/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/product-lines/elevator_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:11:55,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:11:55,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:11:55,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:11:55,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:11:55,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:11:55,823 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:11:55,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:11:55,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:11:55,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:11:55,837 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:11:55,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:11:55,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:11:55,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:11:55,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:11:55,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:11:55,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:11:55,876 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:11:55,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:11:55,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:11:55,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:11:55,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:11:55,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:11:55,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:11:55,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:11:55,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:11:55,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:11:55,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:11:55,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:11:55,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:11:55,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:11:55,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:11:55,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:11:55,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:11:55,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:11:55,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:11:55,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:11:55,947 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:11:55,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:11:55,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:11:55,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:11:55,949 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:11:55,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:11:55,950 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:11:55,950 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:11:55,950 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:11:55,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:11:55,950 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:11:55,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:11:55,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:11:55,951 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:11:55,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:11:55,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:11:55,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:11:55,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:11:55,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:11:55,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:11:55,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:11:55,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:11:55,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:11:55,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:11:55,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:11:55,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:11:56,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:11:56,358 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:11:56,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:11:56,362 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:11:56,363 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:11:56,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2020-12-22 06:11:56,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666df4d62/93fe82d7e5204a6a80a6669ec16d7a9c/FLAGd46dde53e [2020-12-22 06:11:57,397 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:11:57,398 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product28.cil.c [2020-12-22 06:11:57,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666df4d62/93fe82d7e5204a6a80a6669ec16d7a9c/FLAGd46dde53e [2020-12-22 06:11:57,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/666df4d62/93fe82d7e5204a6a80a6669ec16d7a9c [2020-12-22 06:11:57,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:11:57,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:11:57,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:11:57,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:11:57,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:11:57,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:11:57" (1/1) ... [2020-12-22 06:11:57,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ba8bb91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:57, skipping insertion in model container [2020-12-22 06:11:57,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:11:57" (1/1) ... [2020-12-22 06:11:57,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:11:57,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:11:58,236 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/product-lines/elevator_spec3_product28.cil.c[72897,72910] [2020-12-22 06:11:58,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:11:58,254 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:11:58,437 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/product-lines/elevator_spec3_product28.cil.c[72897,72910] [2020-12-22 06:11:58,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:11:58,507 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:11:58,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58 WrapperNode [2020-12-22 06:11:58,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:11:58,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:11:58,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:11:58,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:11:58,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (1/1) ... [2020-12-22 06:11:58,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (1/1) ... [2020-12-22 06:11:59,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:11:59,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:11:59,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:11:59,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:11:59,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (1/1) ... [2020-12-22 06:11:59,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (1/1) ... [2020-12-22 06:11:59,770 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (1/1) ... [2020-12-22 06:11:59,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (1/1) ... [2020-12-22 06:12:00,077 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (1/1) ... [2020-12-22 06:12:00,456 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (1/1) ... [2020-12-22 06:12:00,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (1/1) ... [2020-12-22 06:12:00,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:12:00,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:12:00,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:12:00,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:12:00,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (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 