/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_spec1_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:02:26,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:02:26,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:02:26,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:02:26,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:02:26,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:02:26,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:02:26,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:02:26,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:02:27,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:02:27,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:02:27,007 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:02:27,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:02:27,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:02:27,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:02:27,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:02:27,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:02:27,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:02:27,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:02:27,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:02:27,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:02:27,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:02:27,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:02:27,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:02:27,065 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:02:27,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:02:27,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:02:27,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:02:27,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:02:27,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:02:27,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:02:27,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:02:27,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:02:27,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:02:27,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:02:27,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:02:27,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:02:27,132 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:02:27,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:02:27,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:02:27,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:02:27,137 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:02:27,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:02:27,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:02:27,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:02:27,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:02:27,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:02:27,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:02:27,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:02:27,140 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:02:27,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:02:27,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:02:27,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:02:27,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:02:27,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:02:27,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:02:27,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:02:27,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:02:27,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:02:27,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:02:27,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:02:27,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:02:27,144 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:02:27,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:02:27,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:02:27,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:02:27,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:02:27,582 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:02:27,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2020-12-22 06:02:27,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4860602fe/21c4dce5462c453fac51eff7c28e997e/FLAG0872bc813 [2020-12-22 06:02:28,598 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:02:28,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2020-12-22 06:02:28,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4860602fe/21c4dce5462c453fac51eff7c28e997e/FLAG0872bc813 [2020-12-22 06:02:28,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4860602fe/21c4dce5462c453fac51eff7c28e997e [2020-12-22 06:02:28,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:02:28,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:02:28,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:02:28,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:02:28,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:02:28,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4acb646b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:28, skipping insertion in model container [2020-12-22 06:02:28,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:02:28" (1/1) ... [2020-12-22 06:02:28,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:02:28,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:02:28,976 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_spec1_product30.cil.c[1221,1234] [2020-12-22 06:02:29,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:02:29,513 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:02:29,533 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_spec1_product30.cil.c[1221,1234] [2020-12-22 06:02:29,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:02:29,738 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:02:29,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29 WrapperNode [2020-12-22 06:02:29,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:02:29,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:02:29,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:02:29,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:02:29,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (1/1) ... [2020-12-22 06:02:29,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (1/1) ... [2020-12-22 06:02:30,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:02:30,391 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:02:30,391 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:02:30,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:02:30,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (1/1) ... [2020-12-22 06:02:30,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (1/1) ... [2020-12-22 06:02:30,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (1/1) ... [2020-12-22 06:02:30,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (1/1) ... [2020-12-22 06:02:30,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (1/1) ... [2020-12-22 06:02:30,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (1/1) ... [2020-12-22 06:02:30,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (1/1) ... [2020-12-22 06:02:31,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:02:31,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:02:31,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:02:31,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:02:31,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (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 06:02:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:02:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:02:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:02:31,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:02:45,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:02:45,424 INFO L299 CfgBuilder]: Removed 1529 assume(true) statements. [2020-12-22 06:02:45,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:02:45 BoogieIcfgContainer [2020-12-22 06:02:45,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:02:45,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:02:45,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:02:45,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:02:45,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:02:28" (1/3) ... [2020-12-22 06:02:45,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595d697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:02:45, skipping insertion in model container [2020-12-22 06:02:45,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:02:29" (2/3) ... [2020-12-22 06:02:45,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@595d697 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:02:45, skipping insertion in model container [2020-12-22 06:02:45,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:02:45" (3/3) ... [2020-12-22 06:02:45,447 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2020-12-22 06:02:45,455 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:02:45,469 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:02:45,491 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:02:45,542 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:02:45,543 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:02:45,543 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:02:45,543 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:02:45,543 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:02:45,543 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:02:45,543 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:02:45,544 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:02:45,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6907 