413019, now seen corresponding path program 1 times [2020-12-22 09:07:13,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:13,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758926248] [2020-12-22 09:07:13,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:14,047 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 09:07:14,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758926248] [2020-12-22 09:07:14,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:14,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:14,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924223703] [2020-12-22 09:07:14,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:14,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:14,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:14,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:14,051 INFO L87 Difference]: Start difference. First operand 6223 states and 10226 transitions. Second operand 4 states. [2020-12-22 09:07:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:14,920 INFO L93 Difference]: Finished difference Result 18285 states and 30121 transitions. [2020-12-22 09:07:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:14,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2020-12-22 09:07:14,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:14,965 INFO L225 Difference]: With dead ends: 18285 [2020-12-22 09:07:14,965 INFO L226 Difference]: Without dead ends: 12255 [2020-12-22 09:07:14,978 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 09:07:14,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12255 states. [2020-12-22 09:07:15,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12255 to 9215. [2020-12-22 09:07:15,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9215 states. [2020-12-22 09:07:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9215 states to 9215 states and 15128 transitions. [2020-12-22 09:07:15,714 INFO L78 Accepts]: Start accepts. Automaton has 9215 states and 15128 transitions. Word has length 132 [2020-12-22 09:07:15,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:15,715 INFO L481 AbstractCegarLoop]: Abstraction has 9215 states and 15128 transitions. [2020-12-22 09:07:15,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:07:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 9215 states and 15128 transitions. [2020-12-22 09:07:15,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-22 09:07:15,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:15,721 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 09:07:15,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 09:07:15,721 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:15,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:15,722 INFO L82 PathProgramCache]: Analyzing trace with hash -825207393, now seen corresponding path program 1 times [2020-12-22 09:07:15,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:15,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128026051] [2020-12-22 09:07:15,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:15,965 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 09:07:15,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128026051] [2020-12-22 09:07:15,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:15,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:15,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089114249] [2020-12-22 09:07:15,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:15,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:15,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:15,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:15,969 INFO L87 Difference]: Start difference. First operand 9215 states and 15128 transitions. Second operand 4 states. [2020-12-22 09:07:17,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:17,271 INFO L93 Difference]: Finished difference Result 27109 states and 44609 transitions. [2020-12-22 09:07:17,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:17,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-12-22 09:07:17,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:17,320 INFO L225 Difference]: With dead ends: 27109 [2020-12-22 09:07:17,321 INFO L226 Difference]: Without dead ends: 18087 [2020-12-22 09:07:17,341 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 09:07:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18087 states. [2020-12-22 09:07:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18087 to 13617. [2020-12-22 09:07:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13617 states. [2020-12-22 09:07:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13617 states to 13617 states and 22332 transitions. [2020-12-22 09:07:18,267 INFO L78 Accepts]: Start accepts. Automaton has 13617 states and 22332 transitions. Word has length 133 [2020-12-22 09:07:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:18,267 INFO L481 AbstractCegarLoop]: Abstraction has 13617 states and 22332 transitions. [2020-12-22 09:07:18,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:07:18,267 INFO L276 IsEmpty]: Start isEmpty. Operand 13617 states and 22332 transitions. [2020-12-22 09:07:18,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:07:18,274 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:18,274 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 09:07:18,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 09:07:18,274 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:18,275 INFO L82 PathProgramCache]: Analyzing trace with hash 2032293143, now seen corresponding path program 1 times [2020-12-22 09:07:18,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:18,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200591473] [2020-12-22 09:07:18,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:18,354 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 09:07:18,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200591473] [2020-12-22 09:07:18,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:18,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:18,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736179274] [2020-12-22 09:07:18,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:18,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:18,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:18,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:18,357 INFO L87 Difference]: Start difference. First operand 13617 states and 22332 transitions. Second operand 3 states. [2020-12-22 09:07:19,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:19,393 INFO L93 Difference]: Finished difference Result 30205 states and 49579 transitions. [2020-12-22 