06:12:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:12:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:12:00,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:12:00,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:12:24,128 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:12:24,129 INFO L299 CfgBuilder]: Removed 3017 assume(true) statements. [2020-12-22 06:12:24,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:12:24 BoogieIcfgContainer [2020-12-22 06:12:24,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:12:24,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:12:24,146 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:12:24,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:12:24,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:11:57" (1/3) ... [2020-12-22 06:12:24,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbb2683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:12:24, skipping insertion in model container [2020-12-22 06:12:24,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:11:58" (2/3) ... [2020-12-22 06:12:24,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dbb2683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:12:24, skipping insertion in model container [2020-12-22 06:12:24,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:12:24" (3/3) ... [2020-12-22 06:12:24,153 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2020-12-22 06:12:24,160 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:12:24,170 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-12-22 06:12:24,191 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-12-22 06:12:24,255 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:12:24,256 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:12:24,256 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:12:24,256 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:12:24,256 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:12:24,256 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:12:24,256 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:12:24,256 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:12:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 12523 states. [2020-12-22 06:12:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-22 06:12:24,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:24,436 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] [2020-12-22 06:12:24,436 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:24,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1872061796, now seen corresponding path program 1 times [2020-12-22 06:12:24,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:24,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694757746] [2020-12-22 06:12:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:24,928 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 06:12:24,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694757746] [2020-12-22 06:12:24,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:24,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:24,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707006733] [2020-12-22 06:12:24,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:24,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:24,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:24,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:24,961 INFO L87 Difference]: Start difference. First operand 12523 states. Second operand 4 states. [2020-12-22 06:12:26,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:26,955 INFO L93 Difference]: Finished difference Result 49917 states and 93949 transitions. [2020-12-22 06:12:26,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:26,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-22 06:12:26,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:27,217 INFO L225 Difference]: With dead ends: 49917 [2020-12-22 06:12:27,217 INFO L226 Difference]: Without dead ends: 37407 [2020-12-22 06:12:27,266 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 06:12:27,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37407 states. [2020-12-22 06:12:27,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37407 to 12531. [2020-12-22 06:12:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12531 states. [2020-12-22 06:12:28,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12531 states to 12531 states and 23563 transitions. [2020-12-22 06:12:28,113 INFO L78 Accepts]: Start accepts. Automaton has 12531 states and 23563 transitions. Word has length 30 [2020-12-22 06:12:28,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:28,114 INFO L481 AbstractCegarLoop]: Abstraction has 12531 states and 23563 transitions. [2020-12-22 06:12:28,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:28,115 INFO L276 IsEmpty]: Start isEmpty. Operand 12531 states and 23563 transitions. [2020-12-22 06:12:28,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 06:12:28,126 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:28,126 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] [2020-12-22 06:12:28,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:12:28,128 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:28,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:28,129 INFO L82 PathProgramCache]: Analyzing trace with hash -587302747, now seen corresponding path program 1 times [2020-12-22 06:12:28,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:28,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742246075] [2020-12-22 06:12:28,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:28,285 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 06:12:28,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742246075] [2020-12-22 06:12:28,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:28,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:28,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342694017] [2020-12-22 06:12:28,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:28,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:28,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:28,289 INFO L87 Difference]: Start difference. First operand 12531 states and 23563 transitions. Second operand 3 states. [2020-12-22 06:12:28,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:28,751 INFO L93 Difference]: Finished difference Result 24978 states and 46973 transitions. [2020-12-22 06:12:28,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:12:28,752 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-12-22 06:12:28,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:28,794 INFO L225 Difference]: With dead ends: 24978 [2020-12-22 06:12:28,794 INFO L226 Difference]: Without dead ends: 12461 [2020-12-22 06:12:28,816 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 06:12:28,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12461 states. [2020-12-22 06:12:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12461 to 12461. [2020-12-22 06:12:29,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12461 states. [2020-12-22 06:12:29,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 23423 transitions. [2020-12-22 06:12:29,162 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 23423 transitions. Word has length 31 [2020-12-22 06:12:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:29,163 INFO L481 AbstractCegarLoop]: Abstraction has 12461 states and 23423 transitions. [2020-12-22 06:12:29,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:12:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 23423 