/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_spec2_product09.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:03:16,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:03:16,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:03:16,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:03:16,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:03:16,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:03:16,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:03:16,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:03:16,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:03:16,979 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:03:16,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:03:16,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:03:16,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:03:16,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:03:16,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:03:16,987 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:03:16,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:03:16,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:03:16,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:03:16,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:03:16,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:03:16,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:03:17,000 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:03:17,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:03:17,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:03:17,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:03:17,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:03:17,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:03:17,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:03:17,047 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:03:17,047 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:03:17,048 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:03:17,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:03:17,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:03:17,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:03:17,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:03:17,053 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:03:17,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:03:17,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:03:17,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:03:17,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:03:17,084 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:03:17,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:03:17,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:03:17,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:03:17,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:03:17,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:03:17,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:03:17,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:03:17,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:03:17,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:03:17,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:03:17,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:03:17,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:03:17,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:03:17,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:03:17,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:03:17,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:03:17,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:03:17,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:03:17,090 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:03:17,090 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:03:17,090 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:03:17,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:03:17,512 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:03:17,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:03:17,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:03:17,519 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:03:17,521 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2020-12-22 06:03:17,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7380f6c/b22088dfac4f4e4dbffc4d1764611670/FLAG1de417b16 [2020-12-22 06:03:18,442 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:03:18,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product09.cil.c [2020-12-22 06:03:18,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7380f6c/b22088dfac4f4e4dbffc4d1764611670/FLAG1de417b16 [2020-12-22 06:03:18,655 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7380f6c/b22088dfac4f4e4dbffc4d1764611670 [2020-12-22 06:03:18,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:03:18,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:03:18,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:03:18,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:03:18,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:03:18,675 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:03:18" (1/1) ... [2020-12-22 06:03:18,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5097d3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:18, skipping insertion in model container [2020-12-22 06:03:18,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:03:18" (1/1) ... [2020-12-22 06:03:18,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:03:18,811 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:03:19,353 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_spec2_product09.cil.c[28518,28531] [2020-12-22 06:03:19,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:03:19,725 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:03:19,795 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_spec2_product09.cil.c[28518,28531] [2020-12-22 06:03:19,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:03:19,921 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:03:19,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19 WrapperNode [2020-12-22 06:03:19,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:03:19,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:03:19,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:03:19,924 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:03:19,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... [2020-12-22 06:03:19,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... [2020-12-22 06:03:20,155 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:03:20,156 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:03:20,156 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:03:20,156 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:03:20,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... [2020-12-22 06:03:20,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... [2020-12-22 06:03:20,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... [2020-12-22 06:03:20,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... [2020-12-22 06:03:20,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... [2020-12-22 06:03:20,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... [2020-12-22 06:03:20,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... [2020-12-22 06:03:20,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:03:20,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:03:20,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:03:20,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:03:20,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:03:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:03:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:03:20,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:03:20,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:03:26,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:03:26,244 INFO L299 CfgBuilder]: Removed 505 assume(true) statements. [2020-12-22 06:03:26,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:03:26 BoogieIcfgContainer [2020-12-22 06:03:26,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:03:26,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:03:26,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:03:26,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:03:26,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:03:18" (1/3) ... [2020-12-22 06:03:26,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3cead8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:03:26, skipping insertion in model container [2020-12-22 06:03:26,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:03:19" (2/3) ... [2020-12-22 06:03:26,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3cead8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:03:26, skipping insertion in model container [2020-12-22 06:03:26,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:03:26" (3/3) ... [2020-12-22 06:03:26,259 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product09.cil.c [2020-12-22 06:03:26,266 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:03:26,273 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:03:26,293 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:03:26,338 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:03:26,338 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:03:26,338 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:03:26,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:03:26,339 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:03:26,339 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:03:26,339 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:03:26,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:03:26,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states. [2020-12-22 