/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.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 08:56:52,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 08:56:52,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 08:56:52,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 08:56:52,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 08:56:52,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 08:56:52,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 08:56:52,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 08:56:52,333 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 08:56:52,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 08:56:52,342 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 08:56:52,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 08:56:52,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 08:56:52,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 08:56:52,351 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 08:56:52,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 08:56:52,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 08:56:52,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 08:56:52,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 08:56:52,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 08:56:52,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 08:56:52,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 08:56:52,410 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 08:56:52,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 08:56:52,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 08:56:52,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 08:56:52,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 08:56:52,438 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 08:56:52,439 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 08:56:52,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 08:56:52,441 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 08:56:52,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 08:56:52,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 08:56:52,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 08:56:52,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 08:56:52,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 08:56:52,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 08:56:52,514 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 08:56:52,514 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 08:56:52,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 08:56:52,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 08:56:52,519 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 08:56:52,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 08:56:52,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 08:56:52,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 08:56:52,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 08:56:52,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 08:56:52,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 08:56:52,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 08:56:52,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 08:56:52,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 08:56:52,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 08:56:52,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 08:56:52,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 08:56:52,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 08:56:52,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 08:56:52,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 08:56:52,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 08:56:52,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 08:56:52,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 08:56:52,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 08:56:52,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 08:56:52,527 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 08:56:52,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 08:56:52,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 08:56:52,987 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 08:56:52,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 08:56:52,990 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 08:56:52,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:56:53,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78f85cec/74b4a17f63d3403bbdbdb4786ac3b33c/FLAGc77693dbc [2020-12-22 08:56:53,819 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 08:56:53,820 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:56:53,836 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78f85cec/74b4a17f63d3403bbdbdb4786ac3b33c/FLAGc77693dbc [2020-12-22 08:56:54,147 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a78f85cec/74b4a17f63d3403bbdbdb4786ac3b33c [2020-12-22 08:56:54,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 08:56:54,155 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 08:56:54,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 08:56:54,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 08:56:54,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 08:56:54,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:54,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f9106d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54, skipping insertion in model container [2020-12-22 08:56:54,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:54,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 08:56:54,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 08:56:54,535 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.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9974,9987] [2020-12-22 08:56:54,593 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:56:54,611 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 08:56:54,739 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.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9974,9987] [2020-12-22 08:56:54,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 08:56:54,805 INFO L208 MainTranslator]: Completed translation [2020-12-22 08:56:54,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54 WrapperNode [2020-12-22 08:56:54,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 08:56:54,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 08:56:54,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 08:56:54,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 08:56:54,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:54,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:54,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 08:56:54,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 08:56:54,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 08:56:54,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 08:56:54,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:54,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:54,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:54,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:54,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:55,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:55,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (1/1) ... [2020-12-22 08:56:55,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 08:56:55,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 08:56:55,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 08:56:55,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 08:56:55,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (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 08:56:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 08:56:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 08:56:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 08:56:55,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 08:56:56,649 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 08:56:56,650 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 08:56:56,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:56 BoogieIcfgContainer [2020-12-22 08:56:56,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 08:56:56,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 08:56:56,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 08:56:56,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 08:56:56,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 08:56:54" (1/3) ... [2020-12-22 08:56:56,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7bbfc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:56, skipping insertion in model container [2020-12-22 08:56:56,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 08:56:54" (2/3) ... [2020-12-22 08:56:56,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7bbfc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 08:56:56, skipping insertion in model container [2020-12-22 08:56:56,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 08:56:56" (3/3) ... [2020-12-22 08:56:56,661 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-12-22 08:56:56,668 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 08:56:56,673 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 08:56:56,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 08:56:56,730 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 08:56:56,730 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 08:56:56,730 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 08:56:56,730 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 08:56:56,730 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 08:56:56,731 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 08:56:56,731 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 08:56:56,731 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 08:56:56,754 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states. [2020-12-22 08:56:56,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-22 08:56:56,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:56,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:56,768 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:56,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:56,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1361095482, now seen corresponding path program 1 times [2020-12-22 08:56:56,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:56,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814287316] [2020-12-22 08:56:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:57,468 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 08:56:57,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814287316] [2020-12-22 08:56:57,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:57,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:56:57,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001005119] [2020-12-22 08:56:57,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:56:57,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:57,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:56:57,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:56:57,519 INFO L87 Difference]: Start difference. First operand 201 states. Second operand 3 states. [2020-12-22 08:56:57,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:57,782 INFO L93 Difference]: Finished difference Result 391 states and 653 transitions. [2020-12-22 08:56:57,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:56:57,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-22 08:56:57,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:57,832 INFO L225 Difference]: With dead ends: 391 [2020-12-22 08:56:57,832 INFO L226 Difference]: Without dead ends: 301 [2020-12-22 08:56:57,837 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 08:56:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-12-22 08:56:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 299. [2020-12-22 08:56:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-12-22 08:56:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 431 transitions. [2020-12-22 08:56:57,959 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 431 transitions. Word has length 107 [2020-12-22 08:56:57,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:57,961 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 431 transitions. [2020-12-22 08:56:57,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:56:57,961 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 431 transitions. [2020-12-22 08:56:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-12-22 08:56:57,970 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:57,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:57,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 08:56:57,972 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:57,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1847794712, now seen corresponding path program 1 times [2020-12-22 08:56:57,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:57,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122606667] [2020-12-22 08:56:57,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:58,304 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 08:56:58,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122606667] [2020-12-22 08:56:58,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:58,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:56:58,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305927675] [2020-12-22 08:56:58,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:56:58,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:58,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:56:58,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:56:58,312 INFO L87 Difference]: Start difference. First operand 299 states and 431 transitions. Second operand 5 states. [2020-12-22 08:56:58,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:58,580 INFO L93 Difference]: Finished difference Result 522 states and 780 transitions. [2020-12-22 08:56:58,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:58,580 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2020-12-22 08:56:58,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:58,583 INFO L225 Difference]: With dead ends: 522 [2020-12-22 08:56:58,583 INFO L226 Difference]: Without dead ends: 299 [2020-12-22 08:56:58,586 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 08:56:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-12-22 08:56:58,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2020-12-22 08:56:58,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 299 states. [2020-12-22 08:56:58,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 428 transitions. [2020-12-22 08:56:58,632 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 428 transitions. Word has length 109 [2020-12-22 08:56:58,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:58,637 INFO L481 AbstractCegarLoop]: Abstraction has 299 states and 428 transitions. [2020-12-22 08:56:58,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:56:58,637 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 428 transitions. [2020-12-22 08:56:58,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-12-22 08:56:58,639 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:58,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:58,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 08:56:58,640 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:58,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:58,644 INFO L82 PathProgramCache]: Analyzing trace with hash 512568948, now seen corresponding path program 1 times [2020-12-22 08:56:58,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:58,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852589702] [2020-12-22 08:56:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:58,827 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 08:56:58,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852589702] [2020-12-22 08:56:58,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:58,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:58,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854352566] [2020-12-22 08:56:58,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:58,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:58,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:58,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:58,831 INFO L87 Difference]: Start difference. First operand 299 states and 428 transitions. Second operand 6 states. [2020-12-22 08:56:59,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:59,155 INFO L93 Difference]: Finished difference Result 743 states and 1115 transitions. [2020-12-22 08:56:59,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:59,156 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2020-12-22 08:56:59,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:59,159 INFO L225 Difference]: With dead ends: 743 [2020-12-22 08:56:59,160 INFO L226 Difference]: Without dead ends: 500 [2020-12-22 08:56:59,162 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 08:56:59,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2020-12-22 08:56:59,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 498. