/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_product03.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:55:08,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:55:08,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:55:08,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 05:55:08,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 05:55:08,972 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 05:55:08,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 05:55:08,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 05:55:08,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 05:55:08,997 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 05:55:08,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 05:55:09,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 05:55:09,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:55:09,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:55:09,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:55:09,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:55:09,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:55:09,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:55:09,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:55:09,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:55:09,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:55:09,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:55:09,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:55:09,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:55:09,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 05:55:09,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 05:55:09,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 05:55:09,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 05:55:09,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 05:55:09,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 05:55:09,077 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 05:55:09,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 05:55:09,080 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 05:55:09,082 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 05:55:09,083 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 05:55:09,083 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 05:55:09,084 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 05:55:09,084 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 05:55:09,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 05:55:09,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 05:55:09,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 05:55:09,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:55:09,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:55:09,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:55:09,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:55:09,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:55:09,155 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:55:09,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:55:09,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:55:09,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:55:09,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:55:09,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:55:09,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:55:09,158 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:55:09,158 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:55:09,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:55:09,159 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:55:09,159 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:55:09,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:55:09,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:55:09,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:55:09,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:55:09,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:55:09,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:55:09,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:55:09,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:55:09,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:55:09,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:55:09,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:55:09,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:55:09,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:55:09,658 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:55:09,664 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:55:09,666 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2020-12-22 05:55:09,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2dfddff/f782296ac4f04883ab775454c5b659c1/FLAG86f3a88cd [2020-12-22 05:55:10,502 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:55:10,507 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec14_product03.cil.c [2020-12-22 05:55:10,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2dfddff/f782296ac4f04883ab775454c5b659c1/FLAG86f3a88cd [2020-12-22 05:55:10,724 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df2dfddff/f782296ac4f04883ab775454c5b659c1 [2020-12-22 05:55:10,728 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:55:10,732 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:55:10,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:10,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:55:10,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:55:10,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:10" (1/1) ... [2020-12-22 05:55:10,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ebd557f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:10, skipping insertion in model container [2020-12-22 05:55:10,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:55:10" (1/1) ... [2020-12-22 05:55:10,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:55:10,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:55:11,583 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_product03.cil.c[68634,68647] [2020-12-22 05:55:11,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:11,616 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:55:11,761 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_product03.cil.c[68634,68647] [2020-12-22 05:55:11,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:55:11,841 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:55:11,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11 WrapperNode [2020-12-22 05:55:11,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:55:11,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:11,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:55:11,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:55:11,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (1/1) ... [2020-12-22 05:55:11,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (1/1) ... [2020-12-22 05:55:12,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:55:12,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:55:12,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:55:12,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:55:12,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (1/1) ... [2020-12-22 05:55:12,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (1/1) ... [2020-12-22 05:55:12,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (1/1) ... [2020-12-22 05:55:12,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (1/1) ... [2020-12-22 05:55:12,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (1/1) ... [2020-12-22 05:55:12,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (1/1) ... [2020-12-22 05:55:12,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (1/1) ... [2020-12-22 05:55:13,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:55:13,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:55:13,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:55:13,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:55:13,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (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 05:55:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:55:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:55:13,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:55:13,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:55:22,320 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:55:22,322 INFO L299 CfgBuilder]: Removed 1143 assume(true) statements. [2020-12-22 05:55:22,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:55:22 BoogieIcfgContainer [2020-12-22 05:55:22,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:55:22,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:55:22,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:55:22,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:55:22,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:55:10" (1/3) ... [2020-12-22 05:55:22,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591f73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:55:22, skipping insertion in model container [2020-12-22 05:55:22,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:55:11" (2/3) ... [2020-12-22 05:55:22,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@591f73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:55:22, skipping insertion in model container [2020-12-22 05:55:22,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:55:22" (3/3) ... [2020-12-22 05:55:22,345 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product03.cil.c [2020-12-22 05:55:22,355 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:55:22,362 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 05:55:22,381 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 05:55:22,439 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:55:22,440 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:55:22,440 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:55:22,440 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:55:22,440 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:55:22,440 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:55:22,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:55:22,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:55:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states. [2020-12-22 05:55:22,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:55:22,545 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:22,546 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 05:55:22,546 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 05:55:22,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:22,553 INFO L82 PathProgramCache]: Analyzing trace with hash 770856702, now seen corresponding path program 1 times [2020-12-22 05:55:22,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:22,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758757041] [2020-12-22 05:55:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:22,971 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 05:55:22,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758757041] [2020-12-22 05:55:22,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:22,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:22,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277184063] [2020-12-22 05:55:22,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:22,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:22,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:22,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:23,000 INFO L87 Difference]: Start difference. First operand 5427 states. Second operand 3 states. [2020-12-22 05:55:23,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:23,381 INFO L93 Difference]: Finished difference Result 13046 states and 24746 transitions. [2020-12-22 05:55:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:23,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 05:55:23,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:23,464 INFO L225 Difference]: With dead ends: 13046 [2020-12-22 05:55:23,464 INFO L226 Difference]: Without dead ends: 7623 [2020-12-22 05:55:23,486 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 05:55:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7623 states. [2020-12-22 05:55:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7623 to 5423. [2020-12-22 05:55:23,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5423 states. [2020-12-22 05:55:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5423 states to 5423 states and 10274 transitions. [2020-12-22 05:55:23,771 INFO L78 Accepts]: Start accepts. Automaton has 5423 states and 10274 transitions. Word has length 44 [2020-12-22 05:55:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:23,772 INFO L481 AbstractCegarLoop]: Abstraction has 5423 states and 10274 transitions. [2020-12-22 05:55:23,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:23,772 INFO L276 IsEmpty]: Start isEmpty. Operand 5423 states and 10274 transitions. [2020-12-22 05:55:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 05:55:23,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:23,779 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 05:55:23,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:55:23,780 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 05:55:23,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:23,783 INFO L82 PathProgramCache]: Analyzing trace with hash 190982898, now seen corresponding path program 1 times [2020-12-22 05:55:23,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:23,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490588011] [2020-12-22 05:55:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:23,966 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 05:55:23,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490588011] [2020-12-22 05:55:23,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:23,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:55:23,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107385760] [2020-12-22 05:55:23,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:55:23,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:23,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:55:23,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:55:23,975 INFO L87 Difference]: Start difference. First operand 5423 states and 10274 transitions. Second operand 6 states. [2020-12-22 05:55:24,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:24,902 INFO L93 Difference]: Finished difference Result 15156 states and 28716 transitions. [2020-12-22 05:55:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:55:24,902 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2020-12-22 05:55:24,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:24,962 INFO L225 Difference]: With dead ends: 15156 [2020-12-22 05:55:24,963 INFO L226 Difference]: Without dead ends: 9775 [2020-12-22 05:55:24,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:55:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9775 states. [2020-12-22 05:55:25,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9775 to 5419. [2020-12-22 05:55:25,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-12-22 05:55:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 10263 transitions. [2020-12-22 05:55:25,271 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 10263 transitions. Word has length 49 [2020-12-22 05:55:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:25,271 INFO L481 AbstractCegarLoop]: Abstraction has 5419 states and 10263 transitions. [2020-12-22 05:55:25,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:55:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 10263 transitions. [2020-12-22 05:55:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 05:55:25,277 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:25,277 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 05:55:25,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 05:55:25,277 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 05:55:25,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:25,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1439760622, now seen corresponding path program 1 times [2020-12-22 05:55:25,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:25,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777697635] [2020-12-22 05:55:25,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:25,427 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 05:55:25,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777697635] [2020-12-22 05:55:25,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:25,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:25,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128905798] [2020-12-22 05:55:25,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:25,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:25,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:25,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:25,431 INFO L87 Difference]: Start difference. First operand 5419 states and 10263 transitions. Second operand 4 states. [2020-12-22 05:55:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:26,289 INFO L93 Difference]: Finished difference Result 17318 states and 32802 transitions. [2020-12-22 05:55:26,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:26,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 05:55:26,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:26,361 INFO L225 Difference]: With dead ends: 17318 [2020-12-22 05:55:26,362 INFO L226 Difference]: Without dead ends: 11941 [2020-12-22 05:55:26,377 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 05:55:26,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11941 states. [2020-12-22 05:55:26,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11941 to 5419. [2020-12-22 05:55:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-12-22 05:55:26,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 10259 transitions. [2020-12-22 05:55:26,820 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 10259 transitions. Word has length 50 [2020-12-22 05:55:26,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:26,826 INFO L481 AbstractCegarLoop]: Abstraction has 5419 states and 10259 transitions. [2020-12-22 05:55:26,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:26,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 10259 transitions. [2020-12-22 05:55:26,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 05:55:26,832 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:26,832 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 05:55:26,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 05:55:26,832 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 05:55:26,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:26,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1257133717, now seen corresponding path program 1 times [2020-12-22 05:55:26,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:26,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590485858] [2020-12-22 05:55:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:26,951 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 05:55:26,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590485858] [2020-12-22 05:55:26,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:26,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:26,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72412412] [2020-12-22 05:55:26,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:26,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:26,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:26,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:26,956 INFO L87 Difference]: Start difference. First operand 5419 states and 10259 transitions. Second operand 4 states. [2020-12-22 05:55:27,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:27,466 INFO L93 Difference]: Finished difference Result 12990 states and 24606 transitions. [2020-12-22 05:55:27,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:27,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 05:55:27,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:27,492 INFO L225 Difference]: With dead ends: 12990 [2020-12-22 05:55:27,492 INFO L226 Difference]: Without dead ends: 7613 [2020-12-22 05:55:27,503 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 05:55:27,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2020-12-22 05:55:27,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 5419. [2020-12-22 05:55:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-12-22 05:55:27,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 10250 transitions. [2020-12-22 05:55:27,714 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 10250 transitions. Word has length 51 [2020-12-22 05:55:27,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:27,715 INFO L481 AbstractCegarLoop]: Abstraction has 5419 states and 10250 transitions. [2020-12-22 05:55:27,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:27,715 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 10250 transitions. [2020-12-22 05:55:27,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:55:27,717 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:27,717 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 05:55:27,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 05:55:27,718 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 05:55:27,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:27,718 INFO L82 PathProgramCache]: Analyzing trace with hash -1001017801, now seen corresponding path program 1 times [2020-12-22 05:55:27,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:27,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128056725] [2020-12-22 05:55:27,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:27,787 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 05:55:27,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128056725] [2020-12-22 05:55:27,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:27,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:27,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278852985] [2020-12-22 05:55:27,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:27,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:27,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:27,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:27,790 INFO L87 Difference]: Start difference. First operand 5419 states and 10250 transitions. Second operand 4 states. [2020-12-22 05:55:28,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:28,291 INFO L93 Difference]: Finished difference Result 12990 states and 24588 transitions. [2020-12-22 05:55:28,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:28,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 05:55:28,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:28,314 INFO L225 Difference]: With dead ends: 12990 [2020-12-22 05:55:28,315 INFO L226 Difference]: Without dead ends: 7613 [2020-12-22 05:55:28,325 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 05:55:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7613 states. [2020-12-22 05:55:28,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7613 to 5419. [2020-12-22 05:55:28,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5419 states. [2020-12-22 05:55:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5419 states to 5419 states and 10241 transitions. [2020-12-22 05:55:28,577 INFO L78 Accepts]: Start accepts. Automaton has 5419 states and 10241 transitions. Word has length 52 [2020-12-22 05:55:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:28,577 INFO L481 AbstractCegarLoop]: Abstraction has 5419 states and 10241 transitions. [2020-12-22 05:55:28,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:28,578 INFO L276 IsEmpty]: Start isEmpty. Operand 5419 states and 10241 transitions. [2020-12-22 05:55:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 05:55:28,580 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:28,580 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 05:55:28,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 05:55:28,580 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 05:55:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:28,581 INFO L82 PathProgramCache]: Analyzing trace with hash -909735241, now seen corresponding path program 1 times [2020-12-22 05:55:28,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:28,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538177228] [2020-12-22 05:55:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:28,644 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 05:55:28,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538177228] [2020-12-22 05:55:28,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:28,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:28,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502223935] [2020-12-22 05:55:28,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:28,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:28,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:28,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:28,647 INFO L87 Difference]: Start difference. First operand 5419 states and 10241 transitions. Second operand 4 states. [2020-12-22 05:55:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:29,176 INFO L93 Difference]: Finished difference Result 15133 states and 28630 transitions. [2020-12-22 05:55:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:29,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-12-22 05:55:29,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:29,203 INFO L225 Difference]: With dead ends: 15133 [2020-12-22 05:55:29,203 INFO L226 Difference]: Without dead ends: 9735 [2020-12-22 05:55:29,215 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 05:55:29,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9735 states. [2020-12-22 05:55:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9735 to 5401. [2020-12-22 05:55:29,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5401 states. [2020-12-22 05:55:29,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 10210 transitions. [2020-12-22 05:55:29,430 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 10210 transitions. Word has length 52 [2020-12-22 05:55:29,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:29,430 INFO L481 AbstractCegarLoop]: Abstraction has 5401 states and 10210 transitions. [2020-12-22 05:55:29,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 10210 transitions. [2020-12-22 05:55:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 05:55:29,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:29,433 