/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_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 06:07:22,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 06:07:22,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 06:07:22,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 06:07:22,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 06:07:22,270 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 06:07:22,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 06:07:22,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 06:07:22,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 06:07:22,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 06:07:22,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 06:07:22,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 06:07:22,281 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 06:07:22,282 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 06:07:22,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 06:07:22,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 06:07:22,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 06:07:22,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 06:07:22,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 06:07:22,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 06:07:22,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 06:07:22,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 06:07:22,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 06:07:22,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 06:07:22,322 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 06:07:22,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 06:07:22,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 06:07:22,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 06:07:22,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 06:07:22,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 06:07:22,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 06:07:22,335 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 06:07:22,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 06:07:22,336 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 06:07:22,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 06:07:22,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 06:07:22,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 06:07:22,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 06:07:22,399 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 06:07:22,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 06:07:22,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 06:07:22,403 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 06:07:22,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 06:07:22,405 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 06:07:22,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 06:07:22,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 06:07:22,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 06:07:22,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 06:07:22,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 06:07:22,408 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 06:07:22,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 06:07:22,409 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 06:07:22,409 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 06:07:22,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 06:07:22,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 06:07:22,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 06:07:22,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 06:07:22,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 06:07:22,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 06:07:22,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 06:07:22,413 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 06:07:22,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 06:07:22,413 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 06:07:22,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 06:07:22,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 06:07:22,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 06:07:22,801 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 06:07:22,801 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 06:07:22,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2020-12-22 06:07:22,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a3b77b2b/9315f958b8c94cd39f3acb1ffdf189f3/FLAG3a8185f32 [2020-12-22 06:07:23,712 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 06:07:23,713 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product32.cil.c [2020-12-22 06:07:23,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a3b77b2b/9315f958b8c94cd39f3acb1ffdf189f3/FLAG3a8185f32 [2020-12-22 06:07:23,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a3b77b2b/9315f958b8c94cd39f3acb1ffdf189f3 [2020-12-22 06:07:23,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 06:07:23,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 06:07:23,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 06:07:23,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 06:07:23,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 06:07:23,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:07:23" (1/1) ... [2020-12-22 06:07:23,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@728cd5cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:23, skipping insertion in model container [2020-12-22 06:07:23,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 06:07:23" (1/1) ... [2020-12-22 06:07:23,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 06:07:24,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 06:07:24,545 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_product32.cil.c[39755,39768] [2020-12-22 06:07:24,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:07:24,726 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 06:07:24,790 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_product32.cil.c[39755,39768] [2020-12-22 06:07:24,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 06:07:24,917 INFO L208 MainTranslator]: Completed translation [2020-12-22 06:07:24,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24 WrapperNode [2020-12-22 06:07:24,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 06:07:24,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 06:07:24,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 06:07:24,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 06:07:24,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (1/1) ... [2020-12-22 06:07:24,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (1/1) ... [2020-12-22 06:07:25,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 06:07:25,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 06:07:25,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 06:07:25,523 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 06:07:25,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (1/1) ... [2020-12-22 06:07:25,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (1/1) ... [2020-12-22 06:07:25,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (1/1) ... [2020-12-22 06:07:25,656 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (1/1) ... [2020-12-22 06:07:25,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (1/1) ... [2020-12-22 06:07:26,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (1/1) ... [2020-12-22 06:07:26,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (1/1) ... [2020-12-22 06:07:26,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 06:07:26,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 06:07:26,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 06:07:26,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 06:07:26,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (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 06:07:26,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 06:07:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 06:07:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 06:07:26,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 06:07:40,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 06:07:40,775 INFO L299 CfgBuilder]: Removed 1709 assume(true) statements. [2020-12-22 06:07:40,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:07:40 BoogieIcfgContainer [2020-12-22 06:07:40,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 06:07:40,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 06:07:40,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 06:07:40,791 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 06:07:40,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 06:07:23" (1/3) ... [2020-12-22 06:07:40,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd96170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:07:40, skipping insertion in model container [2020-12-22 06:07:40,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 06:07:24" (2/3) ... [2020-12-22 06:07:40,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd96170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 06:07:40, skipping insertion in model container [2020-12-22 06:07:40,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 06:07:40" (3/3) ... [2020-12-22 06:07:40,795 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product32.cil.c [2020-12-22 06:07:40,801 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 06:07:40,811 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-22 06:07:40,831 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-22 06:07:40,886 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 06:07:40,887 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 06:07:40,887 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 06:07:40,887 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 06:07:40,887 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 06:07:40,887 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 06:07:40,887 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 06:07:40,888 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 06:07:41,001 INFO L276 IsEmpty]: Start isEmpty. Operand 7188 states. [2020-12-22 06:07:41,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 06:07:41,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:41,014 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] [2020-12-22 06:07:41,014 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 06:07:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:41,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1414304943, now seen