/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_spec14_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:55:31,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:55:31,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:55:32,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:55:32,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:55:32,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:55:32,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:55:32,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:55:32,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:55:32,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:55:32,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:55:32,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:55:32,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:55:32,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:55:32,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:55:32,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:55:32,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:55:32,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:55:32,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:55:32,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:55:32,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:55:32,103 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:55:32,104 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:55:32,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:55:32,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:55:32,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:55:32,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:55:32,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:55:32,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:55:32,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:55:32,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:55:32,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:55:32,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:55:32,127 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:55:32,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:55:32,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:55:32,130 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:55:32,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:55:32,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:55:32,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:55:32,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:55:32,174 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:55:32,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:55:32,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:55:32,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:55:32,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:55:32,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:55:32,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:55:32,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:55:32,176 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:55:32,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:55:32,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:55:32,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:55:32,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:55:32,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:55:32,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:55:32,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:55:32,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:55:32,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:55:32,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:55:32,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:55:32,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:55:32,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:55:32,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:55:32,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:55:32,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:55:32,567 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:55:32,568 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:55:32,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2020-12-22 05:55:32,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925eb1bb6/45c3256a918944e1b2cfa543d019618e/FLAGf0ee1990f [2020-12-22 05:55:33,482 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:55:33,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product19.cil.c [2020-12-22 05:55:33,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925eb1bb6/45c3256a918944e1b2cfa543d019618e/FLAGf0ee1990f [2020-12-22 05:55:33,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/925eb1bb6/45c3256a918944e1b2cfa543d019618e [2020-12-22 05:55:33,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:55:33,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:55:33,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:33,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:55:33,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:55:33,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:33" (1/1) ... [2020-12-22 05:55:33,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403753b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:33, skipping insertion in model container [2020-12-22 05:55:33,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:33" (1/1) ... [2020-12-22 05:55:33,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:55:33,769 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:55:34,225 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_spec14_product19.cil.c[48901,48914] [2020-12-22 05:55:34,302 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:34,325 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:55:34,563 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_spec14_product19.cil.c[48901,48914] [2020-12-22 05:55:34,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:34,687 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:55:34,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34 WrapperNode [2020-12-22 05:55:34,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:34,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:34,690 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:55:34,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:55:34,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (1/1) ... [2020-12-22 05:55:34,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (1/1) ... [2020-12-22 05:55:35,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:35,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:55:35,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:55:35,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:55:35,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (1/1) ... [2020-12-22 05:55:35,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (1/1) ... [2020-12-22 05:55:35,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (1/1) ... [2020-12-22 05:55:35,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (1/1) ... [2020-12-22 05:55:35,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (1/1) ... [2020-12-22 05:55:35,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (1/1) ... [2020-12-22 05:55:35,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (1/1) ... [2020-12-22 05:55:35,807 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:55:35,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:55:35,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:55:35,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:55:35,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (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 05:55:35,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:55:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:55:35,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:55:35,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:55:46,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:55:46,943 INFO L299 CfgBuilder]: Removed 1383 assume(true) statements. [2020-12-22 05:55:46,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:55:46 BoogieIcfgContainer [2020-12-22 05:55:46,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:55:46,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:55:46,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:55:46,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:55:46,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:55:33" (1/3) ... [2020-12-22 05:55:46,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6296da1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:55:46, skipping insertion in model container [2020-12-22 05:55:46,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:34" (2/3) ... [2020-12-22 05:55:46,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6296da1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:55:46, skipping insertion in model container [2020-12-22 05:55:46,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:55:46" (3/3) ... [2020-12-22 05:55:46,961 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product19.cil.c [2020-12-22 05:55:46,967 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:55:46,975 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:55:46,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:55:47,044 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:55:47,044 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:55:47,044 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:55:47,044 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:55:47,045 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:55:47,045 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:55:47,045 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:55:47,045 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:55:47,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5907 states. [2020-12-22 05:55:47,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:55:47,155 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:47,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:55:47,157 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 05:55:47,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:47,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1814038652, now seen corresponding path program 1 times [2020-12-22 05:55:47,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:47,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759892635] [2020-12-22 05:55:47,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:47,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:47,686 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 05:55:47,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759892635] [2020-12-22 05:55:47,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:47,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:47,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139779558] [2020-12-22 05:55:47,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:47,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:47,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:47,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:47,724 