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 05:55:29,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 05:55:29,434 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 05:55:29,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:29,439 INFO L82 PathProgramCache]: Analyzing trace with hash 2048199066, now seen corresponding path program 1 times [2020-12-22 05:55:29,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:29,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001032882] [2020-12-22 05:55:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:29,527 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 05:55:29,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001032882] [2020-12-22 05:55:29,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:29,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:29,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360446449] [2020-12-22 05:55:29,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:29,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:29,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:29,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:29,531 INFO L87 Difference]: Start difference. First operand 5401 states and 10210 transitions. Second operand 4 states. [2020-12-22 05:55:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:30,037 INFO L93 Difference]: Finished difference Result 12954 states and 24505 transitions. [2020-12-22 05:55:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:30,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 05:55:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:30,061 INFO L225 Difference]: With dead ends: 12954 [2020-12-22 05:55:30,061 INFO L226 Difference]: Without dead ends: 7574 [2020-12-22 05:55:30,073 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 05:55:30,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7574 states. [2020-12-22 05:55:30,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7574 to 5401. [2020-12-22 05:55:30,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5401 states. [2020-12-22 05:55:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 10204 transitions. [2020-12-22 05:55:30,281 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 10204 transitions. Word has length 53 [2020-12-22 05:55:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:30,282 INFO L481 AbstractCegarLoop]: Abstraction has 5401 states and 10204 transitions. [2020-12-22 05:55:30,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:30,282 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 10204 transitions. [2020-12-22 05:55:30,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 05:55:30,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:30,285 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] [2020-12-22 05:55:30,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 05:55:30,285 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 05:55:30,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:30,286 INFO L82 PathProgramCache]: Analyzing trace with hash 2122111324, now seen corresponding path program 1 times [2020-12-22 05:55:30,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:30,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186117497] [2020-12-22 05:55:30,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:30,385 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 05:55:30,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186117497] [2020-12-22 05:55:30,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:30,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:30,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96949132] [2020-12-22 05:55:30,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:30,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:30,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:30,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:30,388 INFO L87 Difference]: Start difference. First operand 5401 states and 10204 transitions. Second operand 4 states. [2020-12-22 05:55:30,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:30,828 INFO L93 Difference]: Finished difference Result 12954 states and 24493 transitions. [2020-12-22 05:55:30,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:55:30,829 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 05:55:30,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:30,851 INFO L225 Difference]: With dead ends: 12954 [2020-12-22 05:55:30,852 INFO L226 Difference]: Without dead ends: 7574 [2020-12-22 05:55:30,861 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 05:55:30,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7574 states. [2020-12-22 05:55:31,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7574 to 5401. [2020-12-22 05:55:31,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5401 states. [2020-12-22 05:55:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 10198 transitions. [2020-12-22 05:55:31,060 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 10198 transitions. Word has length 54 [2020-12-22 05:55:31,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:31,060 INFO L481 AbstractCegarLoop]: Abstraction has 5401 states and 10198 transitions. [2020-12-22 05:55:31,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:31,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 10198 transitions. [2020-12-22 05:55:31,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:55:31,062 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:31,063 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 05:55:31,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 05:55:31,063 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 05:55:31,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:31,064 INFO L82 PathProgramCache]: Analyzing trace with hash -688111583, now seen corresponding path program 1 times [2020-12-22 05:55:31,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:31,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713748129] [2020-12-22 05:55:31,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:31,136 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 05:55:31,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713748129] [2020-12-22 05:55:31,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:31,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:31,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491730261] [2020-12-22 05:55:31,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:55:31,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:31,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:55:31,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:55:31,144 INFO L87 Difference]: Start difference. First operand 5401 states and 10198 transitions. Second operand 3 states. [2020-12-22 05:55:31,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:31,505 INFO L93 Difference]: Finished difference Result 12945 states and 24470 transitions. [2020-12-22 05:55:31,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:55:31,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-22 05:55:31,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:31,528 INFO L225 Difference]: With dead ends: 12945 [2020-12-22 05:55:31,528 INFO L226 Difference]: Without dead ends: 7565 [2020-12-22 05:55:31,538 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 05:55:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7565 states. [2020-12-22 05:55:31,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7565 to 5401. [2020-12-22 05:55:31,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5401 states. [2020-12-22 05:55:31,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5401 states to 5401 states and 10197 transitions. [2020-12-22 05:55:31,737 INFO L78 Accepts]: Start accepts. Automaton has 5401 states and 10197 transitions. Word has length 55 [2020-12-22 05:55:31,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:31,737 INFO L481 AbstractCegarLoop]: Abstraction has 5401 states and 10197 transitions. [2020-12-22 05:55:31,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:55:31,738 INFO L276 IsEmpty]: Start isEmpty. Operand 5401 states and 10197 transitions. [2020-12-22 05:55:31,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 05:55:31,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:31,740 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 05:55:31,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 05:55:31,740 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 05:55:31,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:31,741 INFO L82 PathProgramCache]: Analyzing trace with hash 155893919, now seen corresponding path program 1 times [2020-12-22 05:55:31,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:31,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773974290] [2020-12-22 05:55:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:31,822 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 05:55:31,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773974290] [2020-12-22 05:55:31,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:31,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:55:31,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870042163] [2020-12-22 05:55:31,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:55:31,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:31,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:55:31,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:55:31,824 INFO L87 Difference]: Start difference. First operand 5401 states and 10197 transitions. Second operand 7 states. [2020-12-22 05:55:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:32,812 INFO L93 Difference]: Finished difference Result 17289 states and 32679 transitions. [2020-12-22 05:55:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:55:32,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 55 [2020-12-22 05:55:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:32,851 INFO L225 Difference]: With dead ends: 17289 [2020-12-22 05:55:32,852 INFO L226 Difference]: Without dead ends: 11915 [2020-12-22 05:55:32,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:55:32,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11915 states. [2020-12-22 05:55:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11915 to 5403. [2020-12-22 05:55:33,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5403 states. [2020-12-22 05:55:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 10198 transitions. [2020-12-22 05:55:33,115 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 10198 transitions. Word has length 55 [2020-12-22 05:55:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:33,116 INFO L481 AbstractCegarLoop]: Abstraction has 5403 states and 10198 transitions. [2020-12-22 05:55:33,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:55:33,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 10198 transitions. [2020-12-22 05:55:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-12-22 05:55:33,118 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:33,119 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 05:55:33,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 05:55:33,119 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 05:55:33,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:33,120 INFO L82 PathProgramCache]: Analyzing trace with hash -907086511, now seen corresponding path program 1 times [2020-12-22 05:55:33,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:33,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047935061] [2020-12-22 05:55:33,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:33,253 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 05:55:33,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047935061] [2020-12-22 05:55:33,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:33,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:33,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727322359] [2020-12-22 05:55:33,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:33,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:33,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:33,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:33,256 INFO L87 Difference]: Start difference. First operand 5403 states and 10198 transitions. Second operand 4 states. [2020-12-22 05:55:35,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:35,820 INFO L93 Difference]: Finished difference Result 14893 states and 28284 transitions. [2020-12-22 05:55:35,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:55:35,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-12-22 05:55:35,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:35,854 INFO L225 Difference]: With dead ends: 14893 [2020-12-22 05:55:35,854 INFO L226 Difference]: Without dead ends: 9523 [2020-12-22 05:55:35,866 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 05:55:35,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2020-12-22 05:55:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 5403. [2020-12-22 05:55:36,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5403 states. [2020-12-22 05:55:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 10178 transitions. [2020-12-22 05:55:36,179 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 10178 transitions. Word has length 56 [2020-12-22 