corresponding path program 1 times [2020-12-22 06:07:41,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:41,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007839327] [2020-12-22 06:07:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:41,442 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 06:07:41,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007839327] [2020-12-22 06:07:41,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:41,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:07:41,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877463083] [2020-12-22 06:07:41,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:41,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:41,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:41,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:41,473 INFO L87 Difference]: Start difference. First operand 7188 states. Second operand 3 states. [2020-12-22 06:07:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:41,941 INFO L93 Difference]: Finished difference Result 14367 states and 27097 transitions. [2020-12-22 06:07:41,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:41,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 06:07:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:42,047 INFO L225 Difference]: With dead ends: 14367 [2020-12-22 06:07:42,047 INFO L226 Difference]: Without dead ends: 7184 [2020-12-22 06:07:42,075 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 06:07:42,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2020-12-22 06:07:42,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7184. [2020-12-22 06:07:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7184 states. [2020-12-22 06:07:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7184 states to 7184 states and 13539 transitions. [2020-12-22 06:07:42,725 INFO L78 Accepts]: Start accepts. Automaton has 7184 states and 13539 transitions. Word has length 27 [2020-12-22 06:07:42,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:42,726 INFO L481 AbstractCegarLoop]: Abstraction has 7184 states and 13539 transitions. [2020-12-22 06:07:42,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:42,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7184 states and 13539 transitions. [2020-12-22 06:07:42,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-22 06:07:42,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:42,740 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:42,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 06:07:42,741 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 06:07:42,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:42,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1675267835, now seen corresponding path program 1 times [2020-12-22 06:07:42,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:42,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742472084] [2020-12-22 06:07:42,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:42,947 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 06:07:42,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742472084] [2020-12-22 06:07:42,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:42,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 06:07:42,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971345406] [2020-12-22 06:07:42,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:07:42,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:42,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:07:42,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:07:42,953 INFO L87 Difference]: Start difference. First operand 7184 states and 13539 transitions. Second operand 6 states. [2020-12-22 06:07:43,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:43,814 INFO L93 Difference]: Finished difference Result 14319 states and 26994 transitions. [2020-12-22 06:07:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 06:07:43,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-12-22 06:07:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:43,857 INFO L225 Difference]: With dead ends: 14319 [2020-12-22 06:07:43,858 INFO L226 Difference]: Without dead ends: 7178 [2020-12-22 06:07:43,873 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 06:07:43,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2020-12-22 06:07:44,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 7178. [2020-12-22 06:07:44,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7178 states. [2020-12-22 06:07:44,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 13526 transitions. [2020-12-22 06:07:44,226 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 13526 transitions. Word has length 34 [2020-12-22 06:07:44,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:44,227 INFO L481 AbstractCegarLoop]: Abstraction has 7178 states and 13526 transitions. [2020-12-22 06:07:44,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:07:44,227 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 13526 transitions. [2020-12-22 06:07:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-22 06:07:44,229 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:44,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:44,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 06:07:44,232 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 06:07:44,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:44,235 INFO L82 PathProgramCache]: Analyzing trace with hash -634445021, now seen corresponding path program 1 times [2020-12-22 06:07:44,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:44,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085068516] [2020-12-22 06:07:44,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:44,362 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 06:07:44,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085068516] [2020-12-22 06:07:44,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:44,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:44,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134209604] [2020-12-22 06:07:44,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:44,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:44,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:44,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:44,365 INFO L87 Difference]: Start difference. First operand 7178 states and 13526 transitions. Second operand 4 states. [2020-12-22 06:07:44,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:44,941 INFO L93 Difference]: Finished difference Result 14313 states and 26981 transitions. [2020-12-22 06:07:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:44,942 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-22 06:07:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:45,015 INFO L225 Difference]: With dead ends: 14313 [2020-12-22 06:07:45,016 INFO L226 Difference]: Without dead ends: 7178 [2020-12-22 06:07:45,030 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 06:07:45,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2020-12-22 06:07:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 7178. [2020-12-22 06:07:45,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7178 states. [2020-12-22 06:07:45,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 13522 transitions. [2020-12-22 06:07:45,499 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 13522 transitions. Word has length 35 [2020-12-22 06:07:45,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:45,507 INFO L481 AbstractCegarLoop]: Abstraction has 7178 states and 13522 transitions. [2020-12-22 06:07:45,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 13522 transitions. [2020-12-22 06:07:45,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-22 06:07:45,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:45,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:45,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 06:07:45,513 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 06:07:45,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:45,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1252064664, now seen corresponding path program 1 times [2020-12-22 06:07:45,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:45,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274174657] [2020-12-22 06:07:45,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:45,613 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 06:07:45,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274174657] [2020-12-22 06:07:45,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:45,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:45,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559696599] [2020-12-22 06:07:45,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:45,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:45,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:45,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:45,617 INFO L87 Difference]: Start difference. First operand 7178 states and 13522 transitions. Second operand 4 states. [2020-12-22 06:07:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:46,006 INFO L93 Difference]: Finished difference Result 14313 states and 26977 transitions. [2020-12-22 06:07:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:46,007 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-12-22 06:07:46,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:46,130 INFO L225 Difference]: With dead ends: 14313 [2020-12-22 06:07:46,130 INFO L226 Difference]: Without dead ends: 7178 [2020-12-22 06:07:46,143 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 06:07:46,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2020-12-22 06:07:46,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 7178. [2020-12-22 06:07:46,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7178 states. [2020-12-22 06:07:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 13518 transitions. [2020-12-22 06:07:46,415 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 13518 transitions. Word has length 36 [2020-12-22 06:07:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:46,416 INFO L481 AbstractCegarLoop]: Abstraction has 7178 states and 13518 transitions. [2020-12-22 06:07:46,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 13518 transitions. [2020-12-22 06:07:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:07:46,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:46,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:46,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 06:07:46,421 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 