INFO L87 Difference]: Start difference. First operand 5907 states. Second operand 3 states. [2020-12-22 05:55:48,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:48,226 INFO L93 Difference]: Finished difference Result 14198 states and 26762 transitions. [2020-12-22 05:55:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:48,230 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 05:55:48,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:48,339 INFO L225 Difference]: With dead ends: 14198 [2020-12-22 05:55:48,340 INFO L226 Difference]: Without dead ends: 8295 [2020-12-22 05:55:48,366 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 05:55:48,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8295 states. [2020-12-22 05:55:48,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8295 to 5903. [2020-12-22 05:55:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5903 states. [2020-12-22 05:55:48,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5903 states to 5903 states and 11114 transitions. [2020-12-22 05:55:48,686 INFO L78 Accepts]: Start accepts. Automaton has 5903 states and 11114 transitions. Word has length 44 [2020-12-22 05:55:48,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:48,687 INFO L481 AbstractCegarLoop]: Abstraction has 5903 states and 11114 transitions. [2020-12-22 05:55:48,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:48,687 INFO L276 IsEmpty]: Start isEmpty. Operand 5903 states and 11114 transitions. [2020-12-22 05:55:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:55:48,693 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:48,693 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 05:55:48,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:55:48,695 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 05:55:48,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:48,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1234164848, now seen corresponding path program 1 times [2020-12-22 05:55:48,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:48,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275592572] [2020-12-22 05:55:48,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:48,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:48,893 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 05:55:48,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275592572] [2020-12-22 05:55:48,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:48,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:48,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027963928] [2020-12-22 05:55:48,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:48,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:48,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:48,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:48,899 INFO L87 Difference]: Start difference. First operand 5903 states and 11114 transitions. Second operand 4 states. [2020-12-22 05:55:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:49,631 INFO L93 Difference]: Finished difference Result 16479 states and 31026 transitions. [2020-12-22 05:55:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:49,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 05:55:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:49,696 INFO L225 Difference]: With dead ends: 16479 [2020-12-22 05:55:49,696 INFO L226 Difference]: Without dead ends: 10597 [2020-12-22 05:55:49,709 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 05:55:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10597 states. [2020-12-22 05:55:49,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10597 to 5879. [2020-12-22 05:55:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5879 states. [2020-12-22 05:55:50,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 11061 transitions. [2020-12-22 05:55:50,114 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 11061 transitions. Word has length 49 [2020-12-22 05:55:50,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:50,115 INFO L481 AbstractCegarLoop]: Abstraction has 5879 states and 11061 transitions. [2020-12-22 05:55:50,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:50,115 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 11061 transitions. [2020-12-22 05:55:50,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:55:50,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:50,121 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 05:55:50,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:55:50,122 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 05:55:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:50,126 INFO L82 PathProgramCache]: Analyzing trace with hash -396578672, now seen corresponding path program 1 times [2020-12-22 05:55:50,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:50,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84792708] [2020-12-22 05:55:50,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:50,262 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 05:55:50,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84792708] [2020-12-22 05:55:50,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:50,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:50,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113349221] [2020-12-22 05:55:50,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:50,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:50,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:50,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:50,264 INFO L87 Difference]: Start difference. First operand 5879 states and 11061 transitions. Second operand 4 states. [2020-12-22 05:55:51,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:51,065 INFO L93 Difference]: Finished difference Result 18814 states and 35406 transitions. [2020-12-22 05:55:51,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:51,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 05:55:51,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:51,140 INFO L225 Difference]: With dead ends: 18814 [2020-12-22 05:55:51,141 INFO L226 Difference]: Without dead ends: 12956 [2020-12-22 05:55:51,155 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 05:55:51,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12956 states. [2020-12-22 05:55:51,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12956 to 5879. [2020-12-22 05:55:51,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5879 states. [2020-12-22 05:55:51,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 11060 transitions. [2020-12-22 05:55:51,398 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 11060 transitions. Word has length 50 [2020-12-22 05:55:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:51,398 INFO L481 AbstractCegarLoop]: Abstraction has 5879 states and 11060 transitions. [2020-12-22 05:55:51,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:51,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 11060 transitions. [2020-12-22 05:55:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:55:51,401 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:51,402 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 05:55:51,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:55:51,402 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 05:55:51,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:51,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1994651629, now seen corresponding path program 1 times [2020-12-22 05:55:51,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:51,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973059794] [2020-12-22 05:55:51,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:51,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:51,478 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 05:55:51,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973059794] [2020-12-22 05:55:51,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:51,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:51,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053640176] [2020-12-22 05:55:51,480 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:51,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:51,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:51,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:51,481 INFO L87 Difference]: Start difference. First operand 5879 states and 11060 transitions. Second operand 4 states. [2020-12-22 05:55:51,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:51,999 INFO L93 Difference]: Finished difference Result 14102 states and 26541 transitions. [2020-12-22 05:55:52,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:52,000 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 05:55:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:52,024 INFO L225 Difference]: With dead ends: 14102 [2020-12-22 05:55:52,024 INFO L226 Difference]: Without dead ends: 8244 [2020-12-22 05:55:52,036 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 05:55:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2020-12-22 05:55:52,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 5879. [2020-12-22 05:55:52,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5879 states. [2020-12-22 05:55:52,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 11054 transitions. [2020-12-22 05:55:52,258 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 11054 transitions. Word has length 51 [2020-12-22 05:55:52,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:52,259 INFO L481 AbstractCegarLoop]: Abstraction has 5879 states and 11054 transitions. [2020-12-22 05:55:52,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:52,259 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 11054 transitions. [2020-12-22 05:55:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:55:52,261 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:52,261 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 05:55:52,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:55:52,262 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 05:55:52,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:52,263 INFO L82 PathProgramCache]: Analyzing trace with hash 42164149, now seen corresponding path program 1 times [2020-12-22 05:55:52,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:52,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548149642] [2020-12-22 05:55:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:52,356 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 05:55:52,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548149642] [2020-12-22 05:55:52,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:52,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:52,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406687220] [2020-12-22 05:55:52,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:52,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:52,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:52,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:52,359 