09:07:19,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:19,393 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 09:07:19,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:19,455 INFO L225 Difference]: With dead ends: 30205 [2020-12-22 09:07:19,455 INFO L226 Difference]: Without dead ends: 20859 [2020-12-22 09:07:19,475 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 09:07:19,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20859 states. [2020-12-22 09:07:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20859 to 20857. [2020-12-22 09:07:20,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20857 states. [2020-12-22 09:07:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20857 states to 20857 states and 34111 transitions. [2020-12-22 09:07:20,635 INFO L78 Accepts]: Start accepts. Automaton has 20857 states and 34111 transitions. Word has length 134 [2020-12-22 09:07:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:20,635 INFO L481 AbstractCegarLoop]: Abstraction has 20857 states and 34111 transitions. [2020-12-22 09:07:20,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 20857 states and 34111 transitions. [2020-12-22 09:07:20,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:07:20,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:20,639 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 09:07:20,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 09:07:20,640 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:20,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:20,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1085233451, now seen corresponding path program 1 times [2020-12-22 09:07:20,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:20,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279547266] [2020-12-22 09:07:20,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:20,724 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 09:07:20,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279547266] [2020-12-22 09:07:20,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:20,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:20,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030836876] [2020-12-22 09:07:20,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:20,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:20,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:20,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:20,727 INFO L87 Difference]: Start difference. First operand 20857 states and 34111 transitions. Second operand 3 states. [2020-12-22 09:07:22,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:22,186 INFO L93 Difference]: Finished difference Result 46075 states and 75425 transitions. [2020-12-22 09:07:22,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:22,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 09:07:22,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:22,264 INFO L225 Difference]: With dead ends: 46075 [2020-12-22 09:07:22,264 INFO L226 Difference]: Without dead ends: 31711 [2020-12-22 09:07:22,285 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 09:07:22,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31711 states. [2020-12-22 09:07:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31711 to 31709. [2020-12-22 09:07:23,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31709 states. [2020-12-22 09:07:24,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31709 states to 31709 states and 51693 transitions. [2020-12-22 09:07:24,114 INFO L78 Accepts]: Start accepts. Automaton has 31709 states and 51693 transitions. Word has length 134 [2020-12-22 09:07:24,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:24,118 INFO L481 AbstractCegarLoop]: Abstraction has 31709 states and 51693 transitions. [2020-12-22 09:07:24,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 31709 states and 51693 transitions. [2020-12-22 09:07:24,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:07:24,127 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:24,127 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 09:07:24,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 09:07:24,133 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:24,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:24,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1854132875, now seen corresponding path program 1 times [2020-12-22 09:07:24,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:24,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850987671] [2020-12-22 09:07:24,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:24,230 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 09:07:24,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850987671] [2020-12-22 09:07:24,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:24,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:24,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164066970] [2020-12-22 09:07:24,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:24,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:24,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:24,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:24,233 INFO L87 Difference]: Start difference. First operand 31709 states and 51693 transitions. Second operand 3 states. [2020-12-22 09:07:26,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:26,253 INFO L93 Difference]: Finished difference Result 61885 states and 101019 transitions. [2020-12-22 09:07:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:26,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 09:07:26,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:26,341 INFO L225 Difference]: With dead ends: 61885 [2020-12-22 09:07:26,342 INFO L226 Difference]: Without dead ends: 44439 [2020-12-22 09:07:26,403 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 09:07:26,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44439 states. [2020-12-22 09:07:28,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44439 to 44437. [2020-12-22 09:07:28,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44437 states. [2020-12-22 09:07:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44437 states to 44437 states and 72219 transitions. [2020-12-22 09:07:28,694 INFO L78 Accepts]: Start accepts. Automaton has 44437 states and 72219 transitions. Word has length 134 [2020-12-22 09:07:28,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:28,695 INFO L481 AbstractCegarLoop]: Abstraction has 44437 states and 72219 transitions. [2020-12-22 09:07:28,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 44437 states and 72219 transitions. [2020-12-22 09:07:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:07:28,698 