states. [2020-12-22 06:02:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:02:45,661 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:45,662 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 06:02:45,663 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:45,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:45,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1109125055, now seen corresponding path program 1 times [2020-12-22 06:02:45,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:45,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273307521] [2020-12-22 06:02:45,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:46,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:46,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273307521] [2020-12-22 06:02:46,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:46,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:02:46,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067795750] [2020-12-22 06:02:46,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:02:46,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:46,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:02:46,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:02:46,171 INFO L87 Difference]: Start difference. First operand 6907 states. Second operand 3 states. [2020-12-22 06:02:46,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:46,824 INFO L93 Difference]: Finished difference Result 20641 states and 39047 transitions. [2020-12-22 06:02:46,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:02:46,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-12-22 06:02:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:46,972 INFO L225 Difference]: With dead ends: 20641 [2020-12-22 06:02:46,972 INFO L226 Difference]: Without dead ends: 13739 [2020-12-22 06:02:47,002 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 06:02:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13739 states. [2020-12-22 06:02:47,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13739 to 6903. [2020-12-22 06:02:47,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6903 states. [2020-12-22 06:02:47,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6903 states to 6903 states and 13046 transitions. [2020-12-22 06:02:47,418 INFO L78 Accepts]: Start accepts. Automaton has 6903 states and 13046 transitions. Word has length 36 [2020-12-22 06:02:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:47,418 INFO L481 AbstractCegarLoop]: Abstraction has 6903 states and 13046 transitions. [2020-12-22 06:02:47,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:02:47,418 INFO L276 IsEmpty]: Start isEmpty. Operand 6903 states and 13046 transitions. [2020-12-22 06:02:47,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-22 06:02:47,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:47,428 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 06:02:47,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:02:47,430 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:47,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:47,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1836914808, now seen corresponding path program 1 times [2020-12-22 06:02:47,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:47,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618166446] [2020-12-22 06:02:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:47,661 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 06:02:47,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618166446] [2020-12-22 06:02:47,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:47,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:02:47,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440298133] [2020-12-22 06:02:47,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:02:47,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:47,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:02:47,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:02:47,665 INFO L87 Difference]: Start difference. First operand 6903 states and 13046 transitions. Second operand 6 states. [2020-12-22 06:02:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:49,257 INFO L93 Difference]: Finished difference Result 27387 states and 51781 transitions. [2020-12-22 06:02:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:02:49,258 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-12-22 06:02:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:49,371 INFO L225 Difference]: With dead ends: 27387 [2020-12-22 06:02:49,372 INFO L226 Difference]: Without dead ends: 20527 [2020-12-22 06:02:49,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 06:02:49,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20527 states. [2020-12-22 06:02:49,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20527 to 6899. [2020-12-22 06:02:49,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6899 states. [2020-12-22 06:02:49,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6899 states to 6899 states and 13035 transitions. [2020-12-22 06:02:49,989 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 13035 transitions. Word has length 43 [2020-12-22 06:02:49,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:49,989 INFO L481 AbstractCegarLoop]: Abstraction has 6899 states and 13035 transitions. [2020-12-22 06:02:49,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:02:49,990 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 13035 transitions. [2020-12-22 06:02:49,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:02:49,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:49,996 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] [2020-12-22 06:02:49,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:02:49,997 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:50,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:50,001 INFO L82 PathProgramCache]: Analyzing trace with hash -819623675, now seen corresponding path program 1 times [2020-12-22 06:02:50,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:50,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516561938] [2020-12-22 06:02:50,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:50,105 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 06:02:50,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516561938] [2020-12-22 06:02:50,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:50,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:50,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211761498] [2020-12-22 06:02:50,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:50,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:50,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:50,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:50,108 INFO L87 Difference]: Start difference. First operand 6899 states and 13035 transitions. Second operand 4 states. [2020-12-22 06:02:51,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:51,149 INFO L93 Difference]: Finished difference Result 20585 states and 38914 transitions. [2020-12-22 06:02:51,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:51,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-12-22 06:02:51,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:51,202 INFO L225 Difference]: With dead ends: 20585 [2020-12-22 06:02:51,202 INFO L226 Difference]: Without dead ends: 13729 [2020-12-22 06:02:51,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13729 states. [2020-12-22 06:02:51,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13729 to 6899. [2020-12-22 06:02:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6899 states. [2020-12-22 06:02:51,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6899 states to 6899 states and 13026 transitions. [2020-12-22 06:02:51,751 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 13026 transitions. Word has length 45 [2020-12-22 06:02:51,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:51,752 INFO L481 AbstractCegarLoop]: Abstraction has 6899 states and 13026 transitions. [2020-12-22 06:02:51,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:51,752 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 13026 transitions. [2020-12-22 06:02:51,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:02:51,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:51,754 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] [2020-12-22 06:02:51,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:02:51,754 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:51,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:51,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1081196498, now seen corresponding path program 1 times [2020-12-22 06:02:51,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:51,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866067477] [2020-12-22 06:02:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:51,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:51,827 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 06:02:51,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866067477] [2020-12-22 06:02:51,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:51,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:51,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201560555] [2020-12-22 06:02:51,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:51,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:51,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:51,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:51,830 INFO L87 Difference]: Start difference. First operand 6899 states and 13026 