/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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:27:11,331 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:27:11,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:27:11,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:27:11,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:27:11,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:27:11,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:27:11,384 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:27:11,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:27:11,388 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:27:11,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:27:11,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:27:11,391 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:27:11,392 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:27:11,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:27:11,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:27:11,419 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:27:11,420 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:27:11,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:27:11,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:27:11,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:27:11,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:27:11,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:27:11,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:27:11,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:27:11,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:27:11,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:27:11,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:27:11,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:27:11,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:27:11,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:27:11,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:27:11,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:27:11,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:27:11,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:27:11,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:27:11,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:27:11,508 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:27:11,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:27:11,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:27:11,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:27:11,511 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:27:11,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:27:11,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:27:11,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:27:11,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:27:11,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:27:11,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:27:11,514 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:27:11,514 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:27:11,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:27:11,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:27:11,515 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:27:11,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:27:11,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:27:11,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:27:11,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:27:11,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:27:11,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:27:11,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:27:11,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:27:11,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:27:11,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:27:11,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:27:11,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:27:11,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:27:11,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:27:11,942 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:27:11,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:27:12,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81991c391/93aac737f17945f392b77f91c5bd7a1a/FLAGa64bd8845 [2020-12-22 08:27:12,756 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:27:12,757 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:27:12,783 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81991c391/93aac737f17945f392b77f91c5bd7a1a/FLAGa64bd8845 [2020-12-22 08:27:13,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81991c391/93aac737f17945f392b77f91c5bd7a1a [2020-12-22 08:27:13,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:27:13,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:27:13,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:27:13,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:27:13,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:27:13,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e7efe0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13, skipping insertion in model container [2020-12-22 08:27:13,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:27:13,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:27:13,459 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6701,6714] [2020-12-22 08:27:13,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:27:13,534 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:27:13,644 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/seq-mthreaded-reduced/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6701,6714] [2020-12-22 08:27:13,678 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:27:13,701 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:27:13,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13 WrapperNode [2020-12-22 08:27:13,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:27:13,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:27:13,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:27:13,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:27:13,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:27:13,813 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:27:13,813 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:27:13,813 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:27:13,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (1/1) ... [2020-12-22 08:27:13,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:27:13,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:27:13,915 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:27:13,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:27:13,916 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (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 08:27:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:27:14,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:27:14,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:27:14,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:27:14,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:27:14,957 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:27:14,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:27:14 BoogieIcfgContainer [2020-12-22 08:27:14,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:27:14,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:27:14,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:27:14,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:27:14,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:27:13" (1/3) ... [2020-12-22 08:27:14,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ec2d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:27:14, skipping insertion in model container [2020-12-22 08:27:14,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:27:13" (2/3) ... [2020-12-22 