INFO L87 Difference]: Start difference. First operand 5879 states and 11054 transitions. Second operand 4 states. [2020-12-22 05:55:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:52,914 INFO L93 Difference]: Finished difference Result 14102 states and 26529 transitions. [2020-12-22 05:55:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:52,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 05:55:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:52,945 INFO L225 Difference]: With dead ends: 14102 [2020-12-22 05:55:52,946 INFO L226 Difference]: Without dead ends: 8244 [2020-12-22 05:55:52,956 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 05:55:52,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2020-12-22 05:55:53,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 5879. [2020-12-22 05:55:53,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5879 states. [2020-12-22 05:55:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 11048 transitions. [2020-12-22 05:55:53,183 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 11048 transitions. Word has length 52 [2020-12-22 05:55:53,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:53,184 INFO L481 AbstractCegarLoop]: Abstraction has 5879 states and 11048 transitions. [2020-12-22 05:55:53,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:53,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 11048 transitions. [2020-12-22 05:55:53,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 05:55:53,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:53,188 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] [2020-12-22 05:55:53,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:55:53,189 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 05:55:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:53,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1203586280, now seen corresponding path program 1 times [2020-12-22 05:55:53,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:53,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903028019] [2020-12-22 05:55:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:53,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:53,329 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 05:55:53,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903028019] [2020-12-22 05:55:53,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:53,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:53,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083101653] [2020-12-22 05:55:53,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:53,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:53,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:53,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:53,332 INFO L87 Difference]: Start difference. First operand 5879 states and 11048 transitions. Second operand 4 states. [2020-12-22 05:55:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:53,812 INFO L93 Difference]: Finished difference Result 14102 states and 26517 transitions. [2020-12-22 05:55:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:53,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 05:55:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:53,835 INFO L225 Difference]: With dead ends: 14102 [2020-12-22 05:55:53,836 INFO L226 Difference]: Without dead ends: 8244 [2020-12-22 05:55:53,846 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 05:55:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2020-12-22 05:55:54,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 5879. [2020-12-22 05:55:54,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5879 states. [2020-12-22 05:55:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 11042 transitions. [2020-12-22 05:55:54,036 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 11042 transitions. Word has length 53 [2020-12-22 05:55:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:54,036 INFO L481 AbstractCegarLoop]: Abstraction has 5879 states and 11042 transitions. [2020-12-22 05:55:54,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 11042 transitions. [2020-12-22 05:55:54,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 05:55:54,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:54,039 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 05:55:54,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:55:54,041 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 05:55:54,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:54,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1129674022, now seen corresponding path program 1 times [2020-12-22 05:55:54,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:54,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173330701] [2020-12-22 05:55:54,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:54,142 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 05:55:54,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173330701] [2020-12-22 05:55:54,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:54,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:54,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393159534] [2020-12-22 05:55:54,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:54,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:54,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:54,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:54,146 INFO L87 Difference]: Start difference. First operand 5879 states and 11042 transitions. Second operand 4 states. [2020-12-22 05:55:54,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:54,662 INFO L93 Difference]: Finished difference Result 14102 states and 26505 transitions. [2020-12-22 05:55:54,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:54,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 05:55:54,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:54,695 INFO L225 Difference]: With dead ends: 14102 [2020-12-22 05:55:54,695 INFO L226 Difference]: Without dead ends: 8244 [2020-12-22 05:55:54,706 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 05:55:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8244 states. [2020-12-22 05:55:54,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8244 to 5879. [2020-12-22 05:55:54,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5879 states. [2020-12-22 05:55:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 11036 transitions. [2020-12-22 05:55:54,921 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 11036 transitions. Word has length 54 [2020-12-22 05:55:54,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:54,921 INFO L481 AbstractCegarLoop]: Abstraction has 5879 states and 11036 transitions. [2020-12-22 05:55:54,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 11036 transitions. [2020-12-22 05:55:54,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:55:54,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:54,924 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] [2020-12-22 05:55:54,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:55:54,924 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 05:55:54,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:54,925 INFO L82 PathProgramCache]: Analyzing trace with hash 355070367, now seen corresponding path program 1 times [2020-12-22 05:55:54,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:54,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923618317] [2020-12-22 05:55:54,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:55,017 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 05:55:55,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923618317] [2020-12-22 05:55:55,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:55,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:55,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371617892] [2020-12-22 05:55:55,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:55,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:55,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:55,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:55,020 INFO L87 Difference]: Start difference. First operand 5879 states and 11036 transitions. Second operand 3 states. [2020-12-22 05:55:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:55,356 INFO L93 Difference]: Finished difference Result 14093 states and 26482 transitions. [2020-12-22 05:55:55,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:55,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 05:55:55,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:55,391 INFO L225 Difference]: With dead ends: 14093 [2020-12-22 05:55:55,392 INFO L226 Difference]: Without dead ends: 8235 [2020-12-22 05:55:55,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8235 states. [2020-12-22 05:55:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8235 to 5879. [2020-12-22 05:55:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5879 states. [2020-12-22 05:55:55,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5879 states to 5879 states and 11035 transitions. [2020-12-22 05:55:55,702 INFO L78 Accepts]: Start accepts. Automaton has 5879 states and 11035 transitions. Word has length 55 [2020-12-22 05:55:55,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:55,703 INFO L481 AbstractCegarLoop]: Abstraction has 5879 states and 11035 transitions. [2020-12-22 05:55:55,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5879 states and 11035 transitions. [2020-12-22 05:55:55,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:55:55,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:55,705 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] [2020-12-22 05:55:55,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:55:55,706 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 05:55:55,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:55,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1199075869, now seen corresponding path program 1 times [2020-12-22 05:55:55,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:55,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640034804] [2020-12-22 05:55:55,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:55,786 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 05:55:55,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640034804] [2020-12-22 05:55:55,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:55,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:55,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502084063] [2020-12-22 05:55:55,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:55,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:55,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:55,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:55,796 INFO L87 Difference]: Start difference. First operand 5879 states and 11035 transitions. Second operand 4 states. [2020-12-22 05:55:56,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:56,251 INFO L93 Difference]: Finished difference Result 