transitions. Second operand 4 states. [2020-12-22 06:02:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:52,786 INFO L93 Difference]: Finished difference Result 20585 states and 38896 transitions. [2020-12-22 06:02:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:52,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:02:52,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:52,836 INFO L225 Difference]: With dead ends: 20585 [2020-12-22 06:02:52,836 INFO L226 Difference]: Without dead ends: 13729 [2020-12-22 06:02:52,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13729 states. [2020-12-22 06:02:53,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13729 to 6899. [2020-12-22 06:02:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6899 states. [2020-12-22 06:02:53,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6899 states to 6899 states and 13017 transitions. [2020-12-22 06:02:53,358 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 13017 transitions. Word has length 47 [2020-12-22 06:02:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:53,358 INFO L481 AbstractCegarLoop]: Abstraction has 6899 states and 13017 transitions. [2020-12-22 06:02:53,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 13017 transitions. [2020-12-22 06:02:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:02:53,360 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:53,360 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 06:02:53,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:02:53,361 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:53,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1868889851, now seen corresponding path program 1 times [2020-12-22 06:02:53,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:53,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496046170] [2020-12-22 06:02:53,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:53,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:53,460 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 06:02:53,460 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496046170] [2020-12-22 06:02:53,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:53,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:53,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667483195] [2020-12-22 06:02:53,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:53,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:53,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:53,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:53,463 INFO L87 Difference]: Start difference. First operand 6899 states and 13017 transitions. Second operand 4 states. [2020-12-22 06:02:55,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:55,451 INFO L93 Difference]: Finished difference Result 34185 states and 64592 transitions. [2020-12-22 06:02:55,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:55,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:02:55,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:55,567 INFO L225 Difference]: With dead ends: 34185 [2020-12-22 06:02:55,567 INFO L226 Difference]: Without dead ends: 27329 [2020-12-22 06:02:55,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27329 states. [2020-12-22 06:02:56,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27329 to 6899. [2020-12-22 06:02:56,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6899 states. [2020-12-22 06:02:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6899 states to 6899 states and 13013 transitions. [2020-12-22 06:02:56,155 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 13013 transitions. Word has length 49 [2020-12-22 06:02:56,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:56,158 INFO L481 AbstractCegarLoop]: Abstraction has 6899 states and 13013 transitions. [2020-12-22 06:02:56,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 13013 transitions. [2020-12-22 06:02:56,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:02:56,160 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:56,161 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 06:02:56,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:02:56,162 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:56,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:56,163 INFO L82 PathProgramCache]: Analyzing trace with hash -437379707, now seen corresponding path program 1 times [2020-12-22 06:02:56,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:56,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184016332] [2020-12-22 06:02:56,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:02:56,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184016332] [2020-12-22 06:02:56,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:56,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:56,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078303985] [2020-12-22 06:02:56,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:56,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:56,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:56,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:56,291 INFO L87 Difference]: Start difference. First operand 6899 states and 13013 transitions. Second operand 4 states. [2020-12-22 06:02:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:57,464 INFO L93 Difference]: Finished difference Result 27364 states and 51695 transitions. [2020-12-22 06:02:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:57,464 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:02:57,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:57,529 INFO L225 Difference]: With dead ends: 27364 [2020-12-22 06:02:57,529 INFO L226 Difference]: Without dead ends: 20487 [2020-12-22 06:02:57,548 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 06:02:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20487 states. [2020-12-22 06:02:58,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20487 to 6881. [2020-12-22 06:02:58,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6881 states. [2020-12-22 06:02:58,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 12982 transitions. [2020-12-22 06:02:58,069 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 12982 transitions. Word has length 49 [2020-12-22 06:02:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:58,070 INFO L481 AbstractCegarLoop]: Abstraction has 6881 states and 12982 transitions. [2020-12-22 06:02:58,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:58,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 12982 transitions. [2020-12-22 06:02:58,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:02:58,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:58,071 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] [2020-12-22 06:02:58,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:02:58,072 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:58,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:58,072 INFO L82 PathProgramCache]: Analyzing trace with hash 414805034, now seen corresponding path program 1 times [2020-12-22 06:02:58,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:58,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910777367] [2020-12-22 06:02:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:58,167 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 06:02:58,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910777367] [2020-12-22 06:02:58,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:58,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:58,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108086924] [2020-12-22 06:02:58,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:58,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:58,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:58,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:58,170 INFO L87 Difference]: Start difference. First operand 6881 states and 12982 transitions. Second operand 4 states. [2020-12-22 06:02:59,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:02:59,077 INFO L93 Difference]: Finished difference Result 20549 states and 38809 transitions. [2020-12-22 06:02:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:02:59,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:02:59,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:02:59,128 INFO L225 Difference]: With dead ends: 20549 [2020-12-22 06:02:59,128 INFO L226 Difference]: Without dead ends: 13690 [2020-12-22 06:02:59,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:02:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13690 states. [2020-12-22 06:02:59,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13690 to 6881. [2020-12-22 06:02:59,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6881 states. [2020-12-22 06:02:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 12976 transitions. [2020-12-22 06:02:59,678 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 12976 transitions. Word has length 50 [2020-12-22 06:02:59,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:02:59,679 INFO L481 AbstractCegarLoop]: Abstraction has 6881 states and 12976 transitions. [2020-12-22 06:02:59,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:02:59,679 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 12976 transitions. [2020-12-22 06:02:59,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:02:59,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:02:59,680 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] [2020-12-22 06:02:59,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:02:59,681 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:02:59,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:02:59,682 