06:03:26,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:03:26,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:26,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:26,410 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:26,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash 554208340, now seen corresponding path program 1 times [2020-12-22 06:03:26,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:26,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538421395] [2020-12-22 06:03:26,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:26,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:26,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538421395] [2020-12-22 06:03:26,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:26,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:26,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92139404] [2020-12-22 06:03:26,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:26,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:26,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:26,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:26,934 INFO L87 Difference]: Start difference. First operand 2320 states. Second operand 3 states. [2020-12-22 06:03:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:27,124 INFO L93 Difference]: Finished difference Result 4631 states and 8785 transitions. [2020-12-22 06:03:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:27,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-12-22 06:03:27,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:27,159 INFO L225 Difference]: With dead ends: 4631 [2020-12-22 06:03:27,160 INFO L226 Difference]: Without dead ends: 2316 [2020-12-22 06:03:27,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:27,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2020-12-22 06:03:27,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2316. [2020-12-22 06:03:27,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2316 states. [2020-12-22 06:03:27,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 4383 transitions. [2020-12-22 06:03:27,319 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 4383 transitions. Word has length 38 [2020-12-22 06:03:27,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:27,319 INFO L481 AbstractCegarLoop]: Abstraction has 2316 states and 4383 transitions. [2020-12-22 06:03:27,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:27,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 4383 transitions. [2020-12-22 06:03:27,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 06:03:27,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:27,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:27,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:03:27,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:27,325 INFO L82 PathProgramCache]: Analyzing trace with hash 2135331408, now seen corresponding path program 1 times [2020-12-22 06:03:27,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:27,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247720990] [2020-12-22 06:03:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:27,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247720990] [2020-12-22 06:03:27,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:27,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:03:27,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414839212] [2020-12-22 06:03:27,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:03:27,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:27,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:03:27,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:03:27,512 INFO L87 Difference]: Start difference. First operand 2316 states and 4383 transitions. Second operand 6 states. [2020-12-22 06:03:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:27,733 INFO L93 Difference]: Finished difference Result 4583 states and 8682 transitions. [2020-12-22 06:03:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:27,733 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-12-22 06:03:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:27,748 INFO L225 Difference]: With dead ends: 4583 [2020-12-22 06:03:27,748 INFO L226 Difference]: Without dead ends: 2310 [2020-12-22 06:03:27,753 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 06:03:27,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2020-12-22 06:03:27,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2310. [2020-12-22 06:03:27,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2020-12-22 06:03:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 4370 transitions. [2020-12-22 06:03:27,835 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 4370 transitions. Word has length 45 [2020-12-22 06:03:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:27,836 INFO L481 AbstractCegarLoop]: Abstraction has 2310 states and 4370 transitions. [2020-12-22 06:03:27,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:03:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 4370 transitions. [2020-12-22 06:03:27,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-22 06:03:27,842 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:27,842 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] [2020-12-22 06:03:27,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:03:27,845 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:27,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:27,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1117060750, now seen corresponding path program 1 times [2020-12-22 06:03:27,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:27,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763728940] [2020-12-22 06:03:27,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:28,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763728940] [2020-12-22 06:03:28,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:28,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:28,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508298263] [2020-12-22 06:03:28,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:28,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:28,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:28,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:28,027 INFO L87 Difference]: Start difference. First operand 2310 states and 4370 transitions. Second operand 4 states. [2020-12-22 06:03:28,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:28,276 INFO L93 Difference]: Finished difference Result 4577 states and 8669 transitions. [2020-12-22 06:03:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:28,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-12-22 06:03:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:28,292 INFO L225 Difference]: With dead ends: 4577 [2020-12-22 06:03:28,292 INFO L226 Difference]: Without dead ends: 2310 [2020-12-22 06:03:28,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:28,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2020-12-22 06:03:28,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2310. [2020-12-22 06:03:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2020-12-22 06:03:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 4366 transitions. [2020-12-22 06:03:28,412 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 4366 transitions. Word has length 46 [2020-12-22 06:03:28,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:28,422 INFO L481 AbstractCegarLoop]: Abstraction has 2310 states and 4366 transitions. [2020-12-22 06:03:28,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 4366 transitions. [2020-12-22 06:03:28,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-22 06:03:28,428 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:28,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:28,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:03:28,429 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:28,430 INFO L82 PathProgramCache]: Analyzing trace with hash 818631949, now seen corresponding path program 1 times [2020-12-22 06:03:28,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:28,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398171422] [2020-12-22 06:03:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:28,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398171422] [2020-12-22 06:03:28,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:28,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:28,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977807561] [2020-12-22 06:03:28,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:28,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:28,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:28,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:28,560 INFO L87 Difference]: Start difference. First operand 2310 states and 4366 transitions. Second operand 4 states. [2020-12-22 06:03:28,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:28,762 INFO L93 Difference]: Finished difference Result 4577 states and 8665 transitions. [2020-12-22 06:03:28,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:28,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-12-22 06:03:28,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:28,777 INFO L225 Difference]: With dead ends: 4577 [2020-12-22 06:03:28,777 INFO L226 Difference]: Without dead ends: 2310 [2020-12-22 06:03:28,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:28,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2020-12-22 06:03:28,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2310. [2020-12-22 06:03:28,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2020-12-22 06:03:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 4362 transitions. [2020-12-22 06:03:28,881 