transitions. [2020-12-22 06:12:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:12:29,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:29,165 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] [2020-12-22 06:12:29,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:12:29,166 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:29,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1974581796, now seen corresponding path program 1 times [2020-12-22 06:12:29,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:29,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559655587] [2020-12-22 06:12:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:29,682 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 06:12:29,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559655587] [2020-12-22 06:12:29,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:29,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:29,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882541330] [2020-12-22 06:12:29,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:29,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:29,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:29,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:29,692 INFO L87 Difference]: Start difference. First operand 12461 states and 23423 transitions. Second operand 4 states. [2020-12-22 06:12:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:30,483 INFO L93 Difference]: Finished difference Result 24896 states and 46809 transitions. [2020-12-22 06:12:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:30,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-12-22 06:12:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:30,520 INFO L225 Difference]: With dead ends: 24896 [2020-12-22 06:12:30,520 INFO L226 Difference]: Without dead ends: 12461 [2020-12-22 06:12:30,539 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 06:12:30,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12461 states. [2020-12-22 06:12:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12461 to 12461. [2020-12-22 06:12:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12461 states. [2020-12-22 06:12:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 23421 transitions. [2020-12-22 06:12:31,005 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 23421 transitions. Word has length 34 [2020-12-22 06:12:31,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:31,013 INFO L481 AbstractCegarLoop]: Abstraction has 12461 states and 23421 transitions. [2020-12-22 06:12:31,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 23421 transitions. [2020-12-22 06:12:31,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 06:12:31,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:31,017 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] [2020-12-22 06:12:31,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:12:31,017 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:31,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:31,018 INFO L82 PathProgramCache]: Analyzing trace with hash -372134761, now seen corresponding path program 1 times [2020-12-22 06:12:31,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:31,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499082255] [2020-12-22 06:12:31,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:31,170 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 06:12:31,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499082255] [2020-12-22 06:12:31,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:31,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:31,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003476531] [2020-12-22 06:12:31,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:31,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:31,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:31,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:31,178 INFO L87 Difference]: Start difference. First operand 12461 states and 23421 transitions. Second operand 4 states. [2020-12-22 06:12:32,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:32,012 INFO L93 Difference]: Finished difference Result 24896 states and 46806 transitions. [2020-12-22 06:12:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:32,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 06:12:32,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:32,056 INFO L225 Difference]: With dead ends: 24896 [2020-12-22 06:12:32,057 INFO L226 Difference]: Without dead ends: 12461 [2020-12-22 06:12:32,080 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 06:12:32,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12461 states. [2020-12-22 06:12:32,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12461 to 12461. [2020-12-22 06:12:32,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12461 states. [2020-12-22 06:12:32,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 23419 transitions. [2020-12-22 06:12:32,556 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 23419 transitions. Word has length 35 [2020-12-22 06:12:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:32,556 INFO L481 AbstractCegarLoop]: Abstraction has 12461 states and 23419 transitions. [2020-12-22 06:12:32,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 23419 transitions. [2020-12-22 06:12:32,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:12:32,557 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:32,557 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] [2020-12-22 06:12:32,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:12:32,558 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:32,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:32,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1368688599, now seen corresponding path program 1 times [2020-12-22 06:12:32,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:32,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553919535] [2020-12-22 06:12:32,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:32,630 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 06:12:32,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553919535] [2020-12-22 06:12:32,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:32,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:32,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581922991] [2020-12-22 06:12:32,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:32,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:32,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:32,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:32,633 INFO L87 Difference]: Start difference. First operand 12461 states and 23419 transitions. Second operand 4 states. [2020-12-22 06:12:33,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:33,303 INFO L93 Difference]: Finished difference Result 24896 states and 46803 transitions. [2020-12-22 06:12:33,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:33,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:12:33,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:33,338 INFO L225 Difference]: With dead ends: 24896 [2020-12-22 06:12:33,339 INFO L226 Difference]: Without dead ends: 12461 [2020-12-22 06:12:33,363 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 06:12:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12461 states. [2020-12-22 06:12:33,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12461 to 12461. [2020-12-22 06:12:33,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12461 states. [2020-12-22 06:12:33,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 23417 transitions. [2020-12-22 06:12:33,914 