INFO L82 PathProgramCache]: Analyzing trace with hash -51097878, now seen corresponding path program 1 times [2020-12-22 06:02:59,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:02:59,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466474397] [2020-12-22 06:02:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:02:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:02:59,741 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 06:02:59,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466474397] [2020-12-22 06:02:59,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:02:59,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:02:59,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277088212] [2020-12-22 06:02:59,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:02:59,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:02:59,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:02:59,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:02:59,744 INFO L87 Difference]: Start difference. First operand 6881 states and 12976 transitions. Second operand 4 states. [2020-12-22 06:03:00,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:00,477 INFO L93 Difference]: Finished difference Result 20549 states and 38797 transitions. [2020-12-22 06:03:00,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:00,478 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 06:03:00,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:00,513 INFO L225 Difference]: With dead ends: 20549 [2020-12-22 06:03:00,513 INFO L226 Difference]: Without dead ends: 13690 [2020-12-22 06:03:00,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13690 states. [2020-12-22 06:03:00,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13690 to 6881. [2020-12-22 06:03:00,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6881 states. [2020-12-22 06:03:00,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 12970 transitions. [2020-12-22 06:03:00,928 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 12970 transitions. Word has length 51 [2020-12-22 06:03:00,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:00,929 INFO L481 AbstractCegarLoop]: Abstraction has 6881 states and 12970 transitions. [2020-12-22 06:03:00,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:00,930 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 12970 transitions. [2020-12-22 06:03:00,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:03:00,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:00,931 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] [2020-12-22 06:03:00,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:03:00,931 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:00,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:00,932 INFO L82 PathProgramCache]: Analyzing trace with hash 144813423, now seen corresponding path program 1 times [2020-12-22 06:03:00,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:00,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042824794] [2020-12-22 06:03:00,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:01,067 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 06:03:01,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042824794] [2020-12-22 06:03:01,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:01,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:01,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559104074] [2020-12-22 06:03:01,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:01,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:01,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:01,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:01,078 INFO L87 Difference]: Start difference. First operand 6881 states and 12970 transitions. Second operand 7 states. [2020-12-22 06:03:02,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:02,716 INFO L93 Difference]: Finished difference Result 34156 states and 64506 transitions. [2020-12-22 06:03:02,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:02,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-12-22 06:03:02,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:02,789 INFO L225 Difference]: With dead ends: 34156 [2020-12-22 06:03:02,790 INFO L226 Difference]: Without dead ends: 27303 [2020-12-22 06:03:02,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:03:02,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27303 states. [2020-12-22 06:03:03,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27303 to 6883. [2020-12-22 06:03:03,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6883 states. [2020-12-22 06:03:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6883 states to 6883 states and 12971 transitions. [2020-12-22 06:03:03,611 INFO L78 Accepts]: Start accepts. Automaton has 6883 states and 12971 transitions. Word has length 52 [2020-12-22 06:03:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:03,612 INFO L481 AbstractCegarLoop]: Abstraction has 6883 states and 12971 transitions. [2020-12-22 06:03:03,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 6883 states and 12971 transitions. [2020-12-22 06:03:03,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:03:03,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:03,614 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 06:03:03,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:03:03,615 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:03,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:03,616 INFO L82 PathProgramCache]: Analyzing trace with hash 522557268, now seen corresponding path program 1 times [2020-12-22 06:03:03,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:03,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977438738] [2020-12-22 06:03:03,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:03,742 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 06:03:03,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977438738] [2020-12-22 06:03:03,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:03,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:03,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989175670] [2020-12-22 06:03:03,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:03,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:03,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:03,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:03,748 INFO L87 Difference]: Start difference. First operand 6883 states and 12971 transitions. Second operand 7 states. [2020-12-22 06:03:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:05,575 INFO L93 Difference]: Finished difference Result 34148 states and 64485 transitions. [2020-12-22 06:03:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:05,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 54 [2020-12-22 06:03:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:05,646 INFO L225 Difference]: With dead ends: 34148 [2020-12-22 06:03:05,647 INFO L226 Difference]: Without dead ends: 27298 [2020-12-22 06:03:05,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:03:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27298 states. [2020-12-22 06:03:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27298 to 6888. [2020-12-22 06:03:06,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6888 states. [2020-12-22 06:03:06,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 12979 transitions. [2020-12-22 06:03:06,205 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 12979 transitions. Word has length 54 [2020-12-22 06:03:06,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:06,205 INFO L481 AbstractCegarLoop]: Abstraction has 6888 states and 12979 transitions. [2020-12-22 06:03:06,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:06,206 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 12979 transitions. [2020-12-22 06:03:06,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 06:03:06,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:06,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:06,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:03:06,207 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:06,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:06,208 INFO L82 PathProgramCache]: Analyzing trace with hash 448666607, now seen corresponding path program 1 times [2020-12-22 06:03:06,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:06,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868922124] [2020-12-22 06:03:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:06,281 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 06:03:06,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868922124] [2020-12-22 06:03:06,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:06,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:06,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384072123] [2020-12-22 06:03:06,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:06,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:06,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:06,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:06,284 INFO L87 Difference]: Start difference. First operand 6888 states and 12979 transitions. Second operand 3 states. [2020-12-22 06:03:06,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:06,834 INFO L93 Difference]: Finished difference Result 13718 states and 25876 transitions. [2020-12-22 06:03:06,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:06,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-12-22 06:03:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:06,850 INFO L225 Difference]: With dead ends: 13718 [2020-12-22 06:03:06,850 