16437 states and 30891 transitions. [2020-12-22 05:55:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:56,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 05:55:56,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:56,281 INFO L225 Difference]: With dead ends: 16437 [2020-12-22 05:55:56,281 INFO L226 Difference]: Without dead ends: 10585 [2020-12-22 05:55:56,292 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 05:55:56,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10585 states. [2020-12-22 05:55:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10585 to 5881. [2020-12-22 05:55:56,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5881 states. [2020-12-22 05:55:56,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 11036 transitions. [2020-12-22 05:55:56,517 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 11036 transitions. Word has length 55 [2020-12-22 05:55:56,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:56,517 INFO L481 AbstractCegarLoop]: Abstraction has 5881 states and 11036 transitions. [2020-12-22 05:55:56,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:56,517 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 11036 transitions. [2020-12-22 05:55:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 05:55:56,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:56,520 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 05:55:56,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:55:56,520 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 05:55:56,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:56,521 INFO L82 PathProgramCache]: Analyzing trace with hash 136095439, now seen corresponding path program 1 times [2020-12-22 05:55:56,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:56,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921400560] [2020-12-22 05:55:56,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:56,722 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 05:55:56,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921400560] [2020-12-22 05:55:56,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:56,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:56,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370519658] [2020-12-22 05:55:56,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:56,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:56,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:56,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:56,726 INFO L87 Difference]: Start difference. First operand 5881 states and 11036 transitions. Second operand 4 states. [2020-12-22 05:55:59,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:59,228 INFO L93 Difference]: Finished difference Result 16329 states and 30800 transitions. [2020-12-22 05:55:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:55:59,229 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 05:55:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:59,258 INFO L225 Difference]: With dead ends: 16329 [2020-12-22 05:55:59,258 INFO L226 Difference]: Without dead ends: 10481 [2020-12-22 05:55:59,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:59,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2020-12-22 05:55:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 5881. [2020-12-22 05:55:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5881 states. [2020-12-22 05:55:59,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 11016 transitions. [2020-12-22 05:55:59,510 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 11016 transitions. Word has length 56 [2020-12-22 05:55:59,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:59,510 INFO L481 AbstractCegarLoop]: Abstraction has 5881 states and 11016 transitions. [2020-12-22 05:55:59,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:59,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 11016 transitions. [2020-12-22 05:55:59,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:55:59,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:59,513 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 05:55:59,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:55:59,513 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 05:55:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:59,514 INFO L82 PathProgramCache]: Analyzing trace with hash -284392923, now seen corresponding path program 1 times [2020-12-22 05:55:59,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:59,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727321809] [2020-12-22 05:55:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:59,595 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 05:55:59,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727321809] [2020-12-22 05:55:59,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:59,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:59,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297514515] [2020-12-22 05:55:59,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:59,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:59,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:59,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:59,597 INFO L87 Difference]: Start difference. First operand 5881 states and 11016 transitions. Second operand 4 states. [2020-12-22 05:56:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:01,958 INFO L93 Difference]: Finished difference Result 16329 states and 30761 transitions. [2020-12-22 05:56:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:01,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 05:56:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:01,987 INFO L225 Difference]: With dead ends: 16329 [2020-12-22 05:56:01,987 INFO L226 Difference]: Without dead ends: 10481 [2020-12-22 05:56:01,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:02,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2020-12-22 05:56:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 5881. [2020-12-22 05:56:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5881 states. [2020-12-22 05:56:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 10996 transitions. [2020-12-22 05:56:02,238 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 10996 transitions. Word has length 59 [2020-12-22 05:56:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:02,239 INFO L481 AbstractCegarLoop]: Abstraction has 5881 states and 10996 transitions. [2020-12-22 05:56:02,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 10996 transitions. [2020-12-22 05:56:02,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:56:02,241 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:02,242 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] [2020-12-22 05:56:02,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:56:02,242 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 05:56:02,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:02,243 INFO L82 PathProgramCache]: Analyzing trace with hash 2090242100, now seen corresponding path program 1 times [2020-12-22 05:56:02,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:02,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75824100] [2020-12-22 05:56:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:02,324 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 05:56:02,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75824100] [2020-12-22 05:56:02,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:02,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:02,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189972581] [2020-12-22 05:56:02,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:02,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:02,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:02,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:02,327 INFO L87 Difference]: Start difference. First operand 5881 states and 10996 transitions. Second operand 4 states. [2020-12-22 05:56:04,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:04,700 INFO L93 Difference]: Finished difference Result 16329 states and 30722 transitions. [2020-12-22 05:56:04,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:04,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:56:04,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:04,741 INFO L225 Difference]: With dead ends: 16329 [2020-12-22 05:56:04,741 INFO L226 Difference]: Without dead ends: 10481 [2020-12-22 05:56:04,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2020-12-22 05:56:05,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 5881. [2020-12-22 05:56:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5881 states. [2020-12-22 05:56:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 10976 transitions. [2020-12-22 05:56:05,031 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 10976 transitions. Word has length 62 [2020-12-22 05:56:05,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:05,031 INFO L481 AbstractCegarLoop]: Abstraction has 5881 states and 10976 transitions. [2020-12-22 05:56:05,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 10976 transitions. [2020-12-22 05:56:05,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 05:56:05,035 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:05,035 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] [2020-12-22 05:56:05,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:56:05,035 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 05:56:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:05,036 INFO L82 PathProgramCache]: Analyzing trace with hash 60860736, now seen corresponding path program 1 times [2020-12-22 05:56:05,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:05,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142780458] [2020-12-22 05:56:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:05,172 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 05:56:05,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142780458] [2020-12-22 05:56:05,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:05,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:05,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362880599] [2020-12-22 05:56:05,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:05,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:05,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:05,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:05,175 INFO L87 Difference]: Start difference. First operand 5881 states and 10976 transitions. Second operand 4 states. [2020-12-22 05:56:07,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:07,915 INFO L93 Difference]: Finished difference Result 16329 states and 30683 transitions. [2020-12-22 05:56:07,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:56:07,916 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 05:56:07,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:07,947 INFO L225 Difference]: With dead ends: 16329 [2020-12-22 05:56:07,947 INFO L226 Difference]: Without dead ends: 10481 [2020-12-22 