08:27:14,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ec2d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:27:14, skipping insertion in model container [2020-12-22 08:27:14,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:27:14" (3/3) ... [2020-12-22 08:27:14,969 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:27:14,976 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:27:14,982 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:27:15,003 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:27:15,033 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:27:15,034 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:27:15,034 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:27:15,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:27:15,034 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:27:15,034 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:27:15,035 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:27:15,035 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:27:15,055 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-12-22 08:27:15,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-22 08:27:15,065 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:15,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:27:15,067 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:15,073 INFO L82 PathProgramCache]: Analyzing trace with hash -113151096, now seen corresponding path program 1 times [2020-12-22 08:27:15,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:15,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554922294] [2020-12-22 08:27:15,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:15,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554922294] [2020-12-22 08:27:15,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:15,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:27:15,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525642023] [2020-12-22 08:27:15,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:27:15,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:15,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:27:15,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:27:15,524 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2020-12-22 08:27:15,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:15,682 INFO L93 Difference]: Finished difference Result 364 states and 598 transitions. [2020-12-22 08:27:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:27:15,684 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-22 08:27:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:15,721 INFO L225 Difference]: With dead ends: 364 [2020-12-22 08:27:15,721 INFO L226 Difference]: Without dead ends: 274 [2020-12-22 08:27:15,727 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 08:27:15,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-12-22 08:27:15,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2020-12-22 08:27:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-12-22 08:27:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 410 transitions. [2020-12-22 08:27:15,842 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 410 transitions. Word has length 64 [2020-12-22 08:27:15,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:15,843 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 410 transitions. [2020-12-22 08:27:15,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:27:15,843 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 410 transitions. [2020-12-22 08:27:15,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 08:27:15,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:15,846 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 08:27:15,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:27:15,846 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:15,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:15,848 INFO L82 PathProgramCache]: Analyzing trace with hash 507394196, now seen corresponding path program 1 times [2020-12-22 08:27:15,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:15,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183515263] [2020-12-22 08:27:15,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:16,104 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 08:27:16,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183515263] [2020-12-22 08:27:16,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:16,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:27:16,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118122876] [2020-12-22 08:27:16,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:16,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:16,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:16,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:16,109 INFO L87 Difference]: Start difference. First operand 272 states and 410 transitions. Second operand 6 states. [2020-12-22 08:27:16,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:16,465 INFO L93 Difference]: Finished difference Result 1002 states and 1550 transitions. [2020-12-22 08:27:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:27:16,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 08:27:16,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:16,472 INFO L225 Difference]: With dead ends: 1002 [2020-12-22 08:27:16,472 INFO L226 Difference]: Without dead ends: 792 [2020-12-22 08:27:16,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 792 states. [2020-12-22 08:27:16,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 792 to 786. [2020-12-22 08:27:16,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2020-12-22 08:27:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1206 transitions. [2020-12-22 08:27:16,535 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1206 transitions. Word has length 65 [2020-12-22 08:27:16,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:16,535 INFO L481 AbstractCegarLoop]: Abstraction has 786 states and 1206 transitions. [2020-12-22 08:27:16,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:16,536 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1206 transitions. [2020-12-22 08:27:16,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:27:16,540 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:16,541 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 08:27:16,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:27:16,541 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:16,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:16,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1175932082, now seen corresponding path program 1 times [2020-12-22 08:27:16,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:16,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936941662] [2020-12-22 08:27:16,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:16,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:16,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:16,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936941662] [2020-12-22 08:27:16,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:16,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:16,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023167311] [2020-12-22 08:27:16,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:16,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:16,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:16,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:16,711 INFO L87 Difference]: Start difference. First operand 786 states and 1206 transitions. Second operand 6 states. [2020-12-22 08:27:17,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:17,143 INFO L93 Difference]: Finished difference Result 2640 states and 4113 transitions. [2020-12-22 08:27:17,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:17,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:27:17,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:17,155 INFO L225 Difference]: With dead ends: 2640 [2020-12-22 08:27:17,155 INFO L226 Difference]: Without dead ends: 1904 [2020-12-22 08:27:17,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:27:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-12-22 08:27:17,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1900. [2020-12-22 08:27:17,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1900 states. [2020-12-22 08:27:17,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1900 states to 1900 states and 2951 transitions. [2020-12-22 08:27:17,287 INFO L78 Accepts]: Start accepts. Automaton has 1900 states and 2951 transitions. Word has length 66 [2020-12-22 08:27:17,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:17,288 INFO L481 AbstractCegarLoop]: Abstraction has 1900 states and 2951 transitions. [2020-12-22 08:27:17,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:17,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1900 states and 2951 transitions. [2020-12-22 08:27:17,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:27:17,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:17,295 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 08:27:17,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:27:17,296 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash 195420080, now seen corresponding path program 1 times [2020-12-22 08:27:17,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:17,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776076648] [2020-12-22 08:27:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:17,436 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 08:27:17,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776076648] [2020-12-22 08:27:17,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:17,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:17,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898004174] [2020-12-22 08:27:17,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:17,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:17,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:17,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:17,442 INFO L87 Difference]: Start difference. First operand 1900 states and 2951 transitions. Second operand 6 states. [2020-12-22 08:27:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:18,020 INFO L93 Difference]: Finished difference Result 6610 states and 10356 transitions. [2020-12-22 08:27:18,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:18,020 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:27:18,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:18,047 INFO L225 Difference]: With dead ends: 6610 [2020-12-22 08:27:18,048 INFO L226 Difference]: Without dead ends: 4810 [2020-12-22 08:27:18,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:27:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4810 states. [2020-12-22 08:27:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4810 to 4370. [2020-12-22 08:27:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4370 states. [2020-12-22 08:27:18,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4370 states to 4370 states and 6814 transitions. [2020-12-22 08:27:18,413 INFO L78 Accepts]: Start accepts. Automaton has 4370 states and 6814 transitions. Word has length 66 [2020-12-22 08:27:18,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:18,413 INFO L481 AbstractCegarLoop]: Abstraction has 4370 states and 6814 transitions. [2020-12-22 08:27:18,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:18,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4370 states and 6814 transitions. [2020-12-22 08:27:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:27:18,416 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:18,416 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 08:27:18,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:27:18,416 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:18,418 INFO L82 PathProgramCache]: Analyzing trace with hash 2140991135, now seen corresponding path program 1 times [2020-12-22 08:27:18,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:18,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862680666] [2020-12-22 08:27:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:18,592 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 08:27:18,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862680666] [2020-12-22 08:27:18,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:18,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:18,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184506221] [2020-12-22 08:27:18,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:27:18,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:18,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:27:18,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:18,597 INFO L87 Difference]: Start difference. First operand 4370 states and 6814 transitions. Second operand 6 states. [2020-12-22 08:27:19,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:19,595 INFO L93 Difference]: Finished difference Result 16439 states and 25701 transitions. [2020-12-22 08:27:19,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:19,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-12-22 08:27:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:19,664 INFO L225 Difference]: With dead ends: 16439 [2020-12-22 08:27:19,664 INFO L226 Difference]: Without dead ends: 12142 [2020-12-22 08:27:19,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 08:27:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12142 states. [2020-12-22 08:27:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12142 to 12138. [2020-12-22 08:27:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12138 states. [2020-12-22 08:27:20,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12138 states to 12138 states and 18894 transitions. [2020-12-22 08:27:20,601 INFO L78 Accepts]: Start accepts. Automaton has 12138 states and 18894 transitions. Word has length 66 [2020-12-22 08:27:20,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:20,602 INFO L481 AbstractCegarLoop]: Abstraction has 12138 states and 18894 transitions. [2020-12-22 08:27:20,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:27:20,602 INFO L276 IsEmpty]: Start isEmpty. Operand 12138 states and 18894 transitions. [2020-12-22 08:27:20,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 08:27:20,606 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:20,606 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 08:27:20,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:27:20,607 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:20,608 INFO L82 PathProgramCache]: Analyzing trace with hash -472666691, now seen corresponding path program 1 times [2020-12-22 08:27:20,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:20,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113559853] [2020-12-22 08:27:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:20,717 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 08:27:20,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113559853] [2020-12-22 08:27:20,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:20,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:27:20,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765924667] [2020-12-22 08:27:20,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:27:20,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:20,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:27:20,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:27:20,723 INFO L87 Difference]: Start difference. First operand 12138 states and 18894 transitions. Second operand 5 states. [2020-12-22 08:27:22,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:22,334 INFO L93 Difference]: Finished difference Result 33384 states and 52013 transitions. [2020-12-22 08:27:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:27:22,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-22 