INFO L226 Difference]: Without dead ends: 6867 [2020-12-22 06:03:06,858 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 06:03:06,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6867 states. [2020-12-22 06:03:07,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6867 to 6867. [2020-12-22 06:03:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6867 states. [2020-12-22 06:03:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6867 states to 6867 states and 12943 transitions. [2020-12-22 06:03:07,274 INFO L78 Accepts]: Start accepts. Automaton has 6867 states and 12943 transitions. Word has length 56 [2020-12-22 06:03:07,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:07,275 INFO L481 AbstractCegarLoop]: Abstraction has 6867 states and 12943 transitions. [2020-12-22 06:03:07,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:07,275 INFO L276 IsEmpty]: Start isEmpty. Operand 6867 states and 12943 transitions. [2020-12-22 06:03:07,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:03:07,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:07,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:07,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:03:07,277 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:07,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:07,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2059510486, now seen corresponding path program 1 times [2020-12-22 06:03:07,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:07,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297741286] [2020-12-22 06:03:07,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:07,344 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 06:03:07,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297741286] [2020-12-22 06:03:07,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:07,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:07,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831121971] [2020-12-22 06:03:07,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:07,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:07,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:07,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:07,346 INFO L87 Difference]: Start difference. First operand 6867 states and 12943 transitions. Second operand 5 states. [2020-12-22 06:03:08,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:08,004 INFO L93 Difference]: Finished difference Result 13667 states and 25798 transitions. [2020-12-22 06:03:08,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:08,005 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2020-12-22 06:03:08,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:08,021 INFO L225 Difference]: With dead ends: 13667 [2020-12-22 06:03:08,021 INFO L226 Difference]: Without dead ends: 6861 [2020-12-22 06:03:08,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6861 states. [2020-12-22 06:03:08,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6861 to 6861. [2020-12-22 06:03:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6861 states. [2020-12-22 06:03:08,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6861 states to 6861 states and 12934 transitions. [2020-12-22 06:03:08,480 INFO L78 Accepts]: Start accepts. Automaton has 6861 states and 12934 transitions. Word has length 58 [2020-12-22 06:03:08,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:08,480 INFO L481 AbstractCegarLoop]: Abstraction has 6861 states and 12934 transitions. [2020-12-22 06:03:08,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:08,481 INFO L276 IsEmpty]: Start isEmpty. Operand 6861 states and 12934 transitions. [2020-12-22 06:03:08,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-22 06:03:08,482 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:08,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:08,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:03:08,482 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1528901802, now seen corresponding path program 1 times [2020-12-22 06:03:08,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:08,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153075759] [2020-12-22 06:03:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:08,551 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 06:03:08,552 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153075759] [2020-12-22 06:03:08,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:08,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:08,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637087549] [2020-12-22 06:03:08,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:08,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:08,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:08,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:08,554 INFO L87 Difference]: Start difference. First operand 6861 states and 12934 transitions. Second operand 4 states. [2020-12-22 06:03:08,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:08,991 INFO L93 Difference]: Finished difference Result 13661 states and 25789 transitions. [2020-12-22 06:03:08,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:08,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-12-22 06:03:08,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:09,002 INFO L225 Difference]: With dead ends: 13661 [2020-12-22 06:03:09,002 INFO L226 Difference]: Without dead ends: 6847 [2020-12-22 06:03:09,011 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 06:03:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6847 states. [2020-12-22 06:03:09,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6847 to 6847. [2020-12-22 06:03:09,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6847 states. [2020-12-22 06:03:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6847 states to 6847 states and 12913 transitions. [2020-12-22 06:03:09,429 INFO L78 Accepts]: Start accepts. Automaton has 6847 states and 12913 transitions. Word has length 58 [2020-12-22 06:03:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:09,429 INFO L481 AbstractCegarLoop]: Abstraction has 6847 states and 12913 transitions. [2020-12-22 06:03:09,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6847 states and 12913 transitions. [2020-12-22 06:03:09,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 06:03:09,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:09,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:09,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:03:09,431 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:09,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:09,432 INFO L82 PathProgramCache]: Analyzing trace with hash 28509533, now seen corresponding path program 1 times [2020-12-22 06:03:09,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:09,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88678479] [2020-12-22 06:03:09,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:09,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:09,510 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 06:03:09,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88678479] [2020-12-22 06:03:09,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:09,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:03:09,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619042425] [2020-12-22 06:03:09,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:09,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:09,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:09,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:09,513 INFO L87 Difference]: Start difference. First operand 6847 states and 12913 transitions. Second operand 6 states. [2020-12-22 06:03:10,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:10,011 INFO L93 Difference]: Finished difference Result 13661 states and 25784 transitions. [2020-12-22 06:03:10,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:10,011 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-12-22 06:03:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:10,021 INFO L225 Difference]: With dead ends: 13661 [2020-12-22 06:03:10,021 INFO L226 Difference]: Without dead ends: 6867 [2020-12-22 06:03:10,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:03:10,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6867 states. [2020-12-22 06:03:10,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6867 to 6847. [2020-12-22 06:03:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6847 states. [2020-12-22 06:03:10,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6847 states to 6847 states and 12912 transitions. [2020-12-22 06:03:10,452 INFO L78 Accepts]: Start accepts. Automaton has 6847 states and 12912 transitions. Word has length 59 [2020-12-22 06:03:10,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:10,452 INFO L481 AbstractCegarLoop]: Abstraction has 6847 states and 12912 transitions. [2020-12-22 06:03:10,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:10,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6847 states and 12912 transitions. [2020-12-22 06:03:10,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:03:10,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:10,454 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:10,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:03:10,454 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:10,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:10,455 INFO L82 PathProgramCache]: Analyzing trace with hash -285887087, now seen corresponding path program 1 times [2020-12-22 06:03:10,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:10,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940522173] [2020-12-22 