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 4362 transitions. Word has length 47 [2020-12-22 06:03:28,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:28,881 INFO L481 AbstractCegarLoop]: Abstraction has 2310 states and 4362 transitions. [2020-12-22 06:03:28,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:28,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 4362 transitions. [2020-12-22 06:03:28,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:03:28,883 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:28,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:28,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:03:28,887 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:28,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:28,887 INFO L82 PathProgramCache]: Analyzing trace with hash 752144109, now seen corresponding path program 1 times [2020-12-22 06:03:28,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:28,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290119863] [2020-12-22 06:03:28,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:28,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:28,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290119863] [2020-12-22 06:03:28,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:28,992 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:28,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587457686] [2020-12-22 06:03:28,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:28,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:28,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:28,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:28,995 INFO L87 Difference]: Start difference. First operand 2310 states and 4362 transitions. Second operand 4 states. [2020-12-22 06:03:29,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:29,176 INFO L93 Difference]: Finished difference Result 4577 states and 8661 transitions. [2020-12-22 06:03:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:29,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-22 06:03:29,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:29,193 INFO L225 Difference]: With dead ends: 4577 [2020-12-22 06:03:29,193 INFO L226 Difference]: Without dead ends: 2310 [2020-12-22 06:03:29,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:29,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2310 states. [2020-12-22 06:03:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2310 to 2310. [2020-12-22 06:03:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2310 states. [2020-12-22 06:03:29,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2310 states to 2310 states and 4358 transitions. [2020-12-22 06:03:29,348 INFO L78 Accepts]: Start accepts. Automaton has 2310 states and 4358 transitions. Word has length 48 [2020-12-22 06:03:29,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:29,350 INFO L481 AbstractCegarLoop]: Abstraction has 2310 states and 4358 transitions. [2020-12-22 06:03:29,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:29,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2310 states and 4358 transitions. [2020-12-22 06:03:29,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-12-22 06:03:29,354 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:29,354 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:29,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:03:29,355 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:29,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:29,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1972624787, now seen corresponding path program 1 times [2020-12-22 06:03:29,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:29,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135363957] [2020-12-22 06:03:29,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:29,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:29,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135363957] [2020-12-22 06:03:29,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:29,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:29,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700257112] [2020-12-22 06:03:29,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:29,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:29,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:29,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:29,468 INFO L87 Difference]: Start difference. First operand 2310 states and 4358 transitions. Second operand 4 states. [2020-12-22 06:03:29,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:29,588 INFO L93 Difference]: Finished difference Result 4577 states and 8657 transitions. [2020-12-22 06:03:29,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:29,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-12-22 06:03:29,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:29,603 INFO L225 Difference]: With dead ends: 4577 [2020-12-22 06:03:29,603 INFO L226 Difference]: Without dead ends: 2289 [2020-12-22 06:03:29,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-12-22 06:03:29,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2289. [2020-12-22 06:03:29,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-12-22 06:03:29,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 4324 transitions. [2020-12-22 06:03:29,699 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 4324 transitions. Word has length 48 [2020-12-22 06:03:29,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:29,699 INFO L481 AbstractCegarLoop]: Abstraction has 2289 states and 4324 transitions. [2020-12-22 06:03:29,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:29,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 4324 transitions. [2020-12-22 06:03:29,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-22 06:03:29,701 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:29,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:29,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:03:29,702 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:29,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:29,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1252398296, now seen corresponding path program 1 times [2020-12-22 06:03:29,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:29,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271064388] [2020-12-22 06:03:29,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:29,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:29,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271064388] [2020-12-22 06:03:29,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:29,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:29,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905478810] [2020-12-22 06:03:29,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:29,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:29,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:29,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:29,786 INFO L87 Difference]: Start difference. First operand 2289 states and 4324 transitions. Second operand 4 states. [2020-12-22 06:03:29,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:29,920 INFO L93 Difference]: Finished difference Result 4556 states and 8623 transitions. [2020-12-22 06:03:29,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:29,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-12-22 06:03:29,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:29,934 INFO L225 Difference]: With dead ends: 4556 [2020-12-22 06:03:29,934 INFO L226 Difference]: Without dead ends: 2289 [2020-12-22 06:03:29,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:29,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-12-22 06:03:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2289. [2020-12-22 06:03:30,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-12-22 06:03:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 4323 transitions. [2020-12-22 06:03:30,036 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 4323 transitions. Word has length 49 [2020-12-22 06:03:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:30,036 INFO L481 AbstractCegarLoop]: Abstraction has 2289 states and 4323 transitions. [2020-12-22 06:03:30,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 4323 transitions. [2020-12-22 06:03:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-22 06:03:30,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:30,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:30,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:03:30,039 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:30,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:30,040 INFO L82 PathProgramCache]: Analyzing trace with hash 1087877224, now seen corresponding path program 1 times [2020-12-22 06:03:30,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:30,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657152004] [2020-12-22 06:03:30,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:30,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657152004] [2020-12-22 06:03:30,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:30,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:30,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214506237] [2020-12-22 06:03:30,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:30,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:30,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:30,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:30,136 INFO L87 Difference]: Start difference. First operand 2289 states and 4323 transitions. Second operand 4 states. [2020-12-22 06:03:30,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:30,304 INFO L93 Difference]: Finished difference Result 4556 states and 8622 transitions. [2020-12-22 06:03:30,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:30,304 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-12-22 06:03:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:30,320 INFO L225 Difference]: With dead ends: 4556 [2020-12-22 06:03:30,320 INFO L226 Difference]: Without dead ends: 2289 [2020-12-22 06:03:30,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-12-22 06:03:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2289. [2020-12-22 06:03:30,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-12-22 06:03:30,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 4322 transitions. [2020-12-22 06:03:30,437 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 4322 transitions. Word has length 50 [2020-12-22 06:03:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:30,440 INFO L481 AbstractCegarLoop]: Abstraction has 2289 states and 4322 transitions. [2020-12-22 06:03:30,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:30,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 4322 transitions. [2020-12-22 06:03:30,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 06:03:30,443 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:30,443 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] [2020-12-22 06:03:30,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:03:30,443 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:30,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash 678554947, now seen corresponding path program 1 times [2020-12-22 06:03:30,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:30,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163798618] [2020-12-22 06:03:30,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:30,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:30,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163798618] [2020-12-22 06:03:30,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:30,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:03:30,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605653839] [2020-12-22 06:03:30,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:03:30,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:30,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:03:30,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:03:30,574 INFO L87 Difference]: Start difference. First operand 2289 states and 4322 transitions. Second operand 7 states. [2020-12-22 06:03:30,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:30,862 INFO L93 Difference]: Finished difference Result 4550 states and 8610 transitions. [2020-12-22 06:03:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:03:30,862 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-12-22 06:03:30,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:30,876 INFO L225 Difference]: With dead ends: 4550 [2020-12-22 06:03:30,876 INFO L226 Difference]: Without dead ends: 2289 [2020-12-22 06:03:30,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-22 06:03:30,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-12-22 06:03:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2289. [2020-12-22 06:03:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2289 states. [2020-12-22 06:03:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 4321 transitions. [2020-12-22 06:03:30,968 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 4321 transitions. Word has length 51 [2020-12-22 06:03:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:30,968 INFO L481 AbstractCegarLoop]: Abstraction has 2289 states and 4321 transitions. [2020-12-22 06:03:30,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:03:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 4321 transitions. [2020-12-22 06:03:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-22 06:03:30,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:30,971 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:30,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:03:30,971 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:30,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash -628920557, now seen corresponding path program 1 times [2020-12-22 06:03:30,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:30,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881320602] [2020-12-22 06:03:30,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:31,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:31,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881320602] [2020-12-22 06:03:31,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:31,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:31,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264598810] [2020-12-22 06:03:31,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:31,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:31,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:31,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:31,044 INFO L87 Difference]: Start difference. First operand 2289 states and 4321 transitions. Second operand 5 states. [2020-12-22 06:03:32,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:32,680 INFO L93 Difference]: Finished difference Result 9203 states and 17357 transitions. [2020-12-22 06:03:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:03:32,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-12-22 06:03:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:32,762 INFO L225 Difference]: With dead ends: 9203 [2020-12-22 06:03:32,762 INFO L226 Difference]: Without dead ends: 6957 [2020-12-22 06:03:32,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:03:32,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2020-12-22 06:03:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 2293. [2020-12-22 06:03:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2293 states. [2020-12-22 06:03:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 4325 transitions. [2020-12-22 06:03:32,953 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 4325 transitions. Word has length 52 [2020-12-22 06:03:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:32,953 INFO L481 AbstractCegarLoop]: Abstraction has 2293 states and 4325 transitions. [2020-12-22 06:03:32,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:32,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 4325 transitions. [2020-12-22 06:03:32,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-22 06:03:32,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:32,956 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 06:03:32,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:03:32,957 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:32,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:32,957 INFO L82 PathProgramCache]: Analyzing trace with hash -238226485, now seen corresponding path program 1 times [2020-12-22 06:03:32,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:32,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312373460] [2020-12-22 06:03:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:33,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:33,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312373460] [2020-12-22 06:03:33,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:33,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:33,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161265074] [2020-12-22 06:03:33,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:33,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:33,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:33,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:33,070 INFO L87 Difference]: Start difference. First operand 2293 states and 4325 transitions. Second operand 4 states. [2020-12-22 06:03:35,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:35,066 INFO L93 Difference]: Finished difference Result 5879 states and 11102 transitions. [2020-12-22 06:03:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:35,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-12-22 06:03:35,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:35,077 INFO L225 Difference]: With dead ends: 5879 [2020-12-22 06:03:35,077 INFO L226 Difference]: Without dead ends: 3622 [2020-12-22 06:03:35,082 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 06:03:35,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2020-12-22 06:03:35,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3192. [2020-12-22 06:03:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3192 states. [2020-12-22 06:03:35,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 6027 transitions. [2020-12-22 06:03:35,232 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 6027 transitions. Word has length 53 [2020-12-22 06:03:35,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:35,232 INFO L481 AbstractCegarLoop]: Abstraction has 3192 states and 6027 transitions. [2020-12-22 06:03:35,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:35,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 6027 transitions. [2020-12-22 06:03:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-12-22 06:03:35,235 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:35,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:35,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:03:35,235 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:35,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:35,236 INFO L82 PathProgramCache]: Analyzing trace with hash -856513106, now seen corresponding path program 1 times [2020-12-22 06:03:35,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:35,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46324989] [2020-12-22 06:03:35,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:35,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46324989] [2020-12-22 