05:55:36,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:36,179 INFO L481 AbstractCegarLoop]: Abstraction has 5403 states and 10178 transitions. [2020-12-22 05:55:36,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:36,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 10178 transitions. [2020-12-22 05:55:36,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-22 05:55:36,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:36,182 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 05:55:36,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 05:55:36,183 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 05:55:36,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:36,183 INFO L82 PathProgramCache]: Analyzing trace with hash -2054879961, now seen corresponding path program 1 times [2020-12-22 05:55:36,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:36,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992781744] [2020-12-22 05:55:36,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:55:36,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992781744] [2020-12-22 05:55:36,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:36,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:36,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976100592] [2020-12-22 05:55:36,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:36,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:36,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:36,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:36,289 INFO L87 Difference]: Start difference. First operand 5403 states and 10178 transitions. Second operand 4 states. [2020-12-22 05:55:38,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:38,793 INFO L93 Difference]: Finished difference Result 14893 states and 28245 transitions. [2020-12-22 05:55:38,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:55:38,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-12-22 05:55:38,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:38,823 INFO L225 Difference]: With dead ends: 14893 [2020-12-22 05:55:38,824 INFO L226 Difference]: Without dead ends: 9523 [2020-12-22 05:55:38,835 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 05:55:38,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2020-12-22 05:55:39,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 5403. [2020-12-22 05:55:39,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5403 states. [2020-12-22 05:55:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 10158 transitions. [2020-12-22 05:55:39,094 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 10158 transitions. Word has length 59 [2020-12-22 05:55:39,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:39,094 INFO L481 AbstractCegarLoop]: Abstraction has 5403 states and 10158 transitions. [2020-12-22 05:55:39,094 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:39,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 10158 transitions. [2020-12-22 05:55:39,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 05:55:39,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:39,104 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 05:55:39,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 05:55:39,104 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 05:55:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:39,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1459234742, now seen corresponding path program 1 times [2020-12-22 05:55:39,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:39,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594037560] [2020-12-22 05:55:39,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:39,211 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 05:55:39,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594037560] [2020-12-22 05:55:39,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:39,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:39,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176261934] [2020-12-22 05:55:39,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:39,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:39,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:39,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:39,214 INFO L87 Difference]: Start difference. First operand 5403 states and 10158 transitions. Second operand 4 states. [2020-12-22 05:55:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:41,543 INFO L93 Difference]: Finished difference Result 14893 states and 28206 transitions. [2020-12-22 05:55:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:55:41,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 05:55:41,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:41,563 INFO L225 Difference]: With dead ends: 14893 [2020-12-22 05:55:41,563 INFO L226 Difference]: Without dead ends: 9523 [2020-12-22 05:55:41,574 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 05:55:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2020-12-22 05:55:41,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 5403. [2020-12-22 05:55:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5403 states. [2020-12-22 05:55:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 10138 transitions. [2020-12-22 05:55:41,838 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 10138 transitions. Word has length 62 [2020-12-22 05:55:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:41,838 INFO L481 AbstractCegarLoop]: Abstraction has 5403 states and 10138 transitions. [2020-12-22 05:55:41,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:41,838 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 10138 transitions. [2020-12-22 05:55:41,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 05:55:41,841 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:41,841 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 05:55:41,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 05:55:41,842 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 05:55:41,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:41,842 INFO L82 PathProgramCache]: Analyzing trace with hash -746834622, now seen corresponding path program 1 times [2020-12-22 05:55:41,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:41,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410021106] [2020-12-22 05:55:41,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:41,925 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 05:55:41,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410021106] [2020-12-22 05:55:41,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:41,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:55:41,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253305849] [2020-12-22 05:55:41,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:55:41,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:41,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:55:41,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:55:41,928 INFO L87 Difference]: Start difference. First operand 5403 states and 10138 transitions. Second operand 4 states. [2020-12-22 05:55:44,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:44,205 INFO L93 Difference]: Finished difference Result 14893 states and 28167 transitions. [2020-12-22 05:55:44,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:55:44,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-22 05:55:44,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:44,231 INFO L225 Difference]: With dead ends: 14893 [2020-12-22 05:55:44,232 INFO L226 Difference]: Without dead ends: 9523 [2020-12-22 05:55:44,244 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 05:55:44,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2020-12-22 05:55:44,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 5403. [2020-12-22 05:55:44,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5403 states. [2020-12-22 05:55:44,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 10118 transitions. [2020-12-22 05:55:44,530 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 10118 transitions. Word has length 65 [2020-12-22 05:55:44,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:44,531 INFO L481 AbstractCegarLoop]: Abstraction has 5403 states and 10118 transitions. [2020-12-22 05:55:44,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:55:44,531 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 10118 transitions. [2020-12-22 05:55:44,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 05:55:44,534 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:44,534 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 05:55:44,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 05:55:44,535 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 05:55:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash -17617253, now seen corresponding path program 1 times [2020-12-22 05:55:44,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:44,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89426384] [2020-12-22 05:55:44,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:44,608 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 05:55:44,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89426384] [2020-12-22 05:55:44,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:44,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:55:44,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225995400] [2020-12-22 05:55:44,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:55:44,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:44,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:55:44,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:55:44,610 INFO L87 Difference]: Start difference. First operand 5403 states and 10118 transitions. Second operand 6 states. [2020-12-22 05:55:53,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:55:53,218 INFO L93 Difference]: Finished difference Result 57204 states and 108151 transitions. [2020-12-22 05:55:53,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:55:53,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-12-22 05:55:53,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:55:53,298 INFO L225 Difference]: With dead ends: 57204 [2020-12-22 05:55:53,298 INFO L226 Difference]: Without dead ends: 51852 [2020-12-22 05:55:53,320 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 05:55:53,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51852 states. [2020-12-22 05:55:54,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51852 to 10699. [2020-12-22 05:55:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10699 states. [2020-12-22 05:55:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10699 states to 10699 states and 20060 transitions. [2020-12-22 05:55:54,304 INFO L78 Accepts]: Start accepts. Automaton has 10699 states and 20060 transitions. Word has length 68 [2020-12-22 05:55:54,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:55:54,305 INFO L481 AbstractCegarLoop]: Abstraction has 10699 states and 20060 transitions. [2020-12-22 05:55:54,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:55:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 10699 states and 20060 transitions. [2020-12-22 05:55:54,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 05:55:54,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:55:54,309 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 05:55:54,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 05:55:54,310 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 05:55:54,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:55:54,310 INFO L82 PathProgramCache]: Analyzing trace with hash 712103995, now seen corresponding path program 1 times [2020-12-22 05:55:54,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:55:54,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441304567] [2020-12-22 05:55:54,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:55:54,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:55:54,379 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 05:55:54,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441304567] [2020-12-22 05:55:54,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:55:54,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:55:54,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859971526] [2020-12-22 05:55:54,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:55:54,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:55:54,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:55:54,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:55:54,381 INFO L87 Difference]: Start difference. First operand 10699 states and 20060 transitions. Second operand 5 states. [2020-12-22 05:56:00,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:00,034 INFO L93 Difference]: Finished difference Result 56158 states and 105054 transitions. [2020-12-22 05:56:00,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:00,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-12-22 05:56:00,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:00,092 INFO L225 Difference]: With dead ends: 56158 [2020-12-22 05:56:00,092 INFO L226 Difference]: Without dead ends: 45551 [2020-12-22 05:56:00,104 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 05:56:00,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45551 states. [2020-12-22 