05:56:07,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10481 states. [2020-12-22 05:56:08,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10481 to 5881. [2020-12-22 05:56:08,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5881 states. [2020-12-22 05:56:08,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5881 states to 5881 states and 10956 transitions. [2020-12-22 05:56:08,350 INFO L78 Accepts]: Start accepts. Automaton has 5881 states and 10956 transitions. Word has length 65 [2020-12-22 05:56:08,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:08,353 INFO L481 AbstractCegarLoop]: Abstraction has 5881 states and 10956 transitions. [2020-12-22 05:56:08,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:08,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5881 states and 10956 transitions. [2020-12-22 05:56:08,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:56:08,357 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:08,358 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] [2020-12-22 05:56:08,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:56:08,358 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 05:56:08,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:08,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1211445735, now seen corresponding path program 1 times [2020-12-22 05:56:08,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:08,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761624170] [2020-12-22 05:56:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:08,460 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 05:56:08,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761624170] [2020-12-22 05:56:08,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:08,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:08,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674788517] [2020-12-22 05:56:08,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:56:08,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:08,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:56:08,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:56:08,463 INFO L87 Difference]: Start difference. First operand 5881 states and 10956 transitions. Second operand 6 states. [2020-12-22 05:56:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:17,202 INFO L93 Difference]: Finished difference Result 62470 states and 117377 transitions. [2020-12-22 05:56:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:56:17,202 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-22 05:56:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:17,314 INFO L225 Difference]: With dead ends: 62470 [2020-12-22 05:56:17,315 INFO L226 Difference]: Without dead ends: 56640 [2020-12-22 05:56:17,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:56:17,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56640 states. [2020-12-22 05:56:18,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56640 to 11655. [2020-12-22 05:56:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11655 states. [2020-12-22 05:56:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11655 states to 11655 states and 21736 transitions. [2020-12-22 05:56:18,456 INFO L78 Accepts]: Start accepts. Automaton has 11655 states and 21736 transitions. Word has length 68 [2020-12-22 05:56:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:18,456 INFO L481 AbstractCegarLoop]: Abstraction has 11655 states and 21736 transitions. [2020-12-22 05:56:18,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 11655 states and 21736 transitions. [2020-12-22 05:56:18,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 05:56:18,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:18,461 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] [2020-12-22 05:56:18,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:56:18,462 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 05:56:18,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:18,462 INFO L82 PathProgramCache]: Analyzing trace with hash -481724487, now seen corresponding path program 1 times [2020-12-22 05:56:18,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:18,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717751465] [2020-12-22 05:56:18,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:18,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:18,526 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 05:56:18,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717751465] [2020-12-22 05:56:18,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:18,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:18,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452295796] [2020-12-22 05:56:18,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:18,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:18,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:18,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:18,528 INFO L87 Difference]: Start difference. First operand 11655 states and 21736 transitions. Second operand 5 states. [2020-12-22 05:56:25,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:25,273 INFO L93 Difference]: Finished difference Result 61130 states and 113770 transitions. [2020-12-22 05:56:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:25,274 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 05:56:25,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:25,385 INFO L225 Difference]: With dead ends: 61130 [2020-12-22 05:56:25,385 INFO L226 Difference]: Without dead ends: 49567 [2020-12-22 05:56:25,425 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 05:56:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49567 states. [2020-12-22 05:56:26,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49567 to 16361. [2020-12-22 05:56:26,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16361 states. [2020-12-22 05:56:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16361 states to 16361 states and 30496 transitions. [2020-12-22 05:56:26,618 INFO L78 Accepts]: Start accepts. Automaton has 16361 states and 30496 transitions. Word has length 70 [2020-12-22 05:56:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:26,619 INFO L481 AbstractCegarLoop]: Abstraction has 16361 states and 30496 transitions. [2020-12-22 05:56:26,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 16361 states and 30496 transitions. [2020-12-22 05:56:26,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:56:26,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:26,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:26,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:56:26,624 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 05:56:26,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:26,625 INFO L82 PathProgramCache]: Analyzing trace with hash -821589140, now seen corresponding path program 1 times [2020-12-22 05:56:26,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:26,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953064111] [2020-12-22 05:56:26,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:26,685 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 05:56:26,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953064111] [2020-12-22 05:56:26,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:26,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:26,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047473596] [2020-12-22 05:56:26,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:26,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:26,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:26,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:26,688 INFO L87 Difference]: Start difference. First operand 16361 states and 30496 transitions. Second operand 4 states. [2020-12-22 05:56:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:32,363 INFO L93 Difference]: Finished difference Result 66925 states and 125212 transitions. [2020-12-22 05:56:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:32,363 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-22 05:56:32,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:32,438 INFO L225 Difference]: With dead ends: 66925 [2020-12-22 05:56:32,438 INFO L226 Difference]: Without dead ends: 50617 [2020-12-22 05:56:32,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 05:56:32,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50617 states. [2020-12-22 05:56:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50617 to 28007. [2020-12-22 05:56:33,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28007 states. [2020-12-22 05:56:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28007 states to 28007 states and 51680 transitions. [2020-12-22 05:56:33,831 INFO L78 Accepts]: Start accepts. Automaton has 28007 states and 51680 transitions. Word has length 71 [2020-12-22 05:56:33,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:33,831 INFO L481 AbstractCegarLoop]: Abstraction has 28007 states and 51680 transitions. [2020-12-22 05:56:33,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:33,831 INFO L276 IsEmpty]: Start isEmpty. Operand 28007 states and 51680 transitions. [2020-12-22 05:56:33,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:56:33,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:33,836 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] [2020-12-22 05:56:33,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:56:33,836 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 05:56:33,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:33,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1922195983, now seen corresponding path program 1 times [2020-12-22 05:56:33,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:33,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790887715] [2020-12-22 05:56:33,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:33,895 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 05:56:33,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790887715] [2020-12-22 05:56:33,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:33,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:33,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584681299] [2020-12-22 05:56:33,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:33,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:33,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:33,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:33,897 INFO L87 Difference]: Start difference. First operand 28007 states and 51680 transitions. Second operand 5 states. [2020-12-22 05:56:35,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:35,566 INFO L93 Difference]: Finished difference Result 59120 states and 109184 transitions. [2020-12-22 05:56:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:56:35,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 05:56:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:35,608 INFO L225 Difference]: With dead ends: 59120 [2020-12-22 05:56:35,609 INFO L226 Difference]: Without dead ends: 31137 [2020-12-22 