08:27:22,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:22,436 INFO L225 Difference]: With dead ends: 33384 [2020-12-22 08:27:22,436 INFO L226 Difference]: Without dead ends: 21280 [2020-12-22 08:27:22,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 08:27:22,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21280 states. [2020-12-22 08:27:24,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21280 to 21278. [2020-12-22 08:27:24,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21278 states. [2020-12-22 08:27:24,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21278 states to 21278 states and 32812 transitions. [2020-12-22 08:27:24,067 INFO L78 Accepts]: Start accepts. Automaton has 21278 states and 32812 transitions. Word has length 66 [2020-12-22 08:27:24,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:24,067 INFO L481 AbstractCegarLoop]: Abstraction has 21278 states and 32812 transitions. [2020-12-22 08:27:24,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:27:24,067 INFO L276 IsEmpty]: Start isEmpty. Operand 21278 states and 32812 transitions. [2020-12-22 08:27:24,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-22 08:27:24,071 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:24,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:27:24,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:27:24,072 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:24,072 INFO L82 PathProgramCache]: Analyzing trace with hash 545251456, now seen corresponding path program 1 times [2020-12-22 08:27:24,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:24,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670839213] [2020-12-22 08:27:24,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:24,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:24,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670839213] [2020-12-22 08:27:24,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:24,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:27:24,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218193850] [2020-12-22 08:27:24,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:27:24,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:24,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:27:24,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:27:24,214 INFO L87 Difference]: Start difference. First operand 21278 states and 32812 transitions. Second operand 5 states. [2020-12-22 08:27:26,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:26,129 INFO L93 Difference]: Finished difference Result 38890 states and 59627 transitions. [2020-12-22 08:27:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:27:26,130 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 67 [2020-12-22 08:27:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:26,240 INFO L225 Difference]: With dead ends: 38890 [2020-12-22 08:27:26,240 INFO L226 Difference]: Without dead ends: 38888 [2020-12-22 08:27:26,252 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:27:26,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38888 states. [2020-12-22 08:27:27,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38888 to 21620. [2020-12-22 08:27:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21620 states. [2020-12-22 08:27:27,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21620 states to 21620 states and 33154 transitions. [2020-12-22 08:27:27,716 INFO L78 Accepts]: Start accepts. Automaton has 21620 states and 33154 transitions. Word has length 67 [2020-12-22 08:27:27,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:27,717 INFO L481 AbstractCegarLoop]: Abstraction has 21620 states and 33154 transitions. [2020-12-22 08:27:27,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:27:27,717 INFO L276 IsEmpty]: Start isEmpty. Operand 21620 states and 33154 transitions. [2020-12-22 08:27:27,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:27:27,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:27,722 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 08:27:27,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:27:27,722 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:27,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:27,723 INFO L82 PathProgramCache]: Analyzing trace with hash 2333062, now seen corresponding path program 1 times [2020-12-22 08:27:27,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:27,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023534482] [2020-12-22 08:27:27,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:27,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:27:27,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023534482] [2020-12-22 08:27:27,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:27,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:27:27,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484078606] [2020-12-22 08:27:27,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:27:27,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:27,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:27:27,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:27:27,968 INFO L87 Difference]: Start difference. First operand 21620 states and 33154 transitions. Second operand 10 states. [2020-12-22 08:27:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:37,719 INFO L93 Difference]: Finished difference Result 143231 states and 219600 transitions. [2020-12-22 08:27:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-12-22 08:27:37,720 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-12-22 08:27:37,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:38,293 INFO L225 Difference]: With dead ends: 143231 [2020-12-22 08:27:38,294 INFO L226 Difference]: Without dead ends: 127121 [2020-12-22 08:27:38,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=391, Invalid=1249, Unknown=0, NotChecked=0, Total=1640 [2020-12-22 08:27:38,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127121 states. [2020-12-22 08:27:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127121 to 21780. [2020-12-22 08:27:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21780 states. [2020-12-22 08:27:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21780 states to 21780 states and 33356 transitions. [2020-12-22 08:27:40,963 INFO L78 Accepts]: Start accepts. Automaton has 21780 states and 33356 transitions. Word has length 68 [2020-12-22 08:27:40,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:40,964 INFO L481 AbstractCegarLoop]: Abstraction has 21780 states and 33356 transitions. [2020-12-22 08:27:40,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:27:40,964 INFO L276 IsEmpty]: Start isEmpty. Operand 21780 states and 33356 transitions. [2020-12-22 08:27:40,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:27:40,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:40,970 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 08:27:40,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:27:40,970 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:40,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:40,971 INFO L82 PathProgramCache]: Analyzing trace with hash -371480250, now seen corresponding path program 1 times [2020-12-22 08:27:40,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:40,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256115047] [2020-12-22 08:27:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:41,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:41,219 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 08:27:41,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256115047] [2020-12-22 08:27:41,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:41,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:27:41,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876072684] [2020-12-22 08:27:41,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:27:41,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:41,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:27:41,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:27:41,222 INFO L87 Difference]: Start difference. First operand 21780 states and 33356 transitions. Second operand 10 states. [2020-12-22 08:27:50,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:27:50,270 INFO L93 Difference]: Finished difference Result 91925 states and 140300 transitions. [2020-12-22 08:27:50,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-12-22 08:27:50,270 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-12-22 08:27:50,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:27:50,438 INFO L225 Difference]: With dead ends: 91925 [2020-12-22 08:27:50,438 INFO L226 Difference]: Without dead ends: 86803 [2020-12-22 08:27:50,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=319, Invalid=871, Unknown=0, NotChecked=0, Total=1190 [2020-12-22 08:27:50,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86803 states. [2020-12-22 08:27:53,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86803 to 21780. [2020-12-22 08:27:53,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21780 states. [2020-12-22 08:27:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21780 states to 21780 states and 33354 transitions. [2020-12-22 08:27:53,227 INFO L78 Accepts]: Start accepts. Automaton has 21780 states and 33354 transitions. Word has length 68 [2020-12-22 08:27:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:27:53,227 INFO L481 AbstractCegarLoop]: Abstraction has 21780 states and 33354 transitions. [2020-12-22 08:27:53,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:27:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 21780 states and 33354 transitions. [2020-12-22 08:27:53,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:27:53,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:27:53,232 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 08:27:53,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:27:53,232 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:27:53,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:27:53,233 INFO L82 PathProgramCache]: Analyzing trace with hash 2100624742, now seen corresponding path program 1 times [2020-12-22 08:27:53,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:27:53,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913863706] [2020-12-22 08:27:53,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:27:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:27:53,445 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 08:27:53,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913863706] [2020-12-22 08:27:53,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:27:53,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:27:53,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117265361] [2020-12-22 08:27:53,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:27:53,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:27:53,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:27:53,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:27:53,448 INFO L87 Difference]: Start difference. First operand 21780 states and 33354 transitions. Second operand 10 states. [2020-12-22 08:28:09,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:09,553 INFO L93 Difference]: Finished difference Result 150307 states and 230464 transitions. [2020-12-22 08:28:09,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-22 08:28:09,553 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-12-22 08:28:09,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:09,932 INFO L225 Difference]: With dead ends: 150307 [2020-12-22 08:28:09,932 INFO L226 Difference]: Without dead ends: 140747 [2020-12-22 08:28:09,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2020-12-22 08:28:10,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140747 states. [2020-12-22 08:28:13,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140747 to 22129. [2020-12-22 08:28:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22129 states. [2020-12-22 08:28:13,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22129 states to 22129 states and 33797 transitions. [2020-12-22 08:28:13,544 INFO L78 Accepts]: Start accepts. Automaton has 22129 states and 33797 transitions. Word has length 68 [2020-12-22 08:28:13,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:13,544 INFO L481 AbstractCegarLoop]: Abstraction has 22129 states and 33797 transitions. [2020-12-22 08:28:13,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:28:13,544 INFO L276 IsEmpty]: Start isEmpty. Operand 22129 states and 33797 transitions. [2020-12-22 08:28:13,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-22 08:28:13,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:13,550 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 08:28:13,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:28:13,550 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:13,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:13,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1059619418, now seen corresponding path program 1 times [2020-12-22 08:28:13,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:13,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542027388] [2020-12-22 08:28:13,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:13,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:13,740 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 08:28:13,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542027388] [2020-12-22 08:28:13,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:13,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:28:13,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203467449] [2020-12-22 08:28:13,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:28:13,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:13,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:28:13,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:28:13,742 INFO L87 Difference]: Start difference. First operand 22129 states and 33797 transitions. Second operand 10 states. [2020-12-22 08:28:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:32,931 INFO L93 Difference]: Finished difference Result 159874 states and 242190 transitions. [2020-12-22 08:28:32,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-22 08:28:32,932 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-12-22 08:28:32,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:33,330 INFO L225 Difference]: With dead ends: 159874 [2020-12-22 08:28:33,330 INFO L226 Difference]: Without dead ends: 138815 [2020-12-22 08:28:33,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2020-12-22 08:28:33,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138815 states. [2020-12-22 08:28:37,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138815 to 22279. [2020-12-22 08:28:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22279 states. [2020-12-22 08:28:37,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22279 states to 22279 states and 33964 transitions. [2020-12-22 08:28:37,266 INFO L78 Accepts]: Start accepts. Automaton has 22279 states and 33964 transitions. Word has length 68 [2020-12-22 08:28:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:37,266 INFO L481 AbstractCegarLoop]: Abstraction has 22279 states and 33964 transitions. [2020-12-22 08:28:37,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:28:37,266 INFO L276 IsEmpty]: Start isEmpty. Operand 22279 states and 33964 transitions. [2020-12-22 08:28:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:28:37,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:37,272 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] [2020-12-22 08:28:37,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:28:37,272 