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 23417 transitions. Word has length 36 [2020-12-22 06:12:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:33,914 INFO L481 AbstractCegarLoop]: Abstraction has 12461 states and 23417 transitions. [2020-12-22 06:12:33,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 23417 transitions. [2020-12-22 06:12:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:12:33,915 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:33,915 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] [2020-12-22 06:12:33,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:12:33,916 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:33,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1190756558, now seen corresponding path program 1 times [2020-12-22 06:12:33,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:33,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756772941] [2020-12-22 06:12:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:34,001 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 06:12:34,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756772941] [2020-12-22 06:12:34,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:34,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:12:34,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757822386] [2020-12-22 06:12:34,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:12:34,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:34,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:12:34,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:12:34,004 INFO L87 Difference]: Start difference. First operand 12461 states and 23417 transitions. Second operand 4 states. [2020-12-22 06:12:34,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:34,617 INFO L93 Difference]: Finished difference Result 24896 states and 46800 transitions. [2020-12-22 06:12:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:12:34,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:12:34,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:34,650 INFO L225 Difference]: With dead ends: 24896 [2020-12-22 06:12:34,651 INFO L226 Difference]: Without dead ends: 12461 [2020-12-22 06:12:34,665 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 06:12:34,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12461 states. [2020-12-22 06:12:35,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12461 to 12461. [2020-12-22 06:12:35,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12461 states. [2020-12-22 06:12:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12461 states to 12461 states and 23415 transitions. [2020-12-22 06:12:35,158 INFO L78 Accepts]: Start accepts. Automaton has 12461 states and 23415 transitions. Word has length 37 [2020-12-22 06:12:35,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:35,159 INFO L481 AbstractCegarLoop]: Abstraction has 12461 states and 23415 transitions. [2020-12-22 06:12:35,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:12:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 12461 states and 23415 transitions. [2020-12-22 06:12:35,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:12:35,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:35,160 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] [2020-12-22 06:12:35,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:12:35,160 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:35,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:35,161 INFO L82 PathProgramCache]: Analyzing trace with hash 380427730, now seen corresponding path program 1 times [2020-12-22 06:12:35,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:35,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675145642] [2020-12-22 06:12:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:35,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:12:35,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675145642] [2020-12-22 06:12:35,247 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:35,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:35,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255853101] [2020-12-22 06:12:35,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:35,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:35,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:35,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:35,248 INFO L87 Difference]: Start difference. First operand 12461 states and 23415 transitions. Second operand 5 states. [2020-12-22 06:12:37,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:37,595 INFO L93 Difference]: Finished difference Result 35036 states and 65721 transitions. [2020-12-22 06:12:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:12:37,596 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 06:12:37,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:37,661 INFO L225 Difference]: With dead ends: 35036 [2020-12-22 06:12:37,661 INFO L226 Difference]: Without dead ends: 22645 [2020-12-22 06:12:37,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:12:37,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22645 states. [2020-12-22 06:12:38,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22645 to 22132. [2020-12-22 06:12:38,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22132 states. [2020-12-22 06:12:38,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22132 states to 22132 states and 41588 transitions. [2020-12-22 06:12:38,569 INFO L78 Accepts]: Start accepts. Automaton has 22132 states and 41588 transitions. Word has length 38 [2020-12-22 06:12:38,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:38,569 INFO L481 AbstractCegarLoop]: Abstraction has 22132 states and 41588 transitions. [2020-12-22 06:12:38,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:38,570 INFO L276 IsEmpty]: Start isEmpty. Operand 22132 states and 41588 transitions. [2020-12-22 06:12:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:12:38,570 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:38,570 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] [2020-12-22 06:12:38,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:12:38,571 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:38,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:38,571 INFO L82 PathProgramCache]: Analyzing trace with hash -312286227, now seen corresponding path program 1 times [2020-12-22 06:12:38,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:38,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371328067] [2020-12-22 06:12:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:38,667 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 06:12:38,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371328067] [2020-12-22 06:12:38,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:38,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:38,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726995116] [2020-12-22 06:12:38,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:38,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:38,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:38,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:38,672 INFO L87 Difference]: Start difference. First operand 22132 states and 41588 transitions. Second operand 5 states. [2020-12-22 06:12:46,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:46,299 INFO L93 Difference]: Finished difference Result 185813 states and 349393 transitions. [2020-12-22 06:12:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:12:46,301 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-12-22 06:12:46,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:46,849 