06:07:46,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:46,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1149170824, now seen corresponding path program 1 times [2020-12-22 06:07:46,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:46,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658868105] [2020-12-22 06:07:46,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:46,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:46,502 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 06:07:46,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658868105] [2020-12-22 06:07:46,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:46,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:46,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693199406] [2020-12-22 06:07:46,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:46,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:46,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:46,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:46,505 INFO L87 Difference]: Start difference. First operand 7178 states and 13518 transitions. Second operand 4 states. [2020-12-22 06:07:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:46,933 INFO L93 Difference]: Finished difference Result 14313 states and 26973 transitions. [2020-12-22 06:07:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:46,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:07:46,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:46,956 INFO L225 Difference]: With dead ends: 14313 [2020-12-22 06:07:46,956 INFO L226 Difference]: Without dead ends: 7178 [2020-12-22 06:07:46,969 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 06:07:46,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7178 states. [2020-12-22 06:07:47,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7178 to 7178. [2020-12-22 06:07:47,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7178 states. [2020-12-22 06:07:47,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7178 states to 7178 states and 13514 transitions. [2020-12-22 06:07:47,323 INFO L78 Accepts]: Start accepts. Automaton has 7178 states and 13514 transitions. Word has length 37 [2020-12-22 06:07:47,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:47,324 INFO L481 AbstractCegarLoop]: Abstraction has 7178 states and 13514 transitions. [2020-12-22 06:07:47,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:47,324 INFO L276 IsEmpty]: Start isEmpty. Operand 7178 states and 13514 transitions. [2020-12-22 06:07:47,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-22 06:07:47,325 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:47,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:47,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 06:07:47,326 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 06:07:47,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:47,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1942433528, now seen corresponding path program 1 times [2020-12-22 06:07:47,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:47,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451899833] [2020-12-22 06:07:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:47,407 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 06:07:47,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451899833] [2020-12-22 06:07:47,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:47,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:47,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479185429] [2020-12-22 06:07:47,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:47,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:47,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:47,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:47,410 INFO L87 Difference]: Start difference. First operand 7178 states and 13514 transitions. Second operand 4 states. [2020-12-22 06:07:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:47,732 INFO L93 Difference]: Finished difference Result 14313 states and 26969 transitions. [2020-12-22 06:07:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:47,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-12-22 06:07:47,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:47,756 INFO L225 Difference]: With dead ends: 14313 [2020-12-22 06:07:47,756 INFO L226 Difference]: Without dead ends: 7157 [2020-12-22 06:07:47,771 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 06:07:47,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2020-12-22 06:07:48,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2020-12-22 06:07:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7157 states. [2020-12-22 06:07:48,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 13480 transitions. [2020-12-22 06:07:48,139 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 13480 transitions. Word has length 37 [2020-12-22 06:07:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:48,139 INFO L481 AbstractCegarLoop]: Abstraction has 7157 states and 13480 transitions. [2020-12-22 06:07:48,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:48,139 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 13480 transitions. [2020-12-22 06:07:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-22 06:07:48,140 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:48,140 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 06:07:48,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 06:07:48,141 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 06:07:48,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:48,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1649332435, now seen corresponding path program 1 times [2020-12-22 06:07:48,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:48,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729848713] [2020-12-22 06:07:48,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:48,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:48,254 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 06:07:48,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729848713] [2020-12-22 06:07:48,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:48,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:48,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518634257] [2020-12-22 06:07:48,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:48,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:48,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:48,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:48,258 INFO L87 Difference]: Start difference. First operand 7157 states and 13480 transitions. Second operand 4 states. [2020-12-22 06:07:48,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:48,715 INFO L93 Difference]: Finished difference Result 14292 states and 26935 transitions. [2020-12-22 06:07:48,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:48,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-12-22 06:07:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:48,736 INFO L225 Difference]: With dead ends: 14292 [2020-12-22 06:07:48,736 INFO L226 Difference]: Without dead ends: 7157 [2020-12-22 06:07:48,749 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 06:07:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2020-12-22 06:07:48,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2020-12-22 06:07:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7157 states. [2020-12-22 06:07:49,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 13479 transitions. [2020-12-22 06:07:49,018 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 13479 transitions. Word has length 38 [2020-12-22 06:07:49,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:49,019 INFO L481 AbstractCegarLoop]: Abstraction has 7157 states and 13479 transitions. [2020-12-22 06:07:49,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:49,019 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 13479 transitions. [2020-12-22 06:07:49,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-22 06:07:49,021 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:49,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:07:49,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 06:07:49,022 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 06:07:49,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:49,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1863987693, now seen corresponding path program 1 times [2020-12-22 06:07:49,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:49,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441844381] [2020-12-22 06:07:49,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:49,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:49,123 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 06:07:49,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441844381] [2020-12-22 06:07:49,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:49,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 06:07:49,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208623292] [2020-12-22 06:07:49,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:07:49,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:49,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:07:49,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:07:49,127 INFO L87 Difference]: Start difference. First operand 7157 states and 13479 transitions. Second operand 4 states. [2020-12-22 06:07:49,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:49,602 INFO L93 Difference]: Finished difference Result 14292 states and 26934 transitions. [2020-12-22 06:07:49,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:07:49,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-12-22 06:07:49,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:49,625 INFO L225 Difference]: With dead ends: 14292 [2020-12-22 06:07:49,625 INFO L226 Difference]: Without dead ends: 7157 [2020-12-22 06:07:49,639 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 06:07:49,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2020-12-22 06:07:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2020-12-22 06:07:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7157 states. [2020-12-22 06:07:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 13478 transitions. [2020-12-22 06:07:50,035 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 13478 transitions. Word has length 39 [2020-12-22 06:07:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:50,036 INFO L481 AbstractCegarLoop]: Abstraction has 7157 states and 13478 transitions. [2020-12-22 06:07:50,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:07:50,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 13478 transitions. [2020-12-22 06:07:50,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-22 06:07:50,038 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:50,038 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] [2020-12-22 06:07:50,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 06:07:50,038 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 06:07:50,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:50,039 INFO L82 PathProgramCache]: Analyzing trace with hash -819630094, now seen corresponding path program 1 times [2020-12-22 06:07:50,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:50,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683775317] [2020-12-22 06:07:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:50,127 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 06:07:50,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683775317] [2020-12-22 06:07:50,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:50,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:07:50,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977507760] [2020-12-22 06:07:50,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 06:07:50,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:50,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 06:07:50,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:07:50,135 INFO L87 Difference]: Start difference. First operand 7157 states and 13478 transitions. Second operand 7 states. [2020-12-22 06:07:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:50,598 INFO L93 Difference]: Finished difference Result 14286 states and 26922 transitions. [2020-12-22 06:07:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 06:07:50,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-12-22 06:07:50,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:50,621 INFO L225 Difference]: With dead ends: 14286 [2020-12-22 06:07:50,621 INFO L226 Difference]: Without dead ends: 7157 [2020-12-22 06:07:50,636 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 06:07:50,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2020-12-22 06:07:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 7157. [2020-12-22 06:07:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7157 states. [2020-12-22 06:07:51,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7157 states to 7157 states and 13477 transitions. [2020-12-22 06:07:51,011 INFO L78 Accepts]: Start accepts. Automaton has 7157 states and 13477 transitions. Word has length 40 [2020-12-22 06:07:51,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:51,011 INFO L481 AbstractCegarLoop]: Abstraction has 7157 states and 13477 transitions. [2020-12-22 06:07:51,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 06:07:51,012 INFO L276 IsEmpty]: Start isEmpty. Operand 7157 states and 13477 transitions. [2020-12-22 06:07:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-22 06:07:51,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:51,013 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] [2020-12-22 06:07:51,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 06:07:51,013 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 06:07:51,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:51,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1861414946, now seen corresponding path program 1 times [2020-12-22 06:07:51,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:51,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611401130] [2020-12-22 06:07:51,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:51,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:07:51,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611401130] [2020-12-22 06:07:51,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:51,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:07:51,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160983971] [2020-12-22 06:07:51,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:07:51,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:51,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:07:51,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:07:51,108 INFO L87 Difference]: Start difference. First operand 7157 states and 13477 transitions. Second operand 3 states. [2020-12-22 06:07:51,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:51,844 INFO L93 Difference]: Finished difference Result 15897 states and 29983 transitions. [2020-12-22 06:07:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:07:51,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-12-22 06:07:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:51,877 INFO L225 Difference]: With dead ends: 15897 [2020-12-22 06:07:51,877 INFO L226 Difference]: Without dead ends: 12278 [2020-12-22 06:07:51,884 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 06:07:51,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12278 states. [2020-12-22 06:07:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12278 to 10179. [2020-12-22 06:07:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10179 states. [2020-12-22 06:07:52,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10179 states to 10179 states and 19177 transitions. [2020-12-22 06:07:52,502 INFO L78 Accepts]: Start accepts. Automaton has 10179 states and 19177 transitions. Word has length 41 [2020-12-22 06:07:52,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:52,502 INFO L481 AbstractCegarLoop]: Abstraction has 10179 states and 19177 transitions. [2020-12-22 06:07:52,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:07:52,503 INFO L276 IsEmpty]: Start isEmpty. Operand 10179 states and 19177 transitions. [2020-12-22 06:07:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-22 06:07:52,509 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:52,509 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 06:07:52,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 06:07:52,510 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 06:07:52,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:52,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1944405844, now seen corresponding path program 1 times [2020-12-22 06:07:52,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:52,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845430604] [2020-12-22 06:07:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:52,624 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 06:07:52,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845430604] [2020-12-22 06:07:52,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:52,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 06:07:52,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528724715] [2020-12-22 06:07:52,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 06:07:52,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:52,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 06:07:52,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-22 06:07:52,627 INFO L87 Difference]: Start difference. First operand 10179 states and 19177 transitions. Second operand 8 states. [2020-12-22 06:07:54,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:07:54,404 INFO L93 Difference]: Finished difference Result 22365 states and 41911 transitions. [2020-12-22 06:07:54,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:07:54,405 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-12-22 06:07:54,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:07:54,443 INFO L225 Difference]: With dead ends: 22365 [2020-12-22 06:07:54,444 INFO L226 Difference]: Without dead ends: 13452 [2020-12-22 06:07:54,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-12-22 06:07:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13452 states. [2020-12-22 06:07:54,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13452 to 8430. [2020-12-22 06:07:54,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8430 states. [2020-12-22 06:07:54,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8430 states to 8430 states and 15809 transitions. [2020-12-22 06:07:55,000 INFO L78 Accepts]: Start accepts. Automaton has 8430 states and 15809 transitions. Word has length 60 [2020-12-22 06:07:55,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:07:55,000 INFO L481 AbstractCegarLoop]: Abstraction has 8430 states and 15809 transitions. [2020-12-22 06:07:55,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 06:07:55,000 INFO L276 IsEmpty]: Start isEmpty. Operand 8430 states and 15809 transitions. [2020-12-22 06:07:55,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-22 06:07:55,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:07:55,003 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 06:07:55,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 06:07:55,004 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 06:07:55,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:07:55,004 INFO L82 PathProgramCache]: Analyzing trace with hash 806098474, now seen corresponding path program 1 times [2020-12-22 06:07:55,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:07:55,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399844865] [2020-12-22 06:07:55,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:07:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:07:55,085 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 06:07:55,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399844865] [2020-12-22 06:07:55,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:07:55,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:07:55,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821279906] [2020-12-22 06:07:55,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:07:55,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:07:55,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:07:55,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:07:55,087 INFO L87 Difference]: Start difference. First operand 8430 states and 15809 transitions. Second operand 6 states. [2020-12-22 06:08:04,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:04,645 INFO L93 Difference]: Finished difference Result 57552 states and 107562 transitions. [2020-12-22 06:08:04,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:08:04,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-12-22 06:08:04,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:04,968 INFO L225 Difference]: With dead ends: 57552 [2020-12-22 06:08:04,969 INFO L226 Difference]: Without dead ends: 49186 [2020-12-22 06:08:04,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:08:05,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49186 