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:37,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:37,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1047773961, now seen corresponding path program 1 times [2020-12-22 08:28:37,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:37,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119601513] [2020-12-22 08:28:37,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:37,388 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 08:28:37,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119601513] [2020-12-22 08:28:37,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:37,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:28:37,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482937058] [2020-12-22 08:28:37,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 08:28:37,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:37,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 08:28:37,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 08:28:37,391 INFO L87 Difference]: Start difference. First operand 22279 states and 33964 transitions. Second operand 4 states. [2020-12-22 08:28:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:43,640 INFO L93 Difference]: Finished difference Result 60593 states and 92421 transitions. [2020-12-22 08:28:43,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:28:43,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-12-22 08:28:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:43,691 INFO L225 Difference]: With dead ends: 60593 [2020-12-22 08:28:43,691 INFO L226 Difference]: Without dead ends: 39867 [2020-12-22 08:28:43,706 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 08:28:43,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39867 states. [2020-12-22 08:28:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39867 to 39541. [2020-12-22 08:28:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39541 states. [2020-12-22 08:28:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39541 states to 39541 states and 59710 transitions. [2020-12-22 08:28:49,227 INFO L78 Accepts]: Start accepts. Automaton has 39541 states and 59710 transitions. Word has length 69 [2020-12-22 08:28:49,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:28:49,227 INFO L481 AbstractCegarLoop]: Abstraction has 39541 states and 59710 transitions. [2020-12-22 08:28:49,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 08:28:49,228 INFO L276 IsEmpty]: Start isEmpty. Operand 39541 states and 59710 transitions. [2020-12-22 08:28:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:28:49,233 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:28:49,233 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] [2020-12-22 08:28:49,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:28:49,234 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:28:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:28:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1802228217, now seen corresponding path program 1 times [2020-12-22 08:28:49,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:28:49,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055243401] [2020-12-22 08:28:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:28:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:28:49,290 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 08:28:49,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055243401] [2020-12-22 08:28:49,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:28:49,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:28:49,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782125793] [2020-12-22 08:28:49,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:28:49,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:28:49,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:28:49,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:28:49,293 INFO L87 Difference]: Start difference. First operand 39541 states and 59710 transitions. Second operand 3 states. [2020-12-22 08:28:56,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:28:56,721 INFO L93 Difference]: Finished difference Result 74323 states and 112418 transitions. [2020-12-22 08:28:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:28:56,721 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:28:56,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:28:56,785 INFO L225 Difference]: With dead ends: 74323 [2020-12-22 08:28:56,786 INFO L226 Difference]: Without dead ends: 51801 [2020-12-22 08:28:56,807 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 08:28:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51801 states. [2020-12-22 08:29:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51801 to 51055. [2020-12-22 08:29:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51055 states. [2020-12-22 08:29:04,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51055 states to 51055 states and 76206 transitions. [2020-12-22 08:29:04,278 INFO L78 Accepts]: Start accepts. Automaton has 51055 states and 76206 transitions. Word has length 69 [2020-12-22 08:29:04,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:04,278 INFO L481 AbstractCegarLoop]: Abstraction has 51055 states and 76206 transitions. [2020-12-22 08:29:04,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:04,279 INFO L276 IsEmpty]: Start isEmpty. Operand 51055 states and 76206 transitions. [2020-12-22 08:29:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:29:04,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:04,284 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] [2020-12-22 08:29:04,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:29:04,284 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:04,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1041130329, now seen corresponding path program 1 times [2020-12-22 08:29:04,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:04,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456423282] [2020-12-22 08:29:04,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:04,332 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 08:29:04,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456423282] [2020-12-22 08:29:04,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:04,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:04,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24441042] [2020-12-22 08:29:04,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:04,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:04,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:04,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:04,334 INFO L87 Difference]: Start difference. First operand 51055 states and 76206 transitions. Second operand 3 states. [2020-12-22 08:29:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:14,562 INFO L93 Difference]: Finished difference Result 113107 states and 169015 transitions. [2020-12-22 08:29:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:29:14,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:29:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:14,644 INFO L225 Difference]: With dead ends: 113107 [2020-12-22 08:29:14,644 INFO L226 Difference]: Without dead ends: 67924 [2020-12-22 08:29:14,671 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 08:29:14,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67924 states. [2020-12-22 08:29:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67924 to 67718. [2020-12-22 08:29:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67718 states. [2020-12-22 08:29:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67718 states to 67718 states and 99863 transitions. [2020-12-22 08:29:24,929 INFO L78 Accepts]: Start accepts. Automaton has 67718 states and 99863 transitions. Word has length 69 [2020-12-22 08:29:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:24,929 INFO L481 AbstractCegarLoop]: Abstraction has 67718 states and 99863 transitions. [2020-12-22 