05:56:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45551 to 15021. [2020-12-22 05:56:01,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15021 states. [2020-12-22 05:56:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15021 states to 15021 states and 28148 transitions. [2020-12-22 05:56:01,199 INFO L78 Accepts]: Start accepts. Automaton has 15021 states and 28148 transitions. Word has length 70 [2020-12-22 05:56:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:01,200 INFO L481 AbstractCegarLoop]: Abstraction has 15021 states and 28148 transitions. [2020-12-22 05:56:01,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 15021 states and 28148 transitions. [2020-12-22 05:56:01,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:56:01,205 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:01,205 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 05:56:01,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 05:56:01,205 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 05:56:01,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:01,206 INFO L82 PathProgramCache]: Analyzing trace with hash 372239342, now seen corresponding path program 1 times [2020-12-22 05:56:01,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:01,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477218845] [2020-12-22 05:56:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:01,267 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 05:56:01,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477218845] [2020-12-22 05:56:01,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:01,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:56:01,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982434450] [2020-12-22 05:56:01,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:56:01,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:01,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:56:01,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:56:01,269 INFO L87 Difference]: Start difference. First operand 15021 states and 28148 transitions. Second operand 4 states. [2020-12-22 05:56:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:07,213 INFO L93 Difference]: Finished difference Result 60937 states and 114724 transitions. [2020-12-22 05:56:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:07,213 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-22 05:56:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:07,278 INFO L225 Difference]: With dead ends: 60937 [2020-12-22 05:56:07,278 INFO L226 Difference]: Without dead ends: 45969 [2020-12-22 05:56:07,296 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 05:56:07,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45969 states. [2020-12-22 05:56:08,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45969 to 25519. [2020-12-22 05:56:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25519 states. [2020-12-22 05:56:08,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25519 states to 25519 states and 47320 transitions. [2020-12-22 05:56:08,529 INFO L78 Accepts]: Start accepts. Automaton has 25519 states and 47320 transitions. Word has length 71 [2020-12-22 05:56:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:08,529 INFO L481 AbstractCegarLoop]: Abstraction has 25519 states and 47320 transitions. [2020-12-22 05:56:08,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:56:08,529 INFO L276 IsEmpty]: Start isEmpty. Operand 25519 states and 47320 transitions. [2020-12-22 05:56:08,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-22 05:56:08,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:08,533 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 05:56:08,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 05:56:08,533 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 05:56:08,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:08,534 INFO L82 PathProgramCache]: Analyzing trace with hash -728367501, now seen corresponding path program 1 times [2020-12-22 05:56:08,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:08,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344751074] [2020-12-22 05:56:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:08,597 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 05:56:08,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344751074] [2020-12-22 05:56:08,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:08,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:08,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641152484] [2020-12-22 05:56:08,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:08,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:08,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:08,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:08,754 INFO L87 Difference]: Start difference. First operand 25519 states and 47320 transitions. Second operand 5 states. [2020-12-22 05:56:10,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:10,067 INFO L93 Difference]: Finished difference Result 53852 states and 99956 transitions. [2020-12-22 05:56:10,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:56:10,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 71 [2020-12-22 05:56:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:10,106 INFO L225 Difference]: With dead ends: 53852 [2020-12-22 05:56:10,106 INFO L226 Difference]: Without dead ends: 28357 [2020-12-22 05:56:10,128 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 05:56:10,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28357 states. [2020-12-22 05:56:10,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28357 to 16633. [2020-12-22 05:56:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16633 states. [2020-12-22 05:56:11,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16633 states to 16633 states and 30860 transitions. [2020-12-22 05:56:11,042 INFO L78 Accepts]: Start accepts. Automaton has 16633 states and 30860 transitions. Word has length 71 [2020-12-22 05:56:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:11,043 INFO L481 AbstractCegarLoop]: Abstraction has 16633 states and 30860 transitions. [2020-12-22 05:56:11,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 16633 states and 30860 transitions. [2020-12-22 05:56:11,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:56:11,045 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:11,045 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 05:56:11,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 05:56:11,046 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 05:56:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:11,046 INFO L82 PathProgramCache]: Analyzing trace with hash 341611366, now seen corresponding path program 1 times [2020-12-22 05:56:11,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:11,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995825995] [2020-12-22 05:56:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:11,116 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 05:56:11,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995825995] [2020-12-22 05:56:11,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:11,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 05:56:11,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380456147] [2020-12-22 05:56:11,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:11,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:11,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:11,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:11,118 INFO L87 Difference]: Start difference. First operand 16633 states and 30860 transitions. Second operand 5 states. [2020-12-22 05:56:16,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:16,715 INFO L93 Difference]: Finished difference Result 135002 states and 250927 transitions. [2020-12-22 05:56:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:16,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-22 05:56:16,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:16,928 INFO L225 Difference]: With dead ends: 135002 [2020-12-22 05:56:16,929 INFO L226 Difference]: Without dead ends: 118412 [2020-12-22 05:56:16,963 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 05:56:17,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118412 states. [2020-12-22 05:56:19,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118412 to 32269. [2020-12-22 05:56:19,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32269 states. [2020-12-22 05:56:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32269 states to 32269 states and 59839 transitions. [2020-12-22 05:56:19,213 INFO L78 Accepts]: Start accepts. Automaton has 32269 states and 59839 transitions. Word has length 73 [2020-12-22 05:56:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:19,213 INFO L481 AbstractCegarLoop]: Abstraction has 32269 states and 59839 transitions. [2020-12-22 05:56:19,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:19,213 INFO L276 IsEmpty]: Start isEmpty. Operand 32269 states and 59839 transitions. [2020-12-22 05:56:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:56:19,215 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:19,216 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 05:56:19,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 05:56:19,216 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 05:56:19,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:19,216 INFO L82 PathProgramCache]: Analyzing trace with hash -502394136, now seen corresponding path program 1 times [2020-12-22 05:56:19,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:19,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363297906] [2020-12-22 05:56:19,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:19,274 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 05:56:19,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363297906] [2020-12-22 05:56:19,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:19,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:56:19,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835338422] [2020-12-22 05:56:19,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:56:19,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:19,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:56:19,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:19,276 INFO L87 Difference]: Start difference. First operand 32269 states and 59839 transitions. Second operand 3 states. [2020-12-22 05:56:20,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:20,928 INFO L93 Difference]: Finished difference Result 52076 states and 95715 transitions. [2020-12-22 05:56:20,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:56:20,929 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-22 05:56:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:20,980 INFO L225 Difference]: With dead ends: 52076 [2020-12-22 05:56:20,980 INFO L226 Difference]: Without dead ends: 33331 [2020-12-22 05:56:21,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:56:21,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33331 states. [2020-12-22 05:56:22,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33331 to 33321. [2020-12-22 05:56:22,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33321 states. [2020-12-22 05:56:22,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33321 states to 33321 states and 61335 transitions. [2020-12-22 05:56:22,697 INFO L78 Accepts]: Start accepts. Automaton has 33321 states and 61335 transitions. Word has length 73 [2020-12-22 05:56:22,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:22,697 INFO L481 AbstractCegarLoop]: Abstraction has 33321 states and 61335 transitions. [2020-12-22 05:56:22,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:56:22,697 INFO L276 IsEmpty]: Start isEmpty. Operand 33321 states and 61335 transitions. [2020-12-22 05:56:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-22 05:56:22,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:22,699 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 05:56:22,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 05:56:22,700 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 05:56:22,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:22,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1203994010, now seen corresponding path program 1 times [2020-12-22 05:56:22,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:22,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524619413] [2020-12-22 05:56:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:22,781 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 05:56:22,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524619413] [2020-12-22 05:56:22,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:22,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:22,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539370983] [2020-12-22 05:56:22,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:56:22,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:22,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:56:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:56:22,783 INFO L87 Difference]: Start difference. First operand 33321 states and 61335 transitions. Second operand 6 states. [2020-12-22 05:56:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:29,318 