06:03:35,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:35,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:35,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351216785] [2020-12-22 06:03:35,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:35,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:35,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:35,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:35,310 INFO L87 Difference]: Start difference. First operand 3192 states and 6027 transitions. Second operand 4 states. [2020-12-22 06:03:37,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:37,134 INFO L93 Difference]: Finished difference Result 6778 states and 12803 transitions. [2020-12-22 06:03:37,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:37,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-12-22 06:03:37,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:37,146 INFO L225 Difference]: With dead ends: 6778 [2020-12-22 06:03:37,147 INFO L226 Difference]: Without dead ends: 3622 [2020-12-22 06:03:37,152 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 06:03:37,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2020-12-22 06:03:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3192. [2020-12-22 06:03:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3192 states. [2020-12-22 06:03:37,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 6025 transitions. [2020-12-22 06:03:37,309 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 6025 transitions. Word has length 54 [2020-12-22 06:03:37,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:37,310 INFO L481 AbstractCegarLoop]: Abstraction has 3192 states and 6025 transitions. [2020-12-22 06:03:37,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 6025 transitions. [2020-12-22 06:03:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:03:37,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:37,312 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 06:03:37,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:03:37,313 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash -15752717, now seen corresponding path program 1 times [2020-12-22 06:03:37,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:37,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887861817] [2020-12-22 06:03:37,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:37,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887861817] [2020-12-22 06:03:37,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:37,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:37,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980610481] [2020-12-22 06:03:37,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:03:37,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:37,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:03:37,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:37,400 INFO L87 Difference]: Start difference. First operand 3192 states and 6025 transitions. Second operand 5 states. [2020-12-22 06:03:38,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:38,576 INFO L93 Difference]: Finished difference Result 24132 states and 45751 transitions. [2020-12-22 06:03:38,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:03:38,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 06:03:38,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:38,655 INFO L225 Difference]: With dead ends: 24132 [2020-12-22 06:03:38,655 INFO L226 Difference]: Without dead ends: 20985 [2020-12-22 06:03:38,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:03:38,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20985 states. [2020-12-22 06:03:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20985 to 5730. [2020-12-22 06:03:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5730 states. [2020-12-22 06:03:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5730 states to 5730 states and 10839 transitions. [2020-12-22 06:03:39,220 INFO L78 Accepts]: Start accepts. Automaton has 5730 states and 10839 transitions. Word has length 55 [2020-12-22 06:03:39,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:39,221 INFO L481 AbstractCegarLoop]: Abstraction has 5730 states and 10839 transitions. [2020-12-22 06:03:39,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:03:39,221 INFO L276 IsEmpty]: Start isEmpty. Operand 5730 states and 10839 transitions. [2020-12-22 06:03:39,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 06:03:39,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:39,224 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 06:03:39,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:03:39,224 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:39,225 INFO L82 PathProgramCache]: Analyzing trace with hash -149766223, now seen corresponding path program 1 times [2020-12-22 06:03:39,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:39,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34552935] [2020-12-22 06:03:39,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:39,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34552935] [2020-12-22 06:03:39,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:39,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:03:39,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651973349] [2020-12-22 06:03:39,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:39,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:39,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:39,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:39,295 INFO L87 Difference]: Start difference. First operand 5730 states and 10839 transitions. Second operand 4 states. [2020-12-22 06:03:39,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:39,730 INFO L93 Difference]: Finished difference Result 10140 states and 19070 transitions. [2020-12-22 06:03:39,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:03:39,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-12-22 06:03:39,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:39,753 INFO L225 Difference]: With dead ends: 10140 [2020-12-22 06:03:39,753 INFO L226 Difference]: Without dead ends: 7827 [2020-12-22 06:03:39,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:03:39,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7827 states. [2020-12-22 06:03:40,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7827 to 5736. [2020-12-22 06:03:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5736 states. [2020-12-22 06:03:40,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5736 states to 5736 states and 10845 transitions. [2020-12-22 06:03:40,136 INFO L78 Accepts]: Start accepts. Automaton has 5736 states and 10845 transitions. Word has length 55 [2020-12-22 06:03:40,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:40,136 INFO L481 AbstractCegarLoop]: Abstraction has 5736 states and 10845 transitions. [2020-12-22 06:03:40,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:40,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5736 states and 10845 transitions. [2020-12-22 06:03:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:03:40,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:40,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:40,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:03:40,139 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:40,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:40,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1157707406, now seen corresponding path program 1 times [2020-12-22 06:03:40,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:40,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861452474] [2020-12-22 06:03:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:40,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861452474] [2020-12-22 06:03:40,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:40,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:03:40,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862941944] [2020-12-22 06:03:40,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:40,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:40,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:40,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:40,213 INFO L87 Difference]: Start difference. First operand 5736 states and 10845 transitions. Second operand 3 states. [2020-12-22 06:03:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:40,792 INFO L93 Difference]: Finished difference Result 8461 states and 15956 transitions. [2020-12-22 06:03:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:40,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2020-12-22 06:03:40,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:40,807 INFO L225 Difference]: With dead ends: 8461 [2020-12-22 06:03:40,808 INFO L226 Difference]: Without dead ends: 5881 [2020-12-22 06:03:40,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5881 states. [2020-12-22 06:03:41,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5881 to 5848. [2020-12-22 06:03:41,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5848 states. [2020-12-22 06:03:41,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5848 states to 5848 states and 10976 transitions. [2020-12-22 06:03:41,083 INFO L78 Accepts]: Start accepts. Automaton has 5848 states and 10976 transitions. Word has length 60 [2020-12-22 06:03:41,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:41,084 INFO L481 AbstractCegarLoop]: Abstraction has 5848 states and 10976 transitions. [2020-12-22 06:03:41,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:41,084 INFO L276 IsEmpty]: Start isEmpty. Operand 5848 states and 10976 transitions. [2020-12-22 