states. [2020-12-22 06:08:05,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49186 to 8451. [2020-12-22 06:08:05,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8451 states. [2020-12-22 06:08:05,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8451 states to 8451 states and 15830 transitions. [2020-12-22 06:08:05,965 INFO L78 Accepts]: Start accepts. Automaton has 8451 states and 15830 transitions. Word has length 61 [2020-12-22 06:08:05,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:05,965 INFO L481 AbstractCegarLoop]: Abstraction has 8451 states and 15830 transitions. [2020-12-22 06:08:05,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:08:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 8451 states and 15830 transitions. [2020-12-22 06:08:05,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 06:08:05,969 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:05,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:08:05,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 06:08:05,969 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 06:08:05,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:05,970 INFO L82 PathProgramCache]: Analyzing trace with hash -749209650, now seen corresponding path program 1 times [2020-12-22 06:08:05,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:05,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249362689] [2020-12-22 06:08:05,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:06,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:06,088 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 06:08:06,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249362689] [2020-12-22 06:08:06,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:06,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:06,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643536667] [2020-12-22 06:08:06,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:06,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:06,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:06,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:06,090 INFO L87 Difference]: Start difference. First operand 8451 states and 15830 transitions. Second operand 4 states. [2020-12-22 06:08:10,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:10,238 INFO L93 Difference]: Finished difference Result 22148 states and 41661 transitions. [2020-12-22 06:08:10,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:08:10,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-12-22 06:08:10,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:10,263 INFO L225 Difference]: With dead ends: 22148 [2020-12-22 06:08:10,263 INFO L226 Difference]: Without dead ends: 13763 [2020-12-22 06:08:10,275 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 06:08:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13763 states. [2020-12-22 06:08:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13763 to 8451. [2020-12-22 06:08:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8451 states. [2020-12-22 06:08:10,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8451 states to 8451 states and 15813 transitions. [2020-12-22 06:08:10,839 INFO L78 Accepts]: Start accepts. Automaton has 8451 states and 15813 transitions. Word has length 62 [2020-12-22 06:08:10,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:10,841 INFO L481 AbstractCegarLoop]: Abstraction has 8451 states and 15813 transitions. [2020-12-22 06:08:10,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:10,841 INFO L276 IsEmpty]: Start isEmpty. Operand 8451 states and 15813 transitions. [2020-12-22 06:08:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 06:08:10,844 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:10,844 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 06:08:10,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 06:08:10,845 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 06:08:10,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:10,845 INFO L82 PathProgramCache]: Analyzing trace with hash -216167122, now seen corresponding path program 1 times [2020-12-22 06:08:10,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:10,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773124279] [2020-12-22 06:08:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:10,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 06:08:10,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773124279] [2020-12-22 06:08:10,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:10,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:08:10,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631820647] [2020-12-22 06:08:10,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:08:10,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:10,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:08:10,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:08:10,961 INFO L87 Difference]: Start difference. First operand 8451 states and 15813 transitions. Second operand 4 states. [2020-12-22 06:08:15,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:15,070 INFO L93 Difference]: Finished difference Result 22174 states and 41674 transitions. [2020-12-22 06:08:15,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:08:15,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-12-22 06:08:15,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:15,095 INFO L225 Difference]: With dead ends: 22174 [2020-12-22 06:08:15,095 INFO L226 Difference]: Without dead ends: 13763 [2020-12-22 06:08:15,109 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 06:08:15,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13763 states. [2020-12-22 06:08:15,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13763 to 8451. [2020-12-22 06:08:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8451 states. [2020-12-22 06:08:15,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8451 states to 8451 states and 15796 transitions. [2020-12-22 06:08:15,613 INFO L78 Accepts]: Start accepts. Automaton has 8451 states and 15796 transitions. Word has length 63 [2020-12-22 06:08:15,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:15,613 INFO L481 AbstractCegarLoop]: Abstraction has 8451 states and 15796 transitions. [2020-12-22 06:08:15,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:08:15,613 INFO L276 IsEmpty]: Start isEmpty. Operand 8451 states and 15796 transitions. [2020-12-22 06:08:15,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 06:08:15,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:15,617 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 06:08:15,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 06:08:15,617 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 06:08:15,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:15,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1716704928, now seen corresponding path program 1 times [2020-12-22 06:08:15,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:15,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776851969] [2020-12-22 06:08:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:15,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:15,699 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 06:08:15,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776851969] [2020-12-22 06:08:15,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:15,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:15,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839098210] [2020-12-22 06:08:15,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:08:15,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:15,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:08:15,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:08:15,702 INFO L87 Difference]: Start difference. First operand 8451 states and 15796 transitions. Second operand 6 states. [2020-12-22 06:08:32,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:32,498 INFO L93 Difference]: Finished difference Result 106749 states and 199267 transitions. [2020-12-22 06:08:32,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:08:32,499 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 06:08:32,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:32,660 INFO L225 Difference]: With dead ends: 106749 [2020-12-22 06:08:32,660 INFO L226 Difference]: Without dead ends: 98365 [2020-12-22 06:08:32,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:08:32,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98365 states. [2020-12-22 06:08:34,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98365 to 16859. [2020-12-22 06:08:34,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16859 states. [2020-12-22 06:08:34,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16859 states to 16859 states and 31545 transitions. [2020-12-22 06:08:34,484 INFO L78 Accepts]: Start accepts. Automaton has 16859 states and 31545 transitions. Word has length 65 [2020-12-22 06:08:34,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:34,485 INFO L481 AbstractCegarLoop]: Abstraction has 16859 states and 31545 transitions. [2020-12-22 06:08:34,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:08:34,485 INFO L276 IsEmpty]: Start isEmpty. Operand 16859 states and 31545 transitions. [2020-12-22 06:08:34,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:08:34,491 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:34,491 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 06:08:34,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 06:08:34,491 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 06:08:34,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:34,492 INFO L82 PathProgramCache]: Analyzing trace with hash 1057107044, now seen corresponding path program 1 times [2020-12-22 06:08:34,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:34,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138472428] [2020-12-22 06:08:34,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:34,574 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 06:08:34,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138472428] [2020-12-22 06:08:34,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:34,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:34,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468051881] [2020-12-22 06:08:34,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:08:34,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:34,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:08:34,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:08:34,579 INFO L87 Difference]: Start