INFO L225 Difference]: With dead ends: 185813 [2020-12-22 06:12:46,850 INFO L226 Difference]: Without dead ends: 163751 [2020-12-22 06:12:46,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:12:47,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163751 states. [2020-12-22 06:12:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163751 to 41583. [2020-12-22 06:12:49,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41583 states. [2020-12-22 06:12:49,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41583 states to 41583 states and 78132 transitions. [2020-12-22 06:12:49,574 INFO L78 Accepts]: Start accepts. Automaton has 41583 states and 78132 transitions. Word has length 38 [2020-12-22 06:12:49,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:49,574 INFO L481 AbstractCegarLoop]: Abstraction has 41583 states and 78132 transitions. [2020-12-22 06:12:49,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:12:49,575 INFO L276 IsEmpty]: Start isEmpty. Operand 41583 states and 78132 transitions. [2020-12-22 06:12:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:12:49,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:49,576 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] [2020-12-22 06:12:49,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:12:49,576 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:49,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash 364115817, now seen corresponding path program 1 times [2020-12-22 06:12:49,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:49,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678549781] [2020-12-22 06:12:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:49,635 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 06:12:49,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678549781] [2020-12-22 06:12:49,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:49,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:12:49,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097785607] [2020-12-22 06:12:49,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:12:49,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:49,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:12:49,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:12:49,638 INFO L87 Difference]: Start difference. First operand 41583 states and 78132 transitions. Second operand 3 states. [2020-12-22 06:12:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:12:52,718 INFO L93 Difference]: Finished difference Result 123589 states and 232200 transitions. [2020-12-22 06:12:52,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:12:52,718 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-12-22 06:12:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:12:52,951 INFO L225 Difference]: With dead ends: 123589 [2020-12-22 06:12:52,951 INFO L226 Difference]: Without dead ends: 82038 [2020-12-22 06:12:53,000 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 06:12:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82038 states. [2020-12-22 06:12:54,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82038 to 41459. [2020-12-22 06:12:54,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41459 states. [2020-12-22 06:12:54,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41459 states to 41459 states and 77884 transitions. [2020-12-22 06:12:54,938 INFO L78 Accepts]: Start accepts. Automaton has 41459 states and 77884 transitions. Word has length 39 [2020-12-22 06:12:54,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:12:54,939 INFO L481 AbstractCegarLoop]: Abstraction has 41459 states and 77884 transitions. [2020-12-22 06:12:54,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:12:54,939 INFO L276 IsEmpty]: Start isEmpty. Operand 41459 states and 77884 transitions. [2020-12-22 06:12:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:12:54,939 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:12:54,939 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] [2020-12-22 06:12:54,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:12:54,939 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:12:54,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:12:54,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1878207738, now seen corresponding path program 1 times [2020-12-22 06:12:54,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:12:54,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17842489] [2020-12-22 06:12:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:12:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:12:55,021 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 06:12:55,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17842489] [2020-12-22 06:12:55,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:12:55,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:12:55,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324396823] [2020-12-22 06:12:55,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:12:55,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:12:55,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:12:55,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:12:55,023 INFO L87 Difference]: Start difference. First operand 41459 states and 77884 transitions. Second operand 5 states. [2020-12-22 06:13:00,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:00,757 INFO L93 Difference]: Finished difference Result 99218 states and 186201 transitions. [2020-12-22 06:13:00,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:13:00,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-12-22 06:13:00,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:00,867 INFO L225 Difference]: With dead ends: 99218 [2020-12-22 06:13:00,867 INFO L226 Difference]: Without dead ends: 57793 [2020-12-22 06:13:00,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:13:00,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57793 states. [2020-12-22 06:13:02,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57793 to 57333. [2020-12-22 06:13:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57333 states. [2020-12-22 06:13:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57333 states to 57333 states and 106860 transitions. [2020-12-22 06:13:02,820 INFO L78 Accepts]: Start accepts. Automaton has 57333 states and 106860 transitions. Word has length 39 [2020-12-22 06:13:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:02,820 INFO L481 AbstractCegarLoop]: Abstraction has 57333 states and 106860 transitions. [2020-12-22 06:13:02,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 57333 states and 106860 transitions. [2020-12-22 06:13:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 06:13:02,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:02,821 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] [2020-12-22 06:13:02,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:13:02,821 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:02,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:02,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1866550395, now seen corresponding path program 1 times [2020-12-22 06:13:02,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:02,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104571030] [2020-12-22 06:13:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:02,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:13:02,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104571030] [2020-12-22 06:13:02,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:02,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:13:02,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451043703] [2020-12-22 06:13:02,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:13:02,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:02,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:13:02,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:13:02,904 INFO L87 Difference]: Start difference. First operand 57333 states and 106860 transitions. Second operand 6 states. [2020-12-22 06:13:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:10,319 INFO L93 Difference]: Finished difference Result 171921 states and 319876 transitions. [2020-12-22 06:13:10,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-22 06:13:10,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2020-12-22 06:13:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:10,549 INFO L225 Difference]: With dead ends: 171921 [2020-12-22 06:13:10,549 INFO L226 Difference]: Without dead ends: 114628 [2020-12-22 06:13:10,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-22 06:13:10,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114628 states. [2020-12-22 06:13:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114628 to 57333. [2020-12-22 06:13:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57333 states. [2020-12-22 06:13:13,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57333 states to 57333 states and 106749 transitions. [2020-12-22 06:13:13,046 INFO L78 Accepts]: Start accepts. Automaton has 57333 states and 106749 transitions. Word has length 42 [2020-12-22 06:13:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:13,047 INFO L481 AbstractCegarLoop]: Abstraction has 57333 states and 106749 transitions. [2020-12-22 06:13:13,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:13:13,047 INFO L276 IsEmpty]: Start isEmpty. Operand 57333 states and 106749 transitions. [2020-12-22 06:13:13,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:13:13,047 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:13,047 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] [2020-12-22 06:13:13,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:13:13,048 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:13,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:13,048 INFO L82 PathProgramCache]: Analyzing trace with hash 352474762, now seen corresponding path program 1 times [2020-12-22 06:13:13,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:13,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139742412] [2020-12-22 06:13:13,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:13,115 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 06:13:13,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139742412] [2020-12-22 06:13:13,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:13,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:13:13,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180794951] [2020-12-22 06:13:13,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:13:13,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:13,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:13:13,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:13:13,117 INFO L87 Difference]: Start difference. First operand 57333 states and 106749 transitions. Second operand 5 states. [2020-12-22 06:13:27,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:27,395 INFO L93 Difference]: Finished difference Result 491383 states and 916407 transitions. [2020-12-22 06:13:27,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:13:27,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-12-22 06:13:27,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:28,568 INFO L225 Difference]: With dead ends: 491383 [2020-12-22 06:13:28,568 INFO L226 Difference]: Without dead ends: 434109 [2020-12-22 06:13:28,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:13:29,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434109 states. [2020-12-22 06:13:35,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434109 to 110369. [2020-12-22 06:13:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110369 states. [2020-12-22 06:13:35,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110369 states to 110369 states and 205438 transitions. [2020-12-22 06:13:35,462 INFO L78 Accepts]: Start accepts. Automaton has 110369 states and 205438 transitions. Word has length 43 [2020-12-22 06:13:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:35,463 INFO L481 AbstractCegarLoop]: Abstraction has 110369 states and 205438 transitions. [2020-12-22 06:13:35,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:13:35,463 INFO L276 IsEmpty]: Start isEmpty. Operand 110369 states and 205438 transitions. [2020-12-22 06:13:35,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 06:13:35,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:35,463 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] [2020-12-22 06:13:35,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:13:35,464 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:35,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:35,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1068191488, now seen corresponding path program 1 times [2020-12-22 06:13:35,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:35,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017600611] [2020-12-22 06:13:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:35,522 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 06:13:35,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017600611] [2020-12-22 06:13:35,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:35,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:35,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436593106] [2020-12-22 06:13:35,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:35,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:35,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:35,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:35,526 INFO L87 Difference]: Start difference. First operand 110369 states and 205438 transitions. Second operand 3 states. [2020-12-22 06:13:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:42,688 INFO L93 Difference]: Finished difference Result 328490 states and 611714 transitions. [2020-12-22 06:13:42,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:42,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 06:13:42,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:43,150 INFO L225 Difference]: With dead ends: 328490 [2020-12-22 06:13:43,150 INFO L226 Difference]: Without dead ends: 218158 [2020-12-22 06:13:43,445 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 06:13:43,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218158 states. [2020-12-22 06:13:47,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218158 to 110115. [2020-12-22 06:13:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110115 states. [2020-12-22 06:13:48,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110115 states to 110115 states and 204937 transitions. [2020-12-22 06:13:48,217 INFO L78 Accepts]: Start accepts. Automaton has 110115 states and 204937 transitions. Word has length 44 [2020-12-22 06:13:48,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:13:48,217 INFO L481 AbstractCegarLoop]: Abstraction has 110115 states and 204937 transitions. [2020-12-22 06:13:48,217 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:13:48,217 INFO L276 IsEmpty]: Start isEmpty. Operand 110115 states and 204937 transitions. [2020-12-22 06:13:48,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:13:48,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:13:48,218 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] [2020-12-22 