05:56:35,635 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 05:56:35,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31137 states. [2020-12-22 05:56:36,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31137 to 18261. [2020-12-22 05:56:36,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18261 states. [2020-12-22 05:56:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18261 states to 18261 states and 33712 transitions. [2020-12-22 05:56:36,444 INFO L78 Accepts]: Start accepts. Automaton has 18261 states and 33712 transitions. Word has length 71 [2020-12-22 05:56:36,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:36,444 INFO L481 AbstractCegarLoop]: Abstraction has 18261 states and 33712 transitions. [2020-12-22 05:56:36,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:36,444 INFO L276 IsEmpty]: Start isEmpty. Operand 18261 states and 33712 transitions. [2020-12-22 05:56:36,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:56:36,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:36,446 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] [2020-12-22 05:56:36,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:56:36,446 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 05:56:36,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:36,447 INFO L82 PathProgramCache]: Analyzing trace with hash -852217116, now seen corresponding path program 1 times [2020-12-22 05:56:36,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:36,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988929366] [2020-12-22 05:56:36,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:36,509 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 05:56:36,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988929366] [2020-12-22 05:56:36,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:36,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:36,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374430961] [2020-12-22 05:56:36,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:36,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:36,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:36,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:36,511 INFO L87 Difference]: Start difference. First operand 18261 states and 33712 transitions. Second operand 5 states. [2020-12-22 05:56:42,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:42,013 INFO L93 Difference]: Finished difference Result 148170 states and 273995 transitions. [2020-12-22 05:56:42,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:42,014 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-22 05:56:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:42,241 INFO L225 Difference]: With dead ends: 148170 [2020-12-22 05:56:42,241 INFO L226 Difference]: Without dead ends: 129952 [2020-12-22 05:56:42,278 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 05:56:42,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129952 states. [2020-12-22 05:56:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129952 to 35429. [2020-12-22 05:56:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35429 states. [2020-12-22 05:56:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35429 states to 35429 states and 65375 transitions. [2020-12-22 05:56:44,794 INFO L78 Accepts]: Start accepts. Automaton has 35429 states and 65375 transitions. Word has length 73 [2020-12-22 05:56:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:44,794 INFO L481 AbstractCegarLoop]: Abstraction has 35429 states and 65375 transitions. [2020-12-22 05:56:44,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 35429 states and 65375 transitions. [2020-12-22 05:56:44,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:56:44,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:44,797 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] [2020-12-22 05:56:44,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:56:44,797 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 05:56:44,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:44,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1696222618, now seen corresponding path program 1 times [2020-12-22 05:56:44,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:44,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77633747] [2020-12-22 05:56:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:44,881 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 05:56:44,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77633747] [2020-12-22 05:56:44,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:44,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:44,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410896145] [2020-12-22 05:56:44,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:56:44,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:44,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:56:44,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:56:44,884 INFO L87 Difference]: Start difference. First operand 35429 states and 65375 transitions. Second operand 6 states. [2020-12-22 05:56:51,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:51,142 INFO L93 Difference]: Finished difference Result 103023 states and 191301 transitions. [2020-12-22 05:56:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:56:51,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-12-22 05:56:51,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:51,269 INFO L225 Difference]: With dead ends: 103023 [2020-12-22 05:56:51,269 INFO L226 Difference]: Without dead ends: 83867 [2020-12-22 05:56:51,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:56:51,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83867 states. [2020-12-22 05:56:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83867 to 35429. [2020-12-22 05:56:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35429 states. [2020-12-22 05:56:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35429 states to 35429 states and 65327 transitions. [2020-12-22 05:56:53,449 INFO L78 Accepts]: Start accepts. Automaton has 35429 states and 65327 transitions. Word has length 73 [2020-12-22 05:56:53,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:53,449 INFO L481 AbstractCegarLoop]: Abstraction has 35429 states and 65327 transitions. [2020-12-22 05:56:53,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:53,450 INFO L276 IsEmpty]: Start isEmpty. Operand 35429 states and 65327 transitions. [2020-12-22 05:56:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:56:53,452 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:53,452 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] [2020-12-22 05:56:53,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:56:53,452 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 05:56:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:53,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1324389536, now seen corresponding path program 1 times [2020-12-22 05:56:53,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:53,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824968809] [2020-12-22 05:56:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:53,517 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 05:56:53,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824968809] [2020-12-22 05:56:53,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:53,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:53,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610262437] [2020-12-22 05:56:53,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:53,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:53,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:53,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:53,519 INFO L87 Difference]: Start difference. First operand 35429 states and 65327 transitions. Second operand 5 states. [2020-12-22 05:56:58,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:58,484 INFO L93 Difference]: Finished difference Result 135631 states and 250763 transitions. [2020-12-22 05:56:58,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:58,485 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 05:56:58,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:58,677 INFO L225 Difference]: With dead ends: 135631 [2020-12-22 05:56:58,677 INFO L226 Difference]: Without dead ends: 116472 [2020-12-22 05:56:58,715 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 05:56:58,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116472 states. [2020-12-22 05:57:01,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116472 to 53217. [2020-12-22 05:57:01,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53217 states. [2020-12-22 05:57:01,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53217 states to 53217 states and 97968 transitions. [2020-12-22 05:57:01,857 INFO L78 Accepts]: Start accepts. Automaton has 53217 states and 97968 transitions. Word has length 75 [2020-12-22 05:57:01,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:01,857 INFO L481 AbstractCegarLoop]: Abstraction has 53217 states and 97968 transitions. [2020-12-22 05:57:01,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:01,857 INFO L276 IsEmpty]: Start isEmpty. Operand 53217 states and 97968 transitions. [2020-12-22 05:57:01,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-22 05:57:01,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:01,859 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] [2020-12-22 05:57:01,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:57:01,860 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 05:57:01,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:01,860 INFO L82 PathProgramCache]: Analyzing trace with hash -2050122868, now seen corresponding path program 1 times [2020-12-22 05:57:01,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:01,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481426027] [2020-12-22 05:57:01,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:01,935 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 05:57:01,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481426027] [2020-12-22 05:57:01,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:01,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:01,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608137277] [2020-12-22 05:57:01,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:01,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:01,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:01,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:01,937 INFO L87 Difference]: Start difference. First operand 53217 states and 97968 transitions. Second operand 5 states. [2020-12-22 05:57:06,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:06,379 INFO L93 Difference]: Finished difference Result 127441 states and 233675 transitions. [2020-12-22 05:57:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:57:06,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 77 [2020-12-22 05:57:06,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:06,515 