difference. First operand 16859 states and 31545 transitions. Second operand 6 states. [2020-12-22 06:08:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:08:56,985 INFO L93 Difference]: Finished difference Result 164219 states and 306665 transitions. [2020-12-22 06:08:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 06:08:56,986 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 06:08:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:08:57,376 INFO L225 Difference]: With dead ends: 164219 [2020-12-22 06:08:57,377 INFO L226 Difference]: Without dead ends: 147466 [2020-12-22 06:08:57,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-12-22 06:08:57,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147466 states. [2020-12-22 06:08:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147466 to 25267. [2020-12-22 06:08:59,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25267 states. [2020-12-22 06:08:59,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25267 states to 25267 states and 47294 transitions. [2020-12-22 06:08:59,751 INFO L78 Accepts]: Start accepts. Automaton has 25267 states and 47294 transitions. Word has length 66 [2020-12-22 06:08:59,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:08:59,751 INFO L481 AbstractCegarLoop]: Abstraction has 25267 states and 47294 transitions. [2020-12-22 06:08:59,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:08:59,751 INFO L276 IsEmpty]: Start isEmpty. Operand 25267 states and 47294 transitions. [2020-12-22 06:08:59,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 06:08:59,758 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:08:59,758 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 06:08:59,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 06:08:59,759 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 06:08:59,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:08:59,759 INFO L82 PathProgramCache]: Analyzing trace with hash 737154613, now seen corresponding path program 1 times [2020-12-22 06:08:59,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:08:59,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021573337] [2020-12-22 06:08:59,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:08:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:08:59,826 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 06:08:59,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021573337] [2020-12-22 06:08:59,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:08:59,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:08:59,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084016873] [2020-12-22 06:08:59,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 06:08:59,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:08:59,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 06:08:59,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 06:08:59,829 INFO L87 Difference]: Start difference. First operand 25267 states and 47294 transitions. Second operand 5 states. [2020-12-22 06:09:00,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:00,508 INFO L93 Difference]: Finished difference Result 33690 states and 63057 transitions. [2020-12-22 06:09:00,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 06:09:00,509 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-22 06:09:00,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:00,518 INFO L225 Difference]: With dead ends: 33690 [2020-12-22 06:09:00,519 INFO L226 Difference]: Without dead ends: 8448 [2020-12-22 06:09:00,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 06:09:00,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8448 states. [2020-12-22 06:09:01,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8448 to 8448. [2020-12-22 06:09:01,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8448 states. [2020-12-22 06:09:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8448 states to 8448 states and 15789 transitions. [2020-12-22 06:09:01,079 INFO L78 Accepts]: Start accepts. Automaton has 8448 states and 15789 transitions. Word has length 66 [2020-12-22 06:09:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:01,079 INFO L481 AbstractCegarLoop]: Abstraction has 8448 states and 15789 transitions. [2020-12-22 06:09:01,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 06:09:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 8448 states and 15789 transitions. [2020-12-22 06:09:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 06:09:01,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:01,082 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] [2020-12-22 06:09:01,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 06:09:01,083 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 06:09:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:01,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1978424955, now seen corresponding path program 1 times [2020-12-22 06:09:01,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:01,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135303238] [2020-12-22 06:09:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:01,166 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 06:09:01,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135303238] [2020-12-22 06:09:01,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:01,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:01,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153553815] [2020-12-22 06:09:01,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:09:01,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:01,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:09:01,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:09:01,173 INFO L87 Difference]: Start difference. First operand 8448 states and 15789 transitions. Second operand 6 states. [2020-12-22 06:09:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:08,684 INFO L93 Difference]: Finished difference Result 36899 states and 68938 transitions. [2020-12-22 06:09:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 06:09:08,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-12-22 06:09:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:08,720 INFO L225 Difference]: With dead ends: 36899 [2020-12-22 06:09:08,720 INFO L226 Difference]: Without dead ends: 28515 [2020-12-22 06:09:08,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-22 06:09:08,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28515 states. [2020-12-22 06:09:09,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28515 to 8245. [2020-12-22 06:09:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8245 states. [2020-12-22 06:09:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8245 states to 8245 states and 15446 transitions. [2020-12-22 06:09:09,422 INFO L78 Accepts]: Start accepts. Automaton has 8245 states and 15446 transitions. Word has length 67 [2020-12-22 06:09:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:09,422 INFO L481 AbstractCegarLoop]: Abstraction has 8245 states and 15446 transitions. [2020-12-22 06:09:09,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:09:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand 8245 states and 15446 transitions. [2020-12-22 06:09:09,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 06:09:09,426 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:09,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:09,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 06:09:09,426 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 06:09:09,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:09,427 INFO L82 PathProgramCache]: Analyzing trace with hash 309642937, now seen corresponding path program 1 times [2020-12-22 06:09:09,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:09,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672101954] [2020-12-22 06:09:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:09,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:09,511 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 06:09:09,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672101954] [2020-12-22 06:09:09,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:09,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:09,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9269193] [2020-12-22 06:09:09,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:09:09,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:09,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:09:09,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:09:09,513 INFO L87 Difference]: Start difference. First operand 8245 states and 15446 transitions. Second operand 4 states. [2020-12-22 06:09:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:13,925 INFO L93 Difference]: Finished difference Result 21761 states and 40944 transitions. [2020-12-22 06:09:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:09:13,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-12-22 06:09:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:13,943 INFO L225 Difference]: With dead ends: 21761 [2020-12-22 06:09:13,944 INFO L226 Difference]: Without dead ends: 13550 [2020-12-22 06:09:13,952 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 06:09:13,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13550 states. [2020-12-22 06:09:14,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13550 to 8245. [2020-12-22 06:09:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8245 states. [2020-12-22 06:09:14,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8245 states to 8245 states and 15429 transitions. [2020-12-22 06:09:14,543 INFO L78 Accepts]: Start accepts. Automaton has 8245 states and 15429 transitions. Word has length 68 [2020-12-22 06:09:14,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:14,543 INFO L481 AbstractCegarLoop]: Abstraction has 8245 states and 15429 transitions. [2020-12-22 06:09:14,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:09:14,544 INFO L276 IsEmpty]: Start isEmpty. Operand 8245 states and 15429 transitions. [2020-12-22 06:09:14,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 06:09:14,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:14,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:09:14,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 06:09:14,547 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 06:09:14,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:14,547 INFO L82 PathProgramCache]: Analyzing trace with hash -165165347, now seen corresponding path program 1 times [2020-12-22 06:09:14,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:14,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181023300] [2020-12-22 