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:28,698 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 09:07:28,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 09:07:28,699 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:28,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:28,699 INFO L82 PathProgramCache]: Analyzing trace with hash 134986668, now seen corresponding path program 1 times [2020-12-22 09:07:28,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:28,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269457388] [2020-12-22 09:07:28,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:28,808 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 09:07:28,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269457388] [2020-12-22 09:07:28,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:28,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:28,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050158747] [2020-12-22 09:07:28,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:28,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:28,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:28,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:28,811 INFO L87 Difference]: Start difference. First operand 44437 states and 72219 transitions. Second operand 4 states. [2020-12-22 09:07:33,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:33,615 INFO L93 Difference]: Finished difference Result 141593 states and 230510 transitions. [2020-12-22 09:07:33,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:07:33,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2020-12-22 09:07:33,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:33,948 INFO L225 Difference]: With dead ends: 141593 [2020-12-22 09:07:33,948 INFO L226 Difference]: Without dead ends: 97569 [2020-12-22 09:07:34,021 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 09:07:34,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97569 states. [2020-12-22 09:07:37,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97569 to 70869. [2020-12-22 09:07:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70869 states. [2020-12-22 09:07:38,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70869 states to 70869 states and 114919 transitions. [2020-12-22 09:07:38,062 INFO L78 Accepts]: Start accepts. Automaton has 70869 states and 114919 transitions. Word has length 134 [2020-12-22 09:07:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:38,063 INFO L481 AbstractCegarLoop]: Abstraction has 70869 states and 114919 transitions. [2020-12-22 09:07:38,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:07:38,063 INFO L276 IsEmpty]: Start isEmpty. Operand 70869 states and 114919 transitions. [2020-12-22 09:07:38,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-22 09:07:38,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:38,065 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 09:07:38,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 09:07:38,066 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:38,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:38,067 INFO L82 PathProgramCache]: Analyzing trace with hash -415568993, now seen corresponding path program 1 times [2020-12-22 09:07:38,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:38,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252045966] [2020-12-22 09:07:38,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:38,144 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 09:07:38,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252045966] [2020-12-22 09:07:38,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:38,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:07:38,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251200143] [2020-12-22 09:07:38,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:07:38,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:38,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:07:38,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:07:38,147 INFO L87 Difference]: Start difference. First operand 70869 states and 114919 transitions. Second operand 3 states. [2020-12-22 09:07:43,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:07:43,541 INFO L93 Difference]: Finished difference Result 156082 states and 254329 transitions. [2020-12-22 09:07:43,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:07:43,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-22 09:07:43,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:07:43,729 INFO L225 Difference]: With dead ends: 156082 [2020-12-22 09:07:43,729 INFO L226 Difference]: Without dead ends: 105867 [2020-12-22 09:07:43,790 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 09:07:43,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105867 states. [2020-12-22 09:07:49,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105867 to 105865. [2020-12-22 09:07:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105865 states. [2020-12-22 09:07:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105865 states to 105865 states and 171369 transitions. [2020-12-22 09:07:49,622 INFO L78 Accepts]: Start accepts. Automaton has 105865 states and 171369 transitions. Word has length 134 [2020-12-22 09:07:49,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:07:49,623 INFO L481 AbstractCegarLoop]: Abstraction has 105865 states and 171369 transitions. [2020-12-22 09:07:49,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:07:49,623 INFO L276 IsEmpty]: Start isEmpty. Operand 105865 states and 171369 transitions. [2020-12-22 09:07:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 09:07:49,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:07:49,624 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 09:07:49,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 09:07:49,625 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:07:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:07:49,625 INFO L82 PathProgramCache]: Analyzing trace with hash -644135267, now seen corresponding path program 1 times [2020-12-22 09:07:49,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:07:49,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976553188] [2020-12-22 09:07:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:07:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:07:49,836 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 09:07:49,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976553188] [2020-12-22 09:07:49,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:07:49,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 09:07:49,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739610060] [2020-12-22 