INFO L225 Difference]: With dead ends: 127441 [2020-12-22 05:57:06,515 INFO L226 Difference]: Without dead ends: 91681 [2020-12-22 05:57:06,549 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 05:57:06,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91681 states. [2020-12-22 05:57:09,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91681 to 53328. [2020-12-22 05:57:09,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53328 states. [2020-12-22 05:57:09,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53328 states to 53328 states and 98049 transitions. [2020-12-22 05:57:09,553 INFO L78 Accepts]: Start accepts. Automaton has 53328 states and 98049 transitions. Word has length 77 [2020-12-22 05:57:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:09,553 INFO L481 AbstractCegarLoop]: Abstraction has 53328 states and 98049 transitions. [2020-12-22 05:57:09,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:09,553 INFO L276 IsEmpty]: Start isEmpty. Operand 53328 states and 98049 transitions. [2020-12-22 05:57:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 05:57:09,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:09,556 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 05:57:09,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:57:09,556 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 05:57:09,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:09,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1072843900, now seen corresponding path program 1 times [2020-12-22 05:57:09,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:09,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138879675] [2020-12-22 05:57:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:09,631 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 05:57:09,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138879675] [2020-12-22 05:57:09,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:09,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:09,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881881797] [2020-12-22 05:57:09,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:09,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:09,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:09,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:09,633 INFO L87 Difference]: Start difference. First operand 53328 states and 98049 transitions. Second operand 5 states. [2020-12-22 05:57:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:18,002 INFO L93 Difference]: Finished difference Result 171641 states and 318135 transitions. [2020-12-22 05:57:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:57:18,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-12-22 05:57:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:18,240 INFO L225 Difference]: With dead ends: 171641 [2020-12-22 05:57:18,240 INFO L226 Difference]: Without dead ends: 128520 [2020-12-22 05:57:18,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 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 05:57:18,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128520 states. [2020-12-22 05:57:21,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128520 to 53328. [2020-12-22 05:57:21,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53328 states. [2020-12-22 05:57:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53328 states to 53328 states and 97397 transitions. [2020-12-22 05:57:21,460 INFO L78 Accepts]: Start accepts. Automaton has 53328 states and 97397 transitions. Word has length 84 [2020-12-22 05:57:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:21,460 INFO L481 AbstractCegarLoop]: Abstraction has 53328 states and 97397 transitions. [2020-12-22 05:57:21,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:21,460 INFO L276 IsEmpty]: Start isEmpty. Operand 53328 states and 97397 transitions. [2020-12-22 05:57:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 05:57:21,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:21,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:57:21,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:57:21,463 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 05:57:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:21,464 INFO L82 PathProgramCache]: Analyzing trace with hash 2098749639, now seen corresponding path program 1 times [2020-12-22 05:57:21,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:21,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337918630] [2020-12-22 05:57:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:21,546 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 05:57:21,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337918630] [2020-12-22 05:57:21,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:21,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:57:21,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267363842] [2020-12-22 05:57:21,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:57:21,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:21,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:57:21,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:57:21,548 INFO L87 Difference]: Start difference. First operand 53328 states and 97397 transitions. Second operand 6 states. [2020-12-22 05:57:26,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:26,473 INFO L93 Difference]: Finished difference Result 124697 states and 227349 transitions. [2020-12-22 05:57:26,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:57:26,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 05:57:26,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:26,613 INFO L225 Difference]: With dead ends: 124697 [2020-12-22 05:57:26,613 INFO L226 Difference]: Without dead ends: 86976 [2020-12-22 05:57:26,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:57:26,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86976 states. [2020-12-22 05:57:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86976 to 53328. [2020-12-22 05:57:29,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53328 states. [2020-12-22 05:57:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53328 states to 53328 states and 96676 transitions. [2020-12-22 05:57:29,700 INFO L78 Accepts]: Start accepts. Automaton has 53328 states and 96676 transitions. Word has length 84 [2020-12-22 05:57:29,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:29,700 INFO L481 AbstractCegarLoop]: Abstraction has 53328 states and 96676 transitions. [2020-12-22 05:57:29,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:57:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 53328 states and 96676 transitions. [2020-12-22 05:57:29,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:57:29,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:29,703 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] [2020-12-22 05:57:29,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:57:29,703 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 05:57:29,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:29,703 INFO L82 PathProgramCache]: Analyzing trace with hash -2134672025, now seen corresponding path program 1 times [2020-12-22 05:57:29,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:29,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650128358] [2020-12-22 05:57:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:29,776 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 05:57:29,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650128358] [2020-12-22 05:57:29,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:29,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:29,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370595731] [2020-12-22 05:57:29,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:29,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:29,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:29,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:29,778 INFO L87 Difference]: Start difference. First operand 53328 states and 96676 transitions. Second operand 5 states. [2020-12-22 05:57:34,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:34,556 INFO L93 Difference]: Finished difference Result 113064 states and 204859 transitions. [2020-12-22 05:57:34,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:57:34,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 05:57:34,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:34,699 INFO L225 Difference]: With dead ends: 113064 [2020-12-22 05:57:34,699 INFO L226 Difference]: Without dead ends: 79612 [2020-12-22 05:57:34,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 05:57:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79612 states. [2020-12-22 05:57:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79612 to 53328. [2020-12-22 05:57:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53328 states. [2020-12-22 05:57:37,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53328 states to 53328 states and 96580 transitions. [2020-12-22 05:57:37,757 INFO L78 Accepts]: Start accepts. Automaton has 53328 states and 96580 transitions. Word has length 85 [2020-12-22 05:57:37,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:37,757 INFO L481 AbstractCegarLoop]: Abstraction has 53328 states and 96580 transitions. [2020-12-22 05:57:37,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:37,757 INFO L276 IsEmpty]: Start isEmpty. Operand 53328 states and 96580 transitions. [2020-12-22 05:57:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:57:37,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:37,760 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] [2020-12-22 05:57:37,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:57:37,760 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 05:57:37,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:37,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1139226917, now seen corresponding path program 1 times [2020-12-22 05:57:37,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:37,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99174363] [2020-12-22 05:57:37,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:37,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:37,841 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 05:57:37,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99174363] [2020-12-22 05:57:37,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:37,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:37,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132173385] [2020-12-22 05:57:37,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:57:37,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:37,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:57:37,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:57:37,843 INFO L87 Difference]: Start difference. First operand 53328 states and 96580 transitions. Second operand 6 states. [2020-12-22 05:57:47,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:47,424 INFO L93 Difference]: Finished difference