06:09:14,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:14,637 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 06:09:14,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181023300] [2020-12-22 06:09:14,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:14,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 06:09:14,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256627249] [2020-12-22 06:09:14,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 06:09:14,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:14,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 06:09:14,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 06:09:14,639 INFO L87 Difference]: Start difference. First operand 8245 states and 15429 transitions. Second operand 4 states. [2020-12-22 06:09:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:19,152 INFO L93 Difference]: Finished difference Result 21761 states and 40911 transitions. [2020-12-22 06:09:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 06:09:19,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-12-22 06:09:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:19,166 INFO L225 Difference]: With dead ends: 21761 [2020-12-22 06:09:19,166 INFO L226 Difference]: Without dead ends: 13550 [2020-12-22 06:09:19,172 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 06:09:19,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13550 states. [2020-12-22 06:09:19,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13550 to 8245. [2020-12-22 06:09:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8245 states. [2020-12-22 06:09:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8245 states to 8245 states and 15412 transitions. [2020-12-22 06:09:19,665 INFO L78 Accepts]: Start accepts. Automaton has 8245 states and 15412 transitions. Word has length 70 [2020-12-22 06:09:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:19,666 INFO L481 AbstractCegarLoop]: Abstraction has 8245 states and 15412 transitions. [2020-12-22 06:09:19,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 06:09:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 8245 states and 15412 transitions. [2020-12-22 06:09:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-22 06:09:19,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:19,668 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] [2020-12-22 06:09:19,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 06:09:19,669 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 06:09:19,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:19,669 INFO L82 PathProgramCache]: Analyzing trace with hash 285348761, now seen corresponding path program 1 times [2020-12-22 06:09:19,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:19,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218298098] [2020-12-22 06:09:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:19,748 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 06:09:19,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218298098] [2020-12-22 06:09:19,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:19,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:09:19,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441998850] [2020-12-22 06:09:19,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:09:19,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:19,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:09:19,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:09:19,750 INFO L87 Difference]: Start difference. First operand 8245 states and 15412 transitions. Second operand 6 states. [2020-12-22 06:09:24,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:24,181 INFO L93 Difference]: Finished difference Result 23609 states and 44022 transitions. [2020-12-22 06:09:24,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 06:09:24,182 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-12-22 06:09:24,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:24,200 INFO L225 Difference]: With dead ends: 23609 [2020-12-22 06:09:24,200 INFO L226 Difference]: Without dead ends: 17040 [2020-12-22 06:09:24,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-12-22 06:09:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17040 states. [2020-12-22 06:09:24,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17040 to 8235. [2020-12-22 06:09:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8235 states. [2020-12-22 06:09:24,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8235 states to 8235 states and 15392 transitions. [2020-12-22 06:09:24,855 INFO L78 Accepts]: Start accepts. Automaton has 8235 states and 15392 transitions. Word has length 72 [2020-12-22 06:09:24,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:24,855 INFO L481 AbstractCegarLoop]: Abstraction has 8235 states and 15392 transitions. [2020-12-22 06:09:24,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 06:09:24,856 INFO L276 IsEmpty]: Start isEmpty. Operand 8235 states and 15392 transitions. [2020-12-22 06:09:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-12-22 06:09:24,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:24,858 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] [2020-12-22 06:09:24,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 06:09:24,859 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 06:09:24,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:24,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1077334731, now seen corresponding path program 1 times [2020-12-22 06:09:24,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:24,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748973171] [2020-12-22 06:09:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:24,934 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 06:09:24,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748973171] [2020-12-22 06:09:24,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:24,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:09:24,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562207930] [2020-12-22 06:09:24,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:24,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:24,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:24,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:24,939 INFO L87 Difference]: Start difference. First operand 8235 states and 15392 transitions. Second operand 3 states. [2020-12-22 06:09:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:25,879 INFO L93 Difference]: Finished difference Result 19358 states and 36220 transitions. [2020-12-22 06:09:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:25,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-12-22 06:09:25,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:25,900 INFO L225 Difference]: With dead ends: 19358 [2020-12-22 06:09:25,900 INFO L226 Difference]: Without dead ends: 12420 [2020-12-22 06:09:25,908 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 06:09:25,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12420 states. [2020-12-22 06:09:26,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12420 to 12405. [2020-12-22 06:09:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12405 states. [2020-12-22 06:09:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12405 states to 12405 states and 23156 transitions. [2020-12-22 06:09:26,694 INFO L78 Accepts]: Start accepts. Automaton has 12405 states and 23156 transitions. Word has length 78 [2020-12-22 06:09:26,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:26,694 INFO L481 AbstractCegarLoop]: Abstraction has 12405 states and 23156 transitions. [2020-12-22 06:09:26,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 12405 states and 23156 transitions. [2020-12-22 06:09:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-12-22 06:09:26,697 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:26,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:26,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 06:09:26,698 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 06:09:26,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:26,698 INFO L82 PathProgramCache]: Analyzing trace with hash 434411579, now seen corresponding path program 1 times [2020-12-22 06:09:26,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:26,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806206162] [2020-12-22 06:09:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:26,766 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 06:09:26,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806206162] [2020-12-22 06:09:26,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:26,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:09:26,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802558701] [2020-12-22 06:09:26,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:26,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:26,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:26,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:26,768 INFO L87 Difference]: Start difference. First operand 12405 states and 23156 transitions. Second operand 3 states. [2020-12-22 06:09:28,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:28,182 INFO L93 Difference]: Finished difference Result 31160 states and 58206 transitions. [2020-12-22 06:09:28,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:28,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-12-22 06:09:28,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:28,209 INFO L225 Difference]: With dead ends: 31160 [2020-12-22 06:09:28,209 INFO L226 Difference]: Without dead ends: 20667 [2020-12-22 06:09:28,222 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 06:09:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20667 states. [2020-12-22 06:09:29,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20667 to 20652. [2020-12-22 06:09:29,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20652 states. [2020-12-22 06:09:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20652 states to 20652 states and 38525 transitions. [2020-12-22 06:09:29,498 INFO L78 Accepts]: Start accepts. Automaton has 20652 states and 38525 transitions. Word has length 79 [2020-12-22 06:09:29,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:29,498 INFO L481 AbstractCegarLoop]: Abstraction has 20652 states and 38525 transitions. [2020-12-22 06:09:29,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:29,499 INFO L276 IsEmpty]: Start isEmpty. Operand 20652 states and 38525 transitions. [2020-12-22 06:09:29,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-22 