06:03:10,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:10,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:10,526 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 06:03:10,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940522173] [2020-12-22 06:03:10,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:10,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:03:10,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918309276] [2020-12-22 06:03:10,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:10,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:10,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:10,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:10,529 INFO L87 Difference]: Start difference. First operand 6847 states and 12912 transitions. Second operand 6 states. [2020-12-22 06:03:10,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:10,978 INFO L93 Difference]: Finished difference Result 13651 states and 25765 transitions. [2020-12-22 06:03:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:10,982 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-12-22 06:03:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:10,991 INFO L225 Difference]: With dead ends: 13651 [2020-12-22 06:03:10,991 INFO L226 Difference]: Without dead ends: 6862 [2020-12-22 06:03:10,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:03:11,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6862 states. [2020-12-22 06:03:11,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6862 to 6847. [2020-12-22 06:03:11,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6847 states. [2020-12-22 06:03:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6847 states to 6847 states and 12911 transitions. [2020-12-22 06:03:11,403 INFO L78 Accepts]: Start accepts. Automaton has 6847 states and 12911 transitions. Word has length 60 [2020-12-22 06:03:11,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:11,404 INFO L481 AbstractCegarLoop]: Abstraction has 6847 states and 12911 transitions. [2020-12-22 06:03:11,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 6847 states and 12911 transitions. [2020-12-22 06:03:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:03:11,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:11,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:11,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:03:11,405 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:11,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:11,406 INFO L82 PathProgramCache]: Analyzing trace with hash -2003476206, now seen corresponding path program 1 times [2020-12-22 06:03:11,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:11,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254564352] [2020-12-22 06:03:11,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:11,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:11,487 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 06:03:11,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254564352] [2020-12-22 06:03:11,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:11,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:11,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572837627] [2020-12-22 06:03:11,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:11,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:11,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:11,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:11,490 INFO L87 Difference]: Start difference. First operand 6847 states and 12911 transitions. Second operand 3 states. [2020-12-22 06:03:12,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:12,310 INFO L93 Difference]: Finished difference Result 15187 states and 28689 transitions. [2020-12-22 06:03:12,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:12,316 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:03:12,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:12,336 INFO L225 Difference]: With dead ends: 15187 [2020-12-22 06:03:12,337 INFO L226 Difference]: Without dead ends: 11738 [2020-12-22 06:03:12,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:12,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11738 states. [2020-12-22 06:03:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11738 to 9759. [2020-12-22 06:03:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9759 states. [2020-12-22 06:03:12,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9759 states to 9759 states and 18427 transitions. [2020-12-22 06:03:12,877 INFO L78 Accepts]: Start accepts. Automaton has 9759 states and 18427 transitions. Word has length 61 [2020-12-22 06:03:12,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:12,877 INFO L481 AbstractCegarLoop]: Abstraction has 9759 states and 18427 transitions. [2020-12-22 06:03:12,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:12,878 INFO L276 IsEmpty]: Start isEmpty. Operand 9759 states and 18427 transitions. [2020-12-22 06:03:12,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:03:12,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:12,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:12,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:03:12,883 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:12,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1864796415, now seen corresponding path program 1 times [2020-12-22 06:03:12,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:12,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602599082] [2020-12-22 06:03:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:12,973 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 06:03:12,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602599082] [2020-12-22 06:03:12,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:12,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:12,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974233989] [2020-12-22 06:03:12,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:12,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:12,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:12,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:12,976 INFO L87 Difference]: Start difference. First operand 9759 states and 18427 transitions. Second operand 5 states. [2020-12-22 06:03:13,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:13,903 INFO L93 Difference]: Finished difference Result 19889 states and 37414 transitions. [2020-12-22 06:03:13,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:03:13,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 79 [2020-12-22 06:03:13,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:13,917 INFO L225 Difference]: With dead ends: 19889 [2020-12-22 06:03:13,918 INFO L226 Difference]: Without dead ends: 11361 [2020-12-22 06:03:13,927 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 06:03:13,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11361 states. [2020-12-22 06:03:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11361 to 8025. [2020-12-22 06:03:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8025 states. [2020-12-22 06:03:14,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8025 states to 8025 states and 15091 transitions. [2020-12-22 06:03:14,382 INFO L78 Accepts]: Start accepts. Automaton has 8025 states and 15091 transitions. Word has length 79 [2020-12-22 06:03:14,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:14,382 INFO L481 AbstractCegarLoop]: Abstraction has 8025 states and 15091 transitions. [2020-12-22 06:03:14,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:14,382 INFO L276 IsEmpty]: Start isEmpty. Operand 8025 states and 15091 transitions. [2020-12-22 06:03:14,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:03:14,386 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:14,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:14,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:03:14,386 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:14,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:14,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2114424974, now seen corresponding path program 1 times [2020-12-22 06:03:14,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:14,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621451808] [2020-12-22 06:03:14,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:14,459 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 06:03:14,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621451808] [2020-12-22 06:03:14,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:14,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:14,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388336745] [2020-12-22 06:03:14,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:14,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:14,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:14,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:14,461 INFO L87 Difference]: Start difference. First operand 8025 states and 15091 transitions. Second operand 3 states. [2020-12-22 06:03:15,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:15,684 INFO L93 Difference]: Finished difference Result 18804 states and 35408 transitions. [2020-12-22 06:03:15,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:15,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:03:15,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:15,706 INFO L225 Difference]: With dead ends: 18804 [2020-12-22 06:03:15,706 INFO L226 Difference]: Without dead ends: 12062 [2020-12-22 06:03:15,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:15,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12062 