Result 200853 states and 367989 transitions. [2020-12-22 05:57:47,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:57:47,424 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 05:57:47,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:47,565 INFO L225 Difference]: With dead ends: 200853 [2020-12-22 05:57:47,566 INFO L226 Difference]: Without dead ends: 83806 [2020-12-22 05:57:47,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:57:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83806 states. [2020-12-22 05:57:49,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83806 to 27082. [2020-12-22 05:57:49,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27082 states. [2020-12-22 05:57:49,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27082 states to 27082 states and 48911 transitions. [2020-12-22 05:57:49,578 INFO L78 Accepts]: Start accepts. Automaton has 27082 states and 48911 transitions. Word has length 85 [2020-12-22 05:57:49,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:49,578 INFO L481 AbstractCegarLoop]: Abstraction has 27082 states and 48911 transitions. [2020-12-22 05:57:49,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:57:49,578 INFO L276 IsEmpty]: Start isEmpty. Operand 27082 states and 48911 transitions. [2020-12-22 05:57:49,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-12-22 05:57:49,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:49,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:57:49,602 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 05:57:49,602 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:49,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:49,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1407318019, now seen corresponding path program 1 times [2020-12-22 05:57:49,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:49,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306039364] [2020-12-22 05:57:49,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:49,736 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 05:57:49,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306039364] [2020-12-22 05:57:49,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:49,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:49,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452890579] [2020-12-22 05:57:49,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:49,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:49,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:49,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:49,738 INFO L87 Difference]: Start difference. First operand 27082 states and 48911 transitions. Second operand 5 states. [2020-12-22 05:57:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:53,768 INFO L93 Difference]: Finished difference Result 72295 states and 131573 transitions. [2020-12-22 05:57:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:57:53,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-12-22 05:57:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:53,825 INFO L225 Difference]: With dead ends: 72295 [2020-12-22 05:57:53,826 INFO L226 Difference]: Without dead ends: 45243 [2020-12-22 05:57:53,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:57:53,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45243 states. [2020-12-22 05:57:55,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45243 to 26926. [2020-12-22 05:57:55,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26926 states. [2020-12-22 05:57:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26926 states to 26926 states and 48343 transitions. [2020-12-22 05:57:55,260 INFO L78 Accepts]: Start accepts. Automaton has 26926 states and 48343 transitions. Word has length 230 [2020-12-22 05:57:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:55,260 INFO L481 AbstractCegarLoop]: Abstraction has 26926 states and 48343 transitions. [2020-12-22 05:57:55,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 26926 states and 48343 transitions. [2020-12-22 05:57:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-12-22 05:57:55,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:55,285 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:57:55,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 05:57:55,285 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:55,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:55,286 INFO L82 PathProgramCache]: Analyzing trace with hash 973699005, now seen corresponding path program 1 times [2020-12-22 05:57:55,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:55,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827179113] [2020-12-22 05:57:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:55,623 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 05:57:55,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827179113] [2020-12-22 05:57:55,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:55,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:57:55,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960418215] [2020-12-22 05:57:55,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:55,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:55,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:55,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:55,625 INFO L87 Difference]: Start difference. First operand 26926 states and 48343 transitions. Second operand 5 states. [2020-12-22 05:58:02,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:02,432 INFO L93 Difference]: Finished difference Result 66308 states and 120003 transitions. [2020-12-22 05:58:02,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:58:02,433 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 230 [2020-12-22 05:58:02,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:02,513 INFO L225 Difference]: With dead ends: 66308 [2020-12-22 05:58:02,513 INFO L226 Difference]: Without dead ends: 51059 [2020-12-22 05:58:02,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51059 states. [2020-12-22 05:58:04,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51059 to 39119. [2020-12-22 05:58:04,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39119 states. [2020-12-22 05:58:04,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39119 states to 39119 states and 70748 transitions. [2020-12-22 05:58:04,710 INFO L78 Accepts]: Start accepts. Automaton has 39119 states and 70748 transitions. Word has length 230 [2020-12-22 05:58:04,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:04,711 INFO L481 AbstractCegarLoop]: Abstraction has 39119 states and 70748 transitions. [2020-12-22 05:58:04,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:04,711 INFO L276 IsEmpty]: Start isEmpty. Operand 39119 states and 70748 transitions. [2020-12-22 05:58:04,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-12-22 05:58:04,744 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:04,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:04,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 05:58:04,745 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:04,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:04,746 INFO L82 PathProgramCache]: Analyzing trace with hash 734331178, now seen corresponding path program 1 times [2020-12-22 05:58:04,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:04,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338172624] [2020-12-22 05:58:04,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:04,912 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 05:58:04,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338172624] [2020-12-22 05:58:04,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:04,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:04,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074556327] [2020-12-22 05:58:04,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:04,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:04,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:04,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:04,914 INFO L87 Difference]: Start difference. First operand 39119 states and 70748 transitions. Second operand 5 states. [2020-12-22 05:58:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:12,896 INFO L93 Difference]: Finished difference Result 114504 states and 209308 transitions. [2020-12-22 05:58:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:58:12,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 231 [2020-12-22 05:58:12,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:13,021 INFO L225 Difference]: With dead ends: 114504 [2020-12-22 05:58:13,021 INFO L226 Difference]: Without dead ends: 86501 [2020-12-22 05:58:13,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:58:13,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86501 states. [2020-12-22 05:58:16,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86501 to 62470. [2020-12-22 05:58:16,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62470 states. [2020-12-22 05:58:16,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62470 states to 62470 states and 113326 transitions. [2020-12-22 05:58:16,517 INFO L78 Accepts]: Start accepts. Automaton has 62470 states and 113326 transitions. Word has length 231 [2020-12-22 05:58:16,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:58:16,518 INFO L481 AbstractCegarLoop]: Abstraction has 62470 states and 113326 transitions. [2020-12-22 05:58:16,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:58:16,518 INFO L276 IsEmpty]: Start isEmpty. Operand 62470 states and 113326 transitions. [2020-12-22 05:58:16,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-12-22 05:58:16,556 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:58:16,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:16,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 05:58:16,557 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:58:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:58:16,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1513911778, now seen corresponding path program 1 times [2020-12-22 05:58:16,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:58:16,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732144146] [2020-12-22 05:58:16,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:58:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:58:16,707 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 05:58:16,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732144146] [2020-12-22 05:58:16,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:58:16,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:58:16,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850172141] [2020-12-22 05:58:16,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:58:16,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:58:16,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:58:16,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:58:16,709 INFO L87 Difference]: Start difference. First operand 62470 states and 113326 transitions. Second operand 5 states.