09:07:49,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 09:07:49,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:07:49,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 09:07:49,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 09:07:49,839 INFO L87 Difference]: Start difference. First operand 105865 states and 171369 transitions. Second operand 4 states. [2020-12-22 09:08:01,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:01,598 INFO L93 Difference]: Finished difference Result 313617 states and 507550 transitions. [2020-12-22 09:08:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 09:08:01,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-12-22 09:08:01,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:02,055 INFO L225 Difference]: With dead ends: 313617 [2020-12-22 09:08:02,055 INFO L226 Difference]: Without dead ends: 207763 [2020-12-22 09:08:02,163 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 09:08:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207763 states. [2020-12-22 09:08:13,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207763 to 207761. [2020-12-22 09:08:13,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207761 states. [2020-12-22 09:08:14,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207761 states to 207761 states and 335023 transitions. [2020-12-22 09:08:14,767 INFO L78 Accepts]: Start accepts. Automaton has 207761 states and 335023 transitions. Word has length 136 [2020-12-22 09:08:14,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:14,767 INFO L481 AbstractCegarLoop]: Abstraction has 207761 states and 335023 transitions. [2020-12-22 09:08:14,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 09:08:14,767 INFO L276 IsEmpty]: Start isEmpty. Operand 207761 states and 335023 transitions. [2020-12-22 09:08:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-22 09:08:14,769 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:14,769 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 09:08:14,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 09:08:14,770 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1014832252, now seen corresponding path program 1 times [2020-12-22 09:08:14,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:14,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924851007] [2020-12-22 09:08:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:14,907 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 09:08:14,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924851007] [2020-12-22 09:08:14,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:14,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:14,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274976683] [2020-12-22 09:08:14,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:14,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:14,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:14,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:14,911 INFO L87 Difference]: Start difference. First operand 207761 states and 335023 transitions. Second operand 3 states. [2020-12-22 09:08:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:08:32,054 INFO L93 Difference]: Finished difference Result 500842 states and 811062 transitions. [2020-12-22 09:08:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:08:32,055 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 137 [2020-12-22 09:08:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:08:32,935 INFO L225 Difference]: With dead ends: 500842 [2020-12-22 09:08:32,936 INFO L226 Difference]: Without dead ends: 293477 [2020-12-22 09:08:33,159 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 09:08:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293477 states. [2020-12-22 09:08:49,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293477 to 284961. [2020-12-22 09:08:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284961 states. [2020-12-22 09:08:50,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284961 states to 284961 states and 458048 transitions. [2020-12-22 09:08:50,891 INFO L78 Accepts]: Start accepts. Automaton has 284961 states and 458048 transitions. Word has length 137 [2020-12-22 09:08:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:08:50,892 INFO L481 AbstractCegarLoop]: Abstraction has 284961 states and 458048 transitions. [2020-12-22 09:08:50,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 09:08:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 284961 states and 458048 transitions. [2020-12-22 09:08:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-12-22 09:08:50,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:08:50,894 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 09:08:50,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 09:08:50,894 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:08:50,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:08:50,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1296071763, now seen corresponding path program 1 times [2020-12-22 09:08:50,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:08:50,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581783555] [2020-12-22 09:08:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:08:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:08:51,028 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 09:08:51,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581783555] [2020-12-22 09:08:51,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:08:51,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 09:08:51,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134792127] [2020-12-22 09:08:51,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 09:08:51,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:08:51,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 09:08:51,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 09:08:51,031 INFO L87 Difference]: Start difference. First operand 284961 states and 458048 transitions. Second operand 3 states. [2020-12-22 09:09:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:09:23,507 INFO L93 Difference]: Finished difference Result 843630 states and 1355584 transitions. [2020-12-22 09:09:23,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 09:09:23,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-12-22 09:09:23,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:09:25,061 INFO L225 Difference]: With dead ends: 843630 [2020-12-22 09:09:25,062 INFO L226 Difference]: Without dead ends: 558794 [2020-12-22 09:09:25,424 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 09:09:25,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558794 states.