states. [2020-12-22 06:03:16,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12062 to 12047. [2020-12-22 06:03:16,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12047 states. [2020-12-22 06:03:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12047 states to 12047 states and 22615 transitions. [2020-12-22 06:03:16,378 INFO L78 Accepts]: Start accepts. Automaton has 12047 states and 22615 transitions. Word has length 80 [2020-12-22 06:03:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:16,378 INFO L481 AbstractCegarLoop]: Abstraction has 12047 states and 22615 transitions. [2020-12-22 06:03:16,378 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 12047 states and 22615 transitions. [2020-12-22 06:03:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:03:16,382 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:16,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:16,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:03:16,383 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:16,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:16,384 INFO L82 PathProgramCache]: Analyzing trace with hash 251521975, now seen corresponding path program 1 times [2020-12-22 06:03:16,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:16,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699378437] [2020-12-22 06:03:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:16,480 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 06:03:16,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699378437] [2020-12-22 06:03:16,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:16,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:16,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700999253] [2020-12-22 06:03:16,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:16,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:16,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:16,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:16,484 INFO L87 Difference]: Start difference. First operand 12047 states and 22615 transitions. Second operand 3 states. [2020-12-22 06:03:17,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:17,731 INFO L93 Difference]: Finished difference Result 30192 states and 56734 transitions. [2020-12-22 06:03:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:17,732 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 06:03:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:17,761 INFO L225 Difference]: With dead ends: 30192 [2020-12-22 06:03:17,761 INFO L226 Difference]: Without dead ends: 20018 [2020-12-22 06:03:17,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:17,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20018 states. [2020-12-22 06:03:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20018 to 20003. [2020-12-22 06:03:18,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20003 states. [2020-12-22 06:03:18,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20003 states to 20003 states and 37514 transitions. [2020-12-22 06:03:18,802 INFO L78 Accepts]: Start accepts. Automaton has 20003 states and 37514 transitions. Word has length 81 [2020-12-22 06:03:18,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:18,802 INFO L481 AbstractCegarLoop]: Abstraction has 20003 states and 37514 transitions. [2020-12-22 06:03:18,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:18,802 INFO L276 IsEmpty]: Start isEmpty. Operand 20003 states and 37514 transitions. [2020-12-22 06:03:18,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:03:18,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:18,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:18,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:03:18,808 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:18,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1784678825, now seen corresponding path program 1 times [2020-12-22 06:03:18,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:18,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664609491] [2020-12-22 06:03:18,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:18,898 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 06:03:18,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664609491] [2020-12-22 06:03:18,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:18,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:18,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874430649] [2020-12-22 06:03:18,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:18,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:18,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:18,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:18,901 INFO L87 Difference]: Start difference. First operand 20003 states and 37514 transitions. Second operand 3 states. [2020-12-22 06:03:21,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:21,392 INFO L93 Difference]: Finished difference Result 52792 states and 99063 transitions. [2020-12-22 06:03:21,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:21,392 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:03:21,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:21,444 INFO L225 Difference]: With dead ends: 52792 [2020-12-22 06:03:21,444 INFO L226 Difference]: Without dead ends: 35734 [2020-12-22 06:03:21,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:21,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35734 states. [2020-12-22 06:03:22,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35734 to 35719. [2020-12-22 06:03:22,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35719 states. [2020-12-22 06:03:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35719 states to 35719 states and 66932 transitions. [2020-12-22 06:03:23,031 INFO L78 Accepts]: Start accepts. Automaton has 35719 states and 66932 transitions. Word has length 82 [2020-12-22 06:03:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:23,031 INFO L481 AbstractCegarLoop]: Abstraction has 35719 states and 66932 transitions. [2020-12-22 06:03:23,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 35719 states and 66932 transitions. [2020-12-22 06:03:23,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 06:03:23,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:23,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:23,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:03:23,035 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:23,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:23,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1446460924, now seen corresponding path program 1 times [2020-12-22 06:03:23,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:23,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148029115] [2020-12-22 06:03:23,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:23,292 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 06:03:23,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148029115] [2020-12-22 06:03:23,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:23,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:23,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30286333] [2020-12-22 06:03:23,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:23,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:23,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:23,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:23,295 INFO L87 Difference]: Start difference. First operand 35719 states and 66932 transitions. Second operand 3 states. [2020-12-22 06:03:26,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:26,534 INFO L93 Difference]: Finished difference Result 97600 states and 182912 transitions. [2020-12-22 06:03:26,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:26,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-22 06:03:26,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:26,627 INFO L225 Difference]: With dead ends: 97600 [2020-12-22 06:03:26,627 INFO L226 Difference]: Without dead ends: 66754 [2020-12-22 06:03:26,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:26,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66754 states. [2020-12-22 06:03:29,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66754 to 66739. [2020-12-22 06:03:29,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66739 states. [2020-12-22 06:03:30,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66739 states to 66739 states and 124926 transitions. [2020-12-22 06:03:30,031 INFO L78 Accepts]: Start accepts. Automaton has 66739 states and 124926 transitions. Word has length 83 [2020-12-22 06:03:30,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:30,032 INFO L481 AbstractCegarLoop]: Abstraction has 66739 states and 124926 transitions. [2020-12-22 06:03:30,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:30,032 INFO L276 IsEmpty]: Start isEmpty. Operand 66739 states and 124926 transitions. [2020-12-22 06:03:30,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 06:03:30,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:30,041 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:30,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:03:30,042 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:30,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:30,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1344005186, now seen corresponding path program 1 times [2020-12-22 06:03:30,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:30,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340957942] [2020-12-22 06:03:30,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:30,148 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 