06:03:41,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:03:41,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:41,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:41,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:03:41,086 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:41,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1743194768, now seen corresponding path program 1 times [2020-12-22 06:03:41,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:41,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850995844] [2020-12-22 06:03:41,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:41,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:41,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:41,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850995844] [2020-12-22 06:03:41,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:41,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:41,174 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283760962] [2020-12-22 06:03:41,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:03:41,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:41,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:03:41,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:03:41,175 INFO L87 Difference]: Start difference. First operand 5848 states and 10976 transitions. Second operand 4 states. [2020-12-22 06:03:41,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:41,748 INFO L93 Difference]: Finished difference Result 12831 states and 24068 transitions. [2020-12-22 06:03:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:03:41,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-12-22 06:03:41,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:41,773 INFO L225 Difference]: With dead ends: 12831 [2020-12-22 06:03:41,773 INFO L226 Difference]: Without dead ends: 10318 [2020-12-22 06:03:41,780 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 06:03:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10318 states. [2020-12-22 06:03:42,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10318 to 8252. [2020-12-22 06:03:42,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8252 states. [2020-12-22 06:03:42,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8252 states to 8252 states and 15493 transitions. [2020-12-22 06:03:42,210 INFO L78 Accepts]: Start accepts. Automaton has 8252 states and 15493 transitions. Word has length 61 [2020-12-22 06:03:42,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:42,211 INFO L481 AbstractCegarLoop]: Abstraction has 8252 states and 15493 transitions. [2020-12-22 06:03:42,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:03:42,211 INFO L276 IsEmpty]: Start isEmpty. Operand 8252 states and 15493 transitions. [2020-12-22 06:03:42,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:03:42,213 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:42,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:03:42,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:03:42,214 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:42,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:42,214 INFO L82 PathProgramCache]: Analyzing trace with hash -2129070702, now seen corresponding path program 1 times [2020-12-22 06:03:42,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:42,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465075238] [2020-12-22 06:03:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:42,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465075238] [2020-12-22 06:03:42,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:42,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:42,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927848663] [2020-12-22 06:03:42,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:42,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:42,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:42,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:42,287 INFO L87 Difference]: Start difference. First operand 8252 states and 15493 transitions. Second operand 3 states. [2020-12-22 06:03:42,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:42,917 INFO L93 Difference]: Finished difference Result 22719 states and 42739 transitions. [2020-12-22 06:03:42,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:42,917 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-22 06:03:42,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:42,938 INFO L225 Difference]: With dead ends: 22719 [2020-12-22 06:03:42,939 INFO L226 Difference]: Without dead ends: 16000 [2020-12-22 06:03:42,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:42,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16000 states. [2020-12-22 06:03:43,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16000 to 16000. [2020-12-22 06:03:43,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16000 states. [2020-12-22 06:03:43,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16000 states to 16000 states and 30113 transitions. [2020-12-22 06:03:43,713 INFO L78 Accepts]: Start accepts. Automaton has 16000 states and 30113 transitions. Word has length 61 [2020-12-22 06:03:43,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:43,714 INFO L481 AbstractCegarLoop]: Abstraction has 16000 states and 30113 transitions. [2020-12-22 06:03:43,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:43,714 INFO L276 IsEmpty]: Start isEmpty. Operand 16000 states and 30113 transitions. [2020-12-22 06:03:43,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:03:43,716 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:43,716 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] [2020-12-22 06:03:43,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:03:43,717 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:43,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:43,718 INFO L82 PathProgramCache]: Analyzing trace with hash -515073122, now seen corresponding path program 1 times [2020-12-22 06:03:43,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:43,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205221351] [2020-12-22 06:03:43,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:43,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205221351] [2020-12-22 06:03:43,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:43,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:43,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716056923] [2020-12-22 06:03:43,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:43,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:43,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:43,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:43,792 INFO L87 Difference]: Start difference. First operand 16000 states and 30113 transitions. Second operand 3 states. [2020-12-22 06:03:44,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:44,771 INFO L93 Difference]: Finished difference Result 44632 states and 84042 transitions. [2020-12-22 06:03:44,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:44,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-12-22 06:03:44,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:44,815 INFO L225 Difference]: With dead ends: 44632 [2020-12-22 06:03:44,815 INFO L226 Difference]: Without dead ends: 31282 [2020-12-22 06:03:44,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:44,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31282 states. [2020-12-22 06:03:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31282 to 31280. [2020-12-22 06:03:46,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31280 states. [2020-12-22 06:03:46,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31280 states to 31280 states and 58935 transitions. [2020-12-22 06:03:46,251 INFO L78 Accepts]: Start accepts. Automaton has 31280 states and 58935 transitions. Word has length 63 [2020-12-22 06:03:46,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:46,251 INFO L481 AbstractCegarLoop]: Abstraction has 31280 states and 58935 transitions. [2020-12-22 06:03:46,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:46,251 INFO L276 IsEmpty]: Start isEmpty. Operand 31280 states and 58935 transitions. [2020-12-22 06:03:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 06:03:46,254 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:46,255 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] [2020-12-22 06:03:46,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:03:46,255 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:46,256 INFO L82 PathProgramCache]: Analyzing trace with hash 28017033, now seen corresponding path program 1 times [2020-12-22 06:03:46,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:46,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671550556] [2020-12-22 06:03:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:46,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671550556] [2020-12-22 06:03:46,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:46,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:46,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710646760] [2020-12-22 06:03:46,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:46,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:46,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:46,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:46,321 INFO L87 Difference]: Start difference. First operand 31280 states and 58935 transitions. Second operand 3 states. [2020-12-22 06:03:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:48,249 INFO L93 Difference]: Finished difference Result 87995 states and 165755 transitions. [2020-12-22 06:03:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:48,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 06:03:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:48,359 