06:13:48,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:13:48,218 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:13:48,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:13:48,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1039817606, now seen corresponding path program 1 times [2020-12-22 06:13:48,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:13:48,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796868360] [2020-12-22 06:13:48,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:13:48,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:13:48,276 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 06:13:48,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796868360] [2020-12-22 06:13:48,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:13:48,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:13:48,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358138968] [2020-12-22 06:13:48,277 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:13:48,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:13:48,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:13:48,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:13:48,278 INFO L87 Difference]: Start difference. First operand 110115 states and 204937 transitions. Second operand 3 states. [2020-12-22 06:13:56,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:13:56,918 INFO L93 Difference]: Finished difference Result 327989 states and 610741 transitions. [2020-12-22 06:13:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:13:56,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-12-22 06:13:56,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:13:57,561 INFO L225 Difference]: With dead ends: 327989 [2020-12-22 06:13:57,561 INFO L226 Difference]: Without dead ends: 217917 [2020-12-22 06:13:57,665 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 06:13:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217917 states. [2020-12-22 06:14:02,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217917 to 110003. [2020-12-22 06:14:02,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110003 states. [2020-12-22 06:14:02,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110003 states to 110003 states and 204601 transitions. [2020-12-22 06:14:02,727 INFO L78 Accepts]: Start accepts. Automaton has 110003 states and 204601 transitions. Word has length 48 [2020-12-22 06:14:02,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:02,727 INFO L481 AbstractCegarLoop]: Abstraction has 110003 states and 204601 transitions. [2020-12-22 06:14:02,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:14:02,727 INFO L276 IsEmpty]: Start isEmpty. Operand 110003 states and 204601 transitions. [2020-12-22 06:14:02,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:14:02,728 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:02,728 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] [2020-12-22 06:14:02,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:14:02,729 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:02,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:02,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1826891069, now seen corresponding path program 1 times [2020-12-22 06:14:02,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:02,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397158544] [2020-12-22 06:14:02,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:02,819 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 06:14:02,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397158544] [2020-12-22 06:14:02,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:02,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:14:02,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897331988] [2020-12-22 06:14:02,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:14:02,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:14:02,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:14:02,822 INFO L87 Difference]: Start difference. First operand 110003 states and 204601 transitions. Second operand 5 states. [2020-12-22 06:14:30,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:14:30,938 INFO L93 Difference]: Finished difference Result 934796 states and 1742178 transitions. [2020-12-22 06:14:30,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:14:30,938 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-12-22 06:14:30,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:14:33,336 INFO L225 Difference]: With dead ends: 934796 [2020-12-22 06:14:33,337 INFO L226 Difference]: Without dead ends: 824847 [2020-12-22 06:14:33,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:14:35,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824847 states. [2020-12-22 06:14:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824847 to 214371. [2020-12-22 06:14:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214371 states. [2020-12-22 06:14:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214371 states to 214371 states and 398521 transitions. [2020-12-22 06:14:49,079 INFO L78 Accepts]: Start accepts. Automaton has 214371 states and 398521 transitions. Word has length 49 [2020-12-22 06:14:49,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:14:49,079 INFO L481 AbstractCegarLoop]: Abstraction has 214371 states and 398521 transitions. [2020-12-22 06:14:49,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:14:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 214371 states and 398521 transitions. [2020-12-22 06:14:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:14:49,080 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:14:49,080 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] [2020-12-22 06:14:49,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:14:49,080 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:14:49,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:14:49,081 INFO L82 PathProgramCache]: Analyzing trace with hash 861151788, now seen corresponding path program 1 times [2020-12-22 06:14:49,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:14:49,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553300083] [2020-12-22 06:14:49,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:14:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:14:49,179 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 06:14:49,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553300083] [2020-12-22 06:14:49,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:14:49,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:14:49,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643428782] [2020-12-22 06:14:49,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:14:49,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:14:49,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:14:49,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:14:49,184 INFO L87 Difference]: Start difference. First operand 214371 states and 398521 transitions. Second operand 3 states. [2020-12-22 06:15:05,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:15:05,208 INFO L93 Difference]: Finished difference Result 638445 states and 1187875 transitions. [2020-12-22 06:15:05,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:15:05,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2020-12-22 06:15:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:15:06,206 INFO L225 Difference]: With dead ends: 638445 [2020-12-22 06:15:06,206 INFO L226 Difference]: Without dead ends: 424124 [2020-12-22 06:15:06,456 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 06:15:06,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424124 states.