INFO L93 Difference]: Finished difference Result 96949 states and 179713 transitions. [2020-12-22 05:56:29,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:56:29,319 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 73 [2020-12-22 05:56:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:29,453 INFO L225 Difference]: With dead ends: 96949 [2020-12-22 05:56:29,453 INFO L226 Difference]: Without dead ends: 78225 [2020-12-22 05:56:29,480 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 05:56:29,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78225 states. [2020-12-22 05:56:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78225 to 33321. [2020-12-22 05:56:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33321 states. [2020-12-22 05:56:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33321 states to 33321 states and 61287 transitions. [2020-12-22 05:56:31,635 INFO L78 Accepts]: Start accepts. Automaton has 33321 states and 61287 transitions. Word has length 73 [2020-12-22 05:56:31,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:31,636 INFO L481 AbstractCegarLoop]: Abstraction has 33321 states and 61287 transitions. [2020-12-22 05:56:31,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand 33321 states and 61287 transitions. [2020-12-22 05:56:31,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 05:56:31,638 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:31,638 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 05:56:31,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 05:56:31,639 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 05:56:31,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:31,639 INFO L82 PathProgramCache]: Analyzing trace with hash -739112864, now seen corresponding path program 1 times [2020-12-22 05:56:31,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:31,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56954080] [2020-12-22 05:56:31,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:31,696 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 05:56:31,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56954080] [2020-12-22 05:56:31,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:31,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:31,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219559804] [2020-12-22 05:56:31,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:31,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:31,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:31,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:31,698 INFO L87 Difference]: Start difference. First operand 33321 states and 61287 transitions. Second operand 5 states. [2020-12-22 05:56:34,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:34,533 INFO L93 Difference]: Finished difference Result 70265 states and 128240 transitions. [2020-12-22 05:56:34,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 05:56:34,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-12-22 05:56:34,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:34,604 INFO L225 Difference]: With dead ends: 70265 [2020-12-22 05:56:34,605 INFO L226 Difference]: Without dead ends: 51719 [2020-12-22 05:56:34,724 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 05:56:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51719 states. [2020-12-22 05:56:36,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51719 to 33417. [2020-12-22 05:56:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33417 states. [2020-12-22 05:56:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33417 states to 33417 states and 61383 transitions. [2020-12-22 05:56:36,530 INFO L78 Accepts]: Start accepts. Automaton has 33417 states and 61383 transitions. Word has length 75 [2020-12-22 05:56:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:36,530 INFO L481 AbstractCegarLoop]: Abstraction has 33417 states and 61383 transitions. [2020-12-22 05:56:36,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:36,530 INFO L276 IsEmpty]: Start isEmpty. Operand 33417 states and 61383 transitions. [2020-12-22 05:56:36,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:56:36,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:36,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:36,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 05:56:36,533 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 05:56:36,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:36,534 INFO L82 PathProgramCache]: Analyzing trace with hash -4668339, now seen corresponding path program 1 times [2020-12-22 05:56:36,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:36,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821530820] [2020-12-22 05:56:36,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:36,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:36,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821530820] [2020-12-22 05:56:36,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:36,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:36,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491270988] [2020-12-22 05:56:36,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:36,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:36,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:36,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:36,641 INFO L87 Difference]: Start difference. First operand 33417 states and 61383 transitions. Second operand 5 states. [2020-12-22 05:56:40,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:40,458 INFO L93 Difference]: Finished difference Result 76129 states and 140804 transitions. [2020-12-22 05:56:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:40,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-12-22 05:56:40,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:40,552 INFO L225 Difference]: With dead ends: 76129 [2020-12-22 05:56:40,552 INFO L226 Difference]: Without dead ends: 51830 [2020-12-22 05:56:40,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:56:40,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51830 states. [2020-12-22 05:56:42,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51830 to 33417. [2020-12-22 05:56:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33417 states. [2020-12-22 05:56:42,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33417 states to 33417 states and 60971 transitions. [2020-12-22 05:56:42,535 INFO L78 Accepts]: Start accepts. Automaton has 33417 states and 60971 transitions. Word has length 83 [2020-12-22 05:56:42,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:42,535 INFO L481 AbstractCegarLoop]: Abstraction has 33417 states and 60971 transitions. [2020-12-22 05:56:42,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:42,535 INFO L276 IsEmpty]: Start isEmpty. Operand 33417 states and 60971 transitions. [2020-12-22 05:56:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 05:56:42,538 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:42,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:56:42,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 05:56:42,538 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 05:56:42,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:42,539 INFO L82 PathProgramCache]: Analyzing trace with hash 97641130, now seen corresponding path program 1 times [2020-12-22 05:56:42,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:42,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133708282] [2020-12-22 05:56:42,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:56:42,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133708282] [2020-12-22 05:56:42,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:42,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:56:42,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476045287] [2020-12-22 05:56:42,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:56:42,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:42,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:56:42,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:56:42,621 INFO L87 Difference]: Start difference. First operand 33417 states and 60971 transitions. Second operand 6 states. [2020-12-22 05:56:44,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:44,796 INFO L93 Difference]: Finished difference Result 56514 states and 102469 transitions. [2020-12-22 05:56:44,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 05:56:44,796 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-12-22 05:56:44,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:44,842 INFO L225 Difference]: With dead ends: 56514 [2020-12-22 05:56:44,843 INFO L226 Difference]: Without dead ends: 37045 [2020-12-22 05:56:44,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:56:44,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37045 states. [2020-12-22 05:56:46,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37045 to 33417. [2020-12-22 05:56:46,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33417 states. [2020-12-22 05:56:46,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33417 states to 33417 states and 60535 transitions. [2020-12-22 05:56:46,694 INFO L78 Accepts]: Start accepts. Automaton has 33417 states and 60535 transitions. Word has length 83 [2020-12-22 05:56:46,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:46,694 INFO L481 AbstractCegarLoop]: Abstraction has 33417 states and 60535 transitions. [2020-12-22 05:56:46,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:56:46,694 INFO L276 IsEmpty]: Start isEmpty. Operand 33417 states and 60535 transitions. [2020-12-22 05:56:46,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 05:56:46,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:46,696 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 05:56:46,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 05:56:46,702 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 05:56:46,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:46,703 INFO L82 PathProgramCache]: Analyzing trace with hash -407359886, now seen corresponding path program 1 times [2020-12-22 05:56:46,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:46,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564539289] [2020-12-22 05:56:46,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:46,959 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 05:56:46,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564539289] [2020-12-22 05:56:46,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:46,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:46,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106710551] [2020-12-22 05:56:46,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:46,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:46,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:46,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:46,961 INFO L87 Difference]: Start difference. First operand 33417 states and 60535 transitions. Second operand 5 states. [2020-12-22 05:56:52,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:52,306 INFO L93 Difference]: Finished difference Result 117813 states and 213780 transitions. [2020-12-22 05:56:52,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:56:52,307 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-12-22 05:56:52,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:52,463 INFO L225 Difference]: With dead ends: 117813 [2020-12-22 05:56:52,463 INFO L226 Difference]: Without dead ends: 99062 [2020-12-22 05:56:52,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 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 05:56:52,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99062 states. [2020-12-22 05:56:55,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99062 to 49918. [2020-12-22 05:56:55,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49918 states. [2020-12-22 05:56:55,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49918 states to 49918 states and 90033 transitions. [2020-12-22 05:56:55,667 INFO L78 Accepts]: Start accepts. Automaton has 49918 states and 90033 transitions. Word has length 84 [2020-12-22 05:56:55,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:56:55,667 INFO L481 AbstractCegarLoop]: Abstraction has 49918 states and 90033 transitions. [2020-12-22 05:56:55,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:56:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 49918 states and 90033 transitions. [2020-12-22 05:56:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:56:55,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:56:55,669 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 05:56:55,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 05:56:55,669 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 05:56:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:56:55,670 INFO L82 PathProgramCache]: Analyzing trace with hash -479437977, now seen corresponding path program 1 times [2020-12-22 05:56:55,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:56:55,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769889480] [2020-12-22 05:56:55,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:56:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:56:55,769 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 