INFO L225 Difference]: With dead ends: 87995 [2020-12-22 06:03:48,359 INFO L226 Difference]: Without dead ends: 61402 [2020-12-22 06:03:48,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:48,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61402 states. [2020-12-22 06:03:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61402 to 61398. [2020-12-22 06:03:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61398 states. [2020-12-22 06:03:51,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61398 states to 61398 states and 115723 transitions. [2020-12-22 06:03:51,295 INFO L78 Accepts]: Start accepts. Automaton has 61398 states and 115723 transitions. Word has length 64 [2020-12-22 06:03:51,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:03:51,296 INFO L481 AbstractCegarLoop]: Abstraction has 61398 states and 115723 transitions. [2020-12-22 06:03:51,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:03:51,296 INFO L276 IsEmpty]: Start isEmpty. Operand 61398 states and 115723 transitions. [2020-12-22 06:03:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:03:51,304 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:03:51,304 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] [2020-12-22 06:03:51,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:03:51,305 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:03:51,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:03:51,306 INFO L82 PathProgramCache]: Analyzing trace with hash 868545221, now seen corresponding path program 1 times [2020-12-22 06:03:51,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:03:51,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762248787] [2020-12-22 06:03:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:03:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:03:51,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:03:51,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762248787] [2020-12-22 06:03:51,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:03:51,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:03:51,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823162497] [2020-12-22 06:03:51,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:03:51,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:03:51,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:03:51,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:51,599 INFO L87 Difference]: Start difference. First operand 61398 states and 115723 transitions. Second operand 3 states. [2020-12-22 06:03:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:03:55,335 INFO L93 Difference]: Finished difference Result 173778 states and 327360 transitions. [2020-12-22 06:03:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:03:55,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2020-12-22 06:03:55,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:03:55,726 INFO L225 Difference]: With dead ends: 173778 [2020-12-22 06:03:55,727 INFO L226 Difference]: Without dead ends: 120746 [2020-12-22 06:03:55,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:03:55,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120746 states. [2020-12-22 06:04:00,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120746 to 120740. [2020-12-22 06:04:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120740 states. [2020-12-22 06:04:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120740 states to 120740 states and 227567 transitions. [2020-12-22 06:04:00,318 INFO L78 Accepts]: Start accepts. Automaton has 120740 states and 227567 transitions. Word has length 65 [2020-12-22 06:04:00,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:00,319 INFO L481 AbstractCegarLoop]: Abstraction has 120740 states and 227567 transitions. [2020-12-22 06:04:00,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:04:00,319 INFO L276 IsEmpty]: Start isEmpty. Operand 120740 states and 227567 transitions. [2020-12-22 06:04:00,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:04:00,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:00,322 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] [2020-12-22 06:04:00,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:04:00,323 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:00,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:00,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1155115282, now seen corresponding path program 1 times [2020-12-22 06:04:00,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:00,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685100790] [2020-12-22 06:04:00,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:00,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685100790] [2020-12-22 06:04:00,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:00,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:00,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815573232] [2020-12-22 06:04:00,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:04:00,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:00,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:04:00,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:04:00,386 INFO L87 Difference]: Start difference. First operand 120740 states and 227567 transitions. Second operand 3 states. [2020-12-22 06:04:07,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:07,733 INFO L93 Difference]: Finished difference Result 343441 states and 646892 transitions. [2020-12-22 06:04:07,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:04:07,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 66 [2020-12-22 06:04:07,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:08,418 INFO L225 Difference]: With dead ends: 343441 [2020-12-22 06:04:08,418 INFO L226 Difference]: Without dead ends: 237629 [2020-12-22 06:04:08,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:04:08,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237629 states. [2020-12-22 06:04:16,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237629 to 237621. [2020-12-22 06:04:16,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 237621 states. [2020-12-22 06:04:17,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237621 states to 237621 states and 447744 transitions. [2020-12-22 06:04:17,650 INFO L78 Accepts]: Start accepts. Automaton has 237621 states and 447744 transitions. Word has length 66 [2020-12-22 06:04:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:17,650 INFO L481 AbstractCegarLoop]: Abstraction has 237621 states and 447744 transitions. [2020-12-22 06:04:17,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:04:17,650 INFO L276 IsEmpty]: Start isEmpty. Operand 237621 states and 447744 transitions. [2020-12-22 06:04:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 06:04:17,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:17,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:04:17,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:04:17,696 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:17,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:17,697 INFO L82 PathProgramCache]: Analyzing trace with hash -206241122, now seen corresponding path program 1 times [2020-12-22 06:04:17,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:17,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387367605] [2020-12-22 06:04:17,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:17,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:17,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387367605] [2020-12-22 06:04:17,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:17,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:04:17,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484637070] [2020-12-22 06:04:17,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:17,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:17,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:17,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:17,788 INFO L87 Difference]: Start difference. First operand 237621 states and 447744 transitions. Second operand 4 states. [2020-12-22 06:04:28,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:28,837 INFO L93 Difference]: Finished difference Result 535361 states and 1002650 transitions. [2020-12-22 06:04:28,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:04:28,838 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-22 06:04:28,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:29,700 INFO L225 Difference]: With dead ends: 535361 [2020-12-22 06:04:29,701 INFO L226 Difference]: Without dead ends: 297953 [2020-12-22 06:04:29,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:04:30,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297953 states. [2020-12-22 06:04:39,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297953 to 238007. [2020-12-22 06:04:39,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238007 states. [2020-12-22 06:04:40,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238007 states to 238007 states and 448130 transitions. [2020-12-22 06:04:40,072 INFO L78 Accepts]: Start accepts. Automaton has 238007 states and 448130 transitions. Word has length 98 [2020-12-22 06:04:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:04:40,072 INFO L481 AbstractCegarLoop]: Abstraction has 238007 states and 448130 transitions. [2020-12-22 06:04:40,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:04:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 238007 states and 448130 transitions. [2020-12-22 06:04:40,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-22 06:04:40,114 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:04:40,114 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] [2020-12-22 06:04:40,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:04:40,114 