06:09:29,501 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:29,501 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:29,502 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-22 06:09:29,502 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 06:09:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:29,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1643596582, now seen corresponding path program 1 times [2020-12-22 06:09:29,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:29,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106203763] [2020-12-22 06:09:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:29,570 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 06:09:29,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106203763] [2020-12-22 06:09:29,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:29,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:09:29,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643543317] [2020-12-22 06:09:29,571 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:29,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:29,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:29,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:29,572 INFO L87 Difference]: Start difference. First operand 20652 states and 38525 transitions. Second operand 3 states. [2020-12-22 06:09:32,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:32,262 INFO L93 Difference]: Finished difference Result 54578 states and 101835 transitions. [2020-12-22 06:09:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:32,262 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-12-22 06:09:32,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:32,310 INFO L225 Difference]: With dead ends: 54578 [2020-12-22 06:09:32,310 INFO L226 Difference]: Without dead ends: 36955 [2020-12-22 06:09:32,323 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 06:09:32,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36955 states. [2020-12-22 06:09:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36955 to 36940. [2020-12-22 06:09:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36940 states. [2020-12-22 06:09:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36940 states to 36940 states and 68863 transitions. [2020-12-22 06:09:34,723 INFO L78 Accepts]: Start accepts. Automaton has 36940 states and 68863 transitions. Word has length 80 [2020-12-22 06:09:34,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:34,723 INFO L481 AbstractCegarLoop]: Abstraction has 36940 states and 68863 transitions. [2020-12-22 06:09:34,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 36940 states and 68863 transitions. [2020-12-22 06:09:34,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-22 06:09:34,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:34,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:34,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-22 06:09:34,727 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 06:09:34,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:34,727 INFO L82 PathProgramCache]: Analyzing trace with hash 138592246, now seen corresponding path program 1 times [2020-12-22 06:09:34,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:34,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211863621] [2020-12-22 06:09:34,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:34,794 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 06:09:34,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211863621] [2020-12-22 06:09:34,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:34,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:09:34,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798342642] [2020-12-22 06:09:34,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:34,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:34,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:34,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:34,796 INFO L87 Difference]: Start difference. First operand 36940 states and 68863 transitions. Second operand 3 states. [2020-12-22 06:09:39,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:39,126 INFO L93 Difference]: Finished difference Result 101002 states and 188244 transitions. [2020-12-22 06:09:39,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:39,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-12-22 06:09:39,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:39,230 INFO L225 Difference]: With dead ends: 101002 [2020-12-22 06:09:39,230 INFO L226 Difference]: Without dead ends: 69099 [2020-12-22 06:09:39,262 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 06:09:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69099 states. [2020-12-22 06:09:43,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69099 to 69084. [2020-12-22 06:09:43,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69084 states. [2020-12-22 06:09:43,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69084 states to 69084 states and 128657 transitions. [2020-12-22 06:09:43,830 INFO L78 Accepts]: Start accepts. Automaton has 69084 states and 128657 transitions. Word has length 81 [2020-12-22 06:09:43,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:09:43,830 INFO L481 AbstractCegarLoop]: Abstraction has 69084 states and 128657 transitions. [2020-12-22 06:09:43,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:09:43,830 INFO L276 IsEmpty]: Start isEmpty. Operand 69084 states and 128657 transitions. [2020-12-22 06:09:43,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:09:43,834 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:09:43,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:09:43,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-22 06:09:43,834 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 06:09:43,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:09:43,834 INFO L82 PathProgramCache]: Analyzing trace with hash 393064321, now seen corresponding path program 1 times [2020-12-22 06:09:43,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:09:43,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049729152] [2020-12-22 06:09:43,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:09:43,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:09:43,899 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 06:09:43,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049729152] [2020-12-22 06:09:43,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:09:43,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 06:09:43,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169404478] [2020-12-22 06:09:43,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 06:09:43,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:09:43,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 06:09:43,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 06:09:43,902 INFO L87 Difference]: Start difference. First operand 69084 states and 128657 transitions. Second operand 3 states. [2020-12-22 06:09:52,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:09:52,314 INFO L93 Difference]: Finished difference Result 192986 states and 359201 transitions. [2020-12-22 06:09:52,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 06:09:52,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-22 06:09:52,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:09:52,706 INFO L225 Difference]: With dead ends: 192986 [2020-12-22 06:09:52,706 INFO L226 Difference]: Without dead ends: 132503 [2020-12-22 06:09:52,761 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 06:09:52,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132503 states. [2020-12-22 06:10:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132503 to 132488. [2020-12-22 06:10:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132488 states. [2020-12-22 06:10:01,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132488 states to 132488 states and 246399 transitions. [2020-12-22 06:10:01,613 INFO L78 Accepts]: Start accepts. Automaton has 132488 states and 246399 transitions. Word has length 82 [2020-12-22 06:10:01,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 06:10:01,614 INFO L481 AbstractCegarLoop]: Abstraction has 132488 states and 246399 transitions. [2020-12-22 06:10:01,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 06:10:01,614 INFO L276 IsEmpty]: Start isEmpty. Operand 132488 states and 246399 transitions. [2020-12-22 06:10:01,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-22 06:10:01,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 06:10:01,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 06:10:01,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-22 06:10:01,617 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 06:10:01,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 06:10:01,618 INFO L82 PathProgramCache]: Analyzing trace with hash 259050815, now seen corresponding path program 1 times [2020-12-22 06:10:01,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 06:10:01,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31168443] [2020-12-22 06:10:01,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 06:10:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 06:10:01,713 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 06:10:01,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31168443] [2020-12-22 06:10:01,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 06:10:01,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 06:10:01,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226228835] [2020-12-22 06:10:01,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 06:10:01,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 06:10:01,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 06:10:01,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 06:10:01,715 INFO L87 Difference]: Start difference. First operand 132488 states and 246399 transitions. Second operand 6 states. [2020-12-22 06:10:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 06:10:28,440 INFO L93 Difference]: Finished difference Result 616661 states and 1145220 transitions. [2020-12-22 06:10:28,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 06:10:28,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-12-22 06:10:28,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 06:10:29,901 INFO L225 Difference]: With dead ends: 616661 [2020-12-22 06:10:29,901 INFO L226 Difference]: Without dead ends: 499190 [2020-12-22 06:10:30,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-22 06:10:30,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499190 states.