05:56:55,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769889480] [2020-12-22 05:56:55,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:56:55,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:56:55,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133167428] [2020-12-22 05:56:55,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:56:55,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:56:55,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:56:55,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:56:55,772 INFO L87 Difference]: Start difference. First operand 49918 states and 90033 transitions. Second operand 5 states. [2020-12-22 05:56:59,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:56:59,048 INFO L93 Difference]: Finished difference Result 84910 states and 152369 transitions. [2020-12-22 05:56:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:56:59,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-12-22 05:56:59,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:56:59,131 INFO L225 Difference]: With dead ends: 84910 [2020-12-22 05:56:59,131 INFO L226 Difference]: Without dead ends: 52944 [2020-12-22 05:56:59,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:56:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52944 states. [2020-12-22 05:57:02,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52944 to 52829. [2020-12-22 05:57:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52829 states. [2020-12-22 05:57:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52829 states to 52829 states and 94763 transitions. [2020-12-22 05:57:02,254 INFO L78 Accepts]: Start accepts. Automaton has 52829 states and 94763 transitions. Word has length 85 [2020-12-22 05:57:02,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:02,254 INFO L481 AbstractCegarLoop]: Abstraction has 52829 states and 94763 transitions. [2020-12-22 05:57:02,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:02,254 INFO L276 IsEmpty]: Start isEmpty. Operand 52829 states and 94763 transitions. [2020-12-22 05:57:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-22 05:57:02,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:02,257 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 05:57:02,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 05:57:02,257 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 05:57:02,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:02,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1500506331, now seen corresponding path program 1 times [2020-12-22 05:57:02,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:02,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245532683] [2020-12-22 05:57:02,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:02,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:02,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245532683] [2020-12-22 05:57:02,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:02,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:02,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528464814] [2020-12-22 05:57:02,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:57:02,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:02,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:57:02,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:57:02,357 INFO L87 Difference]: Start difference. First operand 52829 states and 94763 transitions. Second operand 6 states. [2020-12-22 05:57:12,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:12,080 INFO L93 Difference]: Finished difference Result 195527 states and 356091 transitions. [2020-12-22 05:57:12,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 05:57:12,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-12-22 05:57:12,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:12,219 INFO L225 Difference]: With dead ends: 195527 [2020-12-22 05:57:12,219 INFO L226 Difference]: Without dead ends: 81695 [2020-12-22 05:57:12,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 05:57:12,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81695 states. [2020-12-22 05:57:14,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81695 to 26775. [2020-12-22 05:57:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26775 states. [2020-12-22 05:57:14,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26775 states to 26775 states and 47874 transitions. [2020-12-22 05:57:14,292 INFO L78 Accepts]: Start accepts. Automaton has 26775 states and 47874 transitions. Word has length 85 [2020-12-22 05:57:14,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:14,292 INFO L481 AbstractCegarLoop]: Abstraction has 26775 states and 47874 transitions. [2020-12-22 05:57:14,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:57:14,292 INFO L276 IsEmpty]: Start isEmpty. Operand 26775 states and 47874 transitions. [2020-12-22 05:57:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-12-22 05:57:14,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:14,313 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 05:57:14,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-22 05:57:14,313 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 05:57:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:14,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1551597897, now seen corresponding path program 1 times [2020-12-22 05:57:14,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:14,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187590769] [2020-12-22 05:57:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:14,497 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 05:57:14,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187590769] [2020-12-22 05:57:14,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:14,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 05:57:14,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594864409] [2020-12-22 05:57:14,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:57:14,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:14,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:57:14,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:57:14,499 INFO L87 Difference]: Start difference. First operand 26775 states and 47874 transitions. Second operand 7 states. [2020-12-22 05:57:17,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:17,607 INFO L93 Difference]: Finished difference Result 77619 states and 139981 transitions. [2020-12-22 05:57:17,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:57:17,608 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-12-22 05:57:17,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:17,676 INFO L225 Difference]: With dead ends: 77619 [2020-12-22 05:57:17,676 INFO L226 Difference]: Without dead ends: 58265 [2020-12-22 05:57:17,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:57:17,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58265 states. [2020-12-22 05:57:19,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58265 to 26856. [2020-12-22 05:57:19,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26856 states. [2020-12-22 05:57:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26856 states to 26856 states and 47955 transitions. [2020-12-22 05:57:19,422 INFO L78 Accepts]: Start accepts. Automaton has 26856 states and 47955 transitions. Word has length 232 [2020-12-22 05:57:19,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:19,422 INFO L481 AbstractCegarLoop]: Abstraction has 26856 states and 47955 transitions. [2020-12-22 05:57:19,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:57:19,422 INFO L276 IsEmpty]: Start isEmpty. Operand 26856 states and 47955 transitions. [2020-12-22 05:57:19,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-12-22 05:57:19,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:19,443 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, 1, 1, 1, 1] [2020-12-22 05:57:19,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-22 05:57:19,443 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 05:57:19,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:19,444 INFO L82 PathProgramCache]: Analyzing trace with hash -2031212003, now seen corresponding path program 1 times [2020-12-22 05:57:19,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:19,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703280979] [2020-12-22 05:57:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:19,603 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 05:57:19,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703280979] [2020-12-22 05:57:19,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:19,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 05:57:19,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85777333] [2020-12-22 05:57:19,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 05:57:19,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:19,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 05:57:19,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 05:57:19,606 INFO L87 Difference]: Start difference. First operand 26856 states and 47955 transitions. Second operand 5 states. [2020-12-22 05:57:21,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:21,198 INFO L93 Difference]: Finished difference Result 41897 states and 74268 transitions. [2020-12-22 05:57:21,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 05:57:21,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 236 [2020-12-22 05:57:21,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:21,230 INFO L225 Difference]: With dead ends: 41897 [2020-12-22 05:57:21,230 INFO L226 Difference]: Without dead ends: 26904 [2020-12-22 05:57:21,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:57:21,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26904 states. [2020-12-22 05:57:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26904 to 26856. [2020-12-22 05:57:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26856 states. [2020-12-22 05:57:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26856 states to 26856 states and 47941 transitions. [2020-12-22 05:57:22,902 INFO L78 Accepts]: Start accepts. Automaton has 26856 states and 47941 transitions. Word has length 236 [2020-12-22 05:57:22,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:22,902 INFO L481 AbstractCegarLoop]: Abstraction has 26856 states and 47941 transitions. [2020-12-22 05:57:22,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 05:57:22,902 INFO L276 IsEmpty]: Start isEmpty. Operand 26856 states and 47941 transitions. [2020-12-22 05:57:22,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-12-22 05:57:22,925 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:22,925 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, 1, 1, 1, 1] [2020-12-22 05:57:22,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-22 05:57:22,925 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:22,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:22,926 INFO L82 PathProgramCache]: Analyzing trace with hash 406751779, now seen corresponding path program 1 times [2020-12-22 05:57:22,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:22,926 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124206752] [2020-12-22 05:57:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:23,072 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 05:57:23,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124206752] [2020-12-22 05:57:23,072 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:23,072 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:23,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269517146] [2020-12-22 05:57:23,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:23,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:23,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:23,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:23,074 INFO L87 Difference]: Start difference. First operand 26856 states and 47941 transitions. Second operand 4 states. [2020-12-22 05:57:27,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:27,037 INFO L93 Difference]: Finished difference Result 48746 states and 86448 transitions. [2020-12-22 05:57:27,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:57:27,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 236 [2020-12-22 05:57:27,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:27,075 INFO L225 Difference]: With dead ends: 48746 [2020-12-22 05:57:27,076 INFO L226 Difference]: Without dead ends: 33831 [2020-12-22 05:57:27,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:27,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33831 states. [2020-12-22 05:57:29,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33831 to 33704. [2020-12-22 05:57:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33704 states. [2020-12-22 05:57:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33704 states to 33704 states and 59483 transitions. [2020-12-22 05:57:29,087 INFO L78 Accepts]: Start accepts. Automaton has 33704 states and 59483 transitions. Word has length 236 [2020-12-22 05:57:29,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:29,087 INFO L481 AbstractCegarLoop]: Abstraction has 33704 states and 59483 transitions. [2020-12-22 05:57:29,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:29,088 INFO L276 IsEmpty]: Start isEmpty. Operand 33704 states