06:03:30,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340957942] [2020-12-22 06:03:30,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:30,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:30,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777443647] [2020-12-22 06:03:30,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:30,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:30,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:30,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:30,154 INFO L87 Difference]: Start difference. First operand 66739 states and 124926 transitions. Second operand 5 states. [2020-12-22 06:03:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:40,843 INFO L93 Difference]: Finished difference Result 302051 states and 565102 transitions. [2020-12-22 06:03:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 06:03:40,844 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-12-22 06:03:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:41,634 INFO L225 Difference]: With dead ends: 302051 [2020-12-22 06:03:41,635 INFO L226 Difference]: Without dead ends: 243801 [2020-12-22 06:03:41,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 06:03:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243801 states. [2020-12-22 06:03:48,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243801 to 117570. [2020-12-22 06:03:48,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117570 states. [2020-12-22 06:03:49,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117570 states to 117570 states and 219695 transitions. [2020-12-22 06:03:49,245 INFO L78 Accepts]: Start accepts. Automaton has 117570 states and 219695 transitions. Word has length 84 [2020-12-22 06:03:49,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:49,245 INFO L481 AbstractCegarLoop]: Abstraction has 117570 states and 219695 transitions. [2020-12-22 06:03:49,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:49,246 INFO L276 IsEmpty]: Start isEmpty. Operand 117570 states and 219695 transitions. [2020-12-22 06:03:49,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 06:03:49,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:49,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:49,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:03:49,250 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:49,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:49,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1122169836, now seen corresponding path program 1 times [2020-12-22 06:03:49,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:49,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436401382] [2020-12-22 06:03:49,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:49,346 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 06:03:49,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436401382] [2020-12-22 06:03:49,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:49,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:03:49,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099402797] [2020-12-22 06:03:49,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:49,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:49,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:49,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:49,351 INFO L87 Difference]: Start difference. First operand 117570 states and 219695 transitions. Second operand 5 states. [2020-12-22 06:03:59,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:59,262 INFO L93 Difference]: Finished difference Result 292184 states and 545064 transitions. [2020-12-22 06:03:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:03:59,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-12-22 06:03:59,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:59,638 INFO L225 Difference]: With dead ends: 292184 [2020-12-22 06:03:59,639 INFO L226 Difference]: Without dead ends: 183508 [2020-12-22 06:03:59,731 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 06:04:00,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183508 states. [2020-12-22 06:04:06,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183508 to 117915. [2020-12-22 06:04:06,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117915 states. [2020-12-22 06:04:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117915 states to 117915 states and 220040 transitions. [2020-12-22 06:04:06,999 INFO L78 Accepts]: Start accepts. Automaton has 117915 states and 220040 transitions. Word has length 86 [2020-12-22 06:04:06,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:06,999 INFO L481 AbstractCegarLoop]: Abstraction has 117915 states and 220040 transitions. [2020-12-22 06:04:06,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:04:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 117915 states and 220040 transitions. [2020-12-22 06:04:07,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-22 06:04:07,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:07,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:07,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:04:07,004 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:07,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:07,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1381939959, now seen corresponding path program 1 times [2020-12-22 06:04:07,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:07,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960155245] [2020-12-22 06:04:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:07,096 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 06:04:07,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960155245] [2020-12-22 06:04:07,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:07,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:04:07,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006258406] [2020-12-22 06:04:07,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:04:07,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:07,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:04:07,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:04:07,098 INFO L87 Difference]: Start difference. First operand 117915 states and 220040 transitions. Second operand 3 states. [2020-12-22 06:04:16,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:16,047 INFO L93 Difference]: Finished difference Result 255274 states and 475576 transitions. [2020-12-22 06:04:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:04:16,047 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2020-12-22 06:04:16,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:16,492 INFO L225 Difference]: With dead ends: 255274 [2020-12-22 06:04:16,492 INFO L226 Difference]: Without dead ends: 145671 [2020-12-22 06:04:16,594 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 06:04:16,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145671 states. [2020-12-22 06:04:24,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145671 to 145248. [2020-12-22 06:04:24,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145248 states. [2020-12-22 06:04:24,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145248 states to 145248 states and 268335 transitions. [2020-12-22 06:04:24,750 INFO L78 Accepts]: Start accepts. Automaton has 145248 states and 268335 transitions. Word has length 91 [2020-12-22 06:04:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:24,751 INFO L481 AbstractCegarLoop]: Abstraction has 145248 states and 268335 transitions. [2020-12-22 06:04:24,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:04:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 145248 states and 268335 transitions. [2020-12-22 06:04:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-12-22 06:04:24,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:24,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:24,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:04:24,755 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:24,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1930958594, now seen corresponding path program 1 times [2020-12-22 06:04:24,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:24,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759246730] [2020-12-22 06:04:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:25,225 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 06:04:25,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759246730] [2020-12-22 06:04:25,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:25,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:04:25,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523932930] [2020-12-22 06:04:25,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:04:25,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:25,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:04:25,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:25,228 INFO L87 Difference]: Start difference. First operand 145248 states and 268335 transitions. Second operand 5 states. [2020-12-22 06:04:41,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:41,413 INFO L93 Difference]: Finished difference Result 396111 states and 730544 transitions. [2020-12-22 06:04:41,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:04:41,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-12-22 06:04:41,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:41,983 INFO L225 Difference]: With dead ends: 396111 [2020-12-22 06:04:41,983 INFO L226 Difference]: Without dead ends: 259199 [2020-12-22 06:04:42,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:04:42,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259199 states.