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:04:40,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:04:40,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1470142313, now seen corresponding path program 1 times [2020-12-22 06:04:40,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:04:40,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681559995] [2020-12-22 06:04:40,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:04:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:04:40,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:04:40,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681559995] [2020-12-22 06:04:40,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:04:40,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:04:40,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415514159] [2020-12-22 06:04:40,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:04:40,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:04:40,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:04:40,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:04:40,220 INFO L87 Difference]: Start difference. First operand 238007 states and 448130 transitions. Second operand 4 states. [2020-12-22 06:04:51,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:04:51,862 INFO L93 Difference]: Finished difference Result 498008 states and 935863 transitions. [2020-12-22 06:04:51,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:04:51,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-12-22 06:04:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:04:52,447 INFO L225 Difference]: With dead ends: 498008 [2020-12-22 06:04:52,447 INFO L226 Difference]: Without dead ends: 260037 [2020-12-22 06:04:52,624 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 06:04:53,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260037 states. [2020-12-22 06:05:04,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260037 to 238007. [2020-12-22 06:05:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238007 states. [2020-12-22 06:05:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238007 states to 238007 states and 448065 transitions. [2020-12-22 06:05:05,413 INFO L78 Accepts]: Start accepts. Automaton has 238007 states and 448065 transitions. Word has length 98 [2020-12-22 06:05:05,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:05,414 INFO L481 AbstractCegarLoop]: Abstraction has 238007 states and 448065 transitions. [2020-12-22 06:05:05,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:05:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 238007 states and 448065 transitions. [2020-12-22 06:05:05,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-12-22 06:05:05,481 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:05,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:05,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:05:05,482 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:05,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:05,483 INFO L82 PathProgramCache]: Analyzing trace with hash -947397308, now seen corresponding path program 1 times [2020-12-22 06:05:05,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:05,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446616014] [2020-12-22 06:05:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:05,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:05,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446616014] [2020-12-22 06:05:05,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:05,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:05:05,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742558477] [2020-12-22 06:05:05,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:05,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:05,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:05,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:05,626 INFO L87 Difference]: Start difference. First operand 238007 states and 448065 transitions. Second operand 5 states. [2020-12-22 06:05:27,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:05:27,326 INFO L93 Difference]: Finished difference Result 723852 states and 1356915 transitions. [2020-12-22 06:05:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:05:27,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-12-22 06:05:27,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:05:28,497 INFO L225 Difference]: With dead ends: 723852 [2020-12-22 06:05:28,497 INFO L226 Difference]: Without dead ends: 485875 [2020-12-22 06:05:28,725 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 06:05:29,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485875 states. [2020-12-22 06:05:42,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485875 to 266764. [2020-12-22 06:05:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266764 states. [2020-12-22 06:05:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266764 states to 266764 states and 501427 transitions. [2020-12-22 06:05:43,989 INFO L78 Accepts]: Start accepts. Automaton has 266764 states and 501427 transitions. Word has length 99 [2020-12-22 06:05:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:05:43,989 INFO L481 AbstractCegarLoop]: Abstraction has 266764 states and 501427 transitions. [2020-12-22 06:05:43,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:05:43,989 INFO L276 IsEmpty]: Start isEmpty. Operand 266764 states and 501427 transitions. [2020-12-22 06:05:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-12-22 06:05:44,024 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:05:44,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:05:44,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:05:44,024 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:05:44,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:05:44,025 INFO L82 PathProgramCache]: Analyzing trace with hash -921041874, now seen corresponding path program 1 times [2020-12-22 06:05:44,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:05:44,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462089559] [2020-12-22 06:05:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:05:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:05:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:05:44,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462089559] [2020-12-22 06:05:44,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:05:44,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:05:44,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933314780] [2020-12-22 06:05:44,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:05:44,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:05:44,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:05:44,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:05:44,159 INFO L87 Difference]: Start difference. First operand 266764 states and 501427 transitions. Second operand 5 states. [2020-12-22 06:06:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:06:16,615 INFO L93 Difference]: Finished difference Result 1069386 states and 2004924 transitions. [2020-12-22 06:06:16,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:06:16,615 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-12-22 06:06:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:06:19,548 INFO L225 Difference]: With dead ends: 1069386 [2020-12-22 06:06:19,549 INFO L226 Difference]: Without dead ends: 802823 [2020-12-22 06:06:19,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:06:20,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802823 states. [2020-12-22 06:06:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802823 to 267020. [2020-12-22 06:06:38,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267020 states. [2020-12-22 06:06:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267020 states to 267020 states and 501555 transitions. [2020-12-22 06:06:38,858 INFO L78 Accepts]: Start accepts. Automaton has 267020 states and 501555 transitions. Word has length 139 [2020-12-22 06:06:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:06:38,859 INFO L481 AbstractCegarLoop]: Abstraction has 267020 states and 501555 transitions. [2020-12-22 06:06:38,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:06:38,871 INFO L276 IsEmpty]: Start isEmpty. Operand 267020 states and 501555 transitions. [2020-12-22 06:06:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-22 06:06:38,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:06:38,921 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:06:38,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:06:38,922 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 06:06:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:06:38,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1910185574, now seen corresponding path program 1 times [2020-12-22 06:06:38,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:06:38,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216885393] [2020-12-22 06:06:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:06:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:06:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:06:39,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216885393] [2020-12-22 06:06:39,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:06:39,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:06:39,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141776736] [2020-12-22 06:06:39,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:06:39,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:06:39,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:06:39,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:06:39,071 INFO L87 Difference]: Start difference. First operand 267020 states and 501555 transitions. Second operand 3 states.