and 59483 transitions. [2020-12-22 05:57:29,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-12-22 05:57:29,107 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:29,107 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, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:29,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-12-22 05:57:29,108 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:29,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:29,108 INFO L82 PathProgramCache]: Analyzing trace with hash -344315925, now seen corresponding path program 1 times [2020-12-22 05:57:29,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:29,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049122726] [2020-12-22 05:57:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:57:29,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049122726] [2020-12-22 05:57:29,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:29,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:29,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712329298] [2020-12-22 05:57:29,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:29,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:29,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:29,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:29,228 INFO L87 Difference]: Start difference. First operand 33704 states and 59483 transitions. Second operand 3 states. [2020-12-22 05:57:32,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:32,684 INFO L93 Difference]: Finished difference Result 61806 states and 108623 transitions. [2020-12-22 05:57:32,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:32,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 239 [2020-12-22 05:57:32,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:32,731 INFO L225 Difference]: With dead ends: 61806 [2020-12-22 05:57:32,731 INFO L226 Difference]: Without dead ends: 40699 [2020-12-22 05:57:32,746 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 05:57:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40699 states. [2020-12-22 05:57:35,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40699 to 40674. [2020-12-22 05:57:35,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40674 states. [2020-12-22 05:57:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40674 states to 40674 states and 71669 transitions. [2020-12-22 05:57:35,438 INFO L78 Accepts]: Start accepts. Automaton has 40674 states and 71669 transitions. Word has length 239 [2020-12-22 05:57:35,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:35,438 INFO L481 AbstractCegarLoop]: Abstraction has 40674 states and 71669 transitions. [2020-12-22 05:57:35,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:35,439 INFO L276 IsEmpty]: Start isEmpty. Operand 40674 states and 71669 transitions. [2020-12-22 05:57:35,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-12-22 05:57:35,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:35,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:57:35,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-12-22 05:57:35,463 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:35,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1633404307, now seen corresponding path program 1 times [2020-12-22 05:57:35,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:35,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521155566] [2020-12-22 05:57:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:35,607 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 05:57:35,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521155566] [2020-12-22 05:57:35,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:35,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:35,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001516504] [2020-12-22 05:57:35,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:35,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:35,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:35,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:35,609 INFO L87 Difference]: Start difference. First operand 40674 states and 71669 transitions. Second operand 4 states. [2020-12-22 05:57:40,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:40,313 INFO L93 Difference]: Finished difference Result 73854 states and 129745 transitions. [2020-12-22 05:57:40,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:57:40,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 240 [2020-12-22 05:57:40,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:40,370 INFO L225 Difference]: With dead ends: 73854 [2020-12-22 05:57:40,371 INFO L226 Difference]: Without dead ends: 45581 [2020-12-22 05:57:40,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45581 states. [2020-12-22 05:57:42,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45581 to 40142. [2020-12-22 05:57:42,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40142 states. [2020-12-22 05:57:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40142 states to 40142 states and 70822 transitions. [2020-12-22 05:57:42,843 INFO L78 Accepts]: Start accepts. Automaton has 40142 states and 70822 transitions. Word has length 240 [2020-12-22 05:57:42,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:42,844 INFO L481 AbstractCegarLoop]: Abstraction has 40142 states and 70822 transitions. [2020-12-22 05:57:42,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 05:57:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 40142 states and 70822 transitions. [2020-12-22 05:57:42,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-12-22 05:57:42,871 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:42,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:42,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-12-22 05:57:42,871 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:42,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:42,872 INFO L82 PathProgramCache]: Analyzing trace with hash -731635109, now seen corresponding path program 1 times [2020-12-22 05:57:42,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:42,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557326385] [2020-12-22 05:57:42,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:42,981 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 05:57:42,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557326385] [2020-12-22 05:57:42,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:42,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:42,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887058967] [2020-12-22 05:57:42,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:42,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:42,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:42,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:42,983 INFO L87 Difference]: Start difference. First operand 40142 states and 70822 transitions. Second operand 3 states. [2020-12-22 05:57:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:47,049 INFO L93 Difference]: Finished difference Result 70286 states and 123357 transitions. [2020-12-22 05:57:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:47,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 241 [2020-12-22 05:57:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:47,111 INFO L225 Difference]: With dead ends: 70286 [2020-12-22 05:57:47,111 INFO L226 Difference]: Without dead ends: 46934 [2020-12-22 05:57:47,131 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 05:57:47,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46934 states. [2020-12-22 05:57:50,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46934 to 46882. [2020-12-22 05:57:50,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46882 states. [2020-12-22 05:57:50,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46882 states to 46882 states and 82516 transitions. [2020-12-22 05:57:50,281 INFO L78 Accepts]: Start accepts. Automaton has 46882 states and 82516 transitions. Word has length 241 [2020-12-22 05:57:50,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:50,281 INFO L481 AbstractCegarLoop]: Abstraction has 46882 states and 82516 transitions. [2020-12-22 05:57:50,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:50,282 INFO L276 IsEmpty]: Start isEmpty. Operand 46882 states and 82516 transitions. [2020-12-22 05:57:50,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-12-22 05:57:50,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:50,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:50,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-12-22 05:57:50,304 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:50,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:50,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1427909383, now seen corresponding path program 1 times [2020-12-22 05:57:50,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:50,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020640279] [2020-12-22 05:57:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:50,514 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 05:57:50,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020640279] [2020-12-22 05:57:50,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:50,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:50,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232774134] [2020-12-22 05:57:50,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 05:57:50,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:50,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 05:57:50,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 05:57:50,517 INFO L87 Difference]: Start difference. First operand 46882 states and 82516 transitions. Second operand 3 states. [2020-12-22 05:57:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:57:55,850 INFO L93 Difference]: Finished difference Result 116041 states and 205867 transitions. [2020-12-22 05:57:55,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 05:57:55,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 243 [2020-12-22 05:57:55,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:57:55,946 INFO L225 Difference]: With dead ends: 116041 [2020-12-22 05:57:55,946 INFO L226 Difference]: Without dead ends: 75255 [2020-12-22 05:57:55,982 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 05:57:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75255 states. [2020-12-22 05:57:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75255 to 46600. [2020-12-22 05:57:59,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46600 states. [2020-12-22 05:57:59,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46600 states to 46600 states and 81670 transitions. [2020-12-22 05:57:59,319 INFO L78 Accepts]: Start accepts. Automaton has 46600 states and 81670 transitions. Word has length 243 [2020-12-22 05:57:59,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:57:59,319 INFO L481 AbstractCegarLoop]: Abstraction has 46600 states and 81670 transitions. [2020-12-22 05:57:59,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 05:57:59,319 INFO L276 IsEmpty]: Start isEmpty. Operand 46600 states and 81670 transitions. [2020-12-22 05:57:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-12-22 05:57:59,342 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:57:59,342 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:57:59,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-12-22 05:57:59,342 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:57:59,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:57:59,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1367350635, now seen corresponding path program 1 times [2020-12-22 05:57:59,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:57:59,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688335968] [2020-12-22 05:57:59,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:57:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:57:59,481 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 05:57:59,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688335968] [2020-12-22 05:57:59,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:57:59,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 05:57:59,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415445229] [2020-12-22 05:57:59,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 05:57:59,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:57:59,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 05:57:59,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 05:57:59,483 INFO L87 Difference]: Start difference. First operand 46600 states and 81670 transitions. Second operand 4 states. [2020-12-22 05:58:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:58:04,410 INFO L93 Difference]: Finished difference Result 80808 states and 141186 transitions. [2020-12-22 05:58:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 05:58:04,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 243 [2020-12-22 05:58:04,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:58:04,605 INFO L225 Difference]: With dead ends: 80808 [2020-12-22 05:58:04,605 INFO L226 Difference]: Without dead ends: 53215 [2020-12-22 05:58:04,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 05:58:04,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53215 states.