08:29:24,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand 67718 states and 99863 transitions. [2020-12-22 08:29:24,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:29:24,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:24,934 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] [2020-12-22 08:29:24,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:29:24,934 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:24,935 INFO L82 PathProgramCache]: Analyzing trace with hash -933815240, now seen corresponding path program 1 times [2020-12-22 08:29:24,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:24,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827113248] [2020-12-22 08:29:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:24,980 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 08:29:24,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827113248] [2020-12-22 08:29:24,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:24,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:24,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372303608] [2020-12-22 08:29:24,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:24,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:24,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:24,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:24,982 INFO L87 Difference]: Start difference. First operand 67718 states and 99863 transitions. Second operand 3 states. [2020-12-22 08:29:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:29:36,953 INFO L93 Difference]: Finished difference Result 98021 states and 143859 transitions. [2020-12-22 08:29:36,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:29:36,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:29:36,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:29:37,045 INFO L225 Difference]: With dead ends: 98021 [2020-12-22 08:29:37,046 INFO L226 Difference]: Without dead ends: 77479 [2020-12-22 08:29:37,067 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 08:29:37,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77479 states. [2020-12-22 08:29:48,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77479 to 72254. [2020-12-22 08:29:48,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72254 states. [2020-12-22 08:29:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72254 states to 72254 states and 104755 transitions. [2020-12-22 08:29:48,317 INFO L78 Accepts]: Start accepts. Automaton has 72254 states and 104755 transitions. Word has length 69 [2020-12-22 08:29:48,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:29:48,317 INFO L481 AbstractCegarLoop]: Abstraction has 72254 states and 104755 transitions. [2020-12-22 08:29:48,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:29:48,317 INFO L276 IsEmpty]: Start isEmpty. Operand 72254 states and 104755 transitions. [2020-12-22 08:29:48,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-12-22 08:29:48,321 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:29:48,321 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] [2020-12-22 08:29:48,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:29:48,321 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:29:48,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:29:48,322 INFO L82 PathProgramCache]: Analyzing trace with hash 804290264, now seen corresponding path program 1 times [2020-12-22 08:29:48,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:29:48,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898757488] [2020-12-22 08:29:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:29:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:29:48,382 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 08:29:48,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898757488] [2020-12-22 08:29:48,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:29:48,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:29:48,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773446981] [2020-12-22 08:29:48,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:29:48,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:29:48,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:29:48,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:29:48,386 INFO L87 Difference]: Start difference. First operand 72254 states and 104755 transitions. Second operand 3 states. [2020-12-22 08:30:03,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:30:03,647 INFO L93 Difference]: Finished difference Result 158463 states and 229396 transitions. [2020-12-22 08:30:03,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:30:03,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2020-12-22 08:30:03,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:30:03,789 INFO L225 Difference]: With dead ends: 158463 [2020-12-22 08:30:03,789 INFO L226 Difference]: Without dead ends: 92079 [2020-12-22 08:30:03,833 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 08:30:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92079 states. [2020-12-22 08:30:18,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92079 to 91009. [2020-12-22 08:30:18,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91009 states. [2020-12-22 08:30:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91009 states to 91009 states and 129254 transitions. [2020-12-22 08:30:19,031 INFO L78 Accepts]: Start accepts. Automaton has 91009 states and 129254 transitions. Word has length 69 [2020-12-22 08:30:19,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:30:19,031 INFO L481 AbstractCegarLoop]: Abstraction has 91009 states and 129254 transitions. [2020-12-22 08:30:19,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:30:19,031 INFO L276 IsEmpty]: Start isEmpty. Operand 91009 states and 129254 transitions. [2020-12-22 08:30:19,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-12-22 08:30:19,034 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:30:19,034 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 08:30:19,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:30:19,035 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:30:19,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:30:19,035 INFO L82 PathProgramCache]: Analyzing trace with hash -77781245, now seen corresponding path program 1 times [2020-12-22 08:30:19,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:30:19,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380831130] [2020-12-22 08:30:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:30:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:30:19,119 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 08:30:19,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380831130] [2020-12-22 08:30:19,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:30:19,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 08:30:19,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064847870] [2020-12-22 08:30:19,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:30:19,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:30:19,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:30:19,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:30:19,121 INFO L87 Difference]: Start difference. First operand 91009 states and 129254 transitions. Second operand 6 states. [2020-12-22 08:31:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:31:04,535 INFO L93 Difference]: Finished difference Result 336366 states and 477998 transitions. [2020-12-22 08:31:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 08:31:04,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-12-22 08:31:04,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:31:05,202 INFO L225 Difference]: With dead ends: 336366 [2020-12-22 08:31:05,202 INFO L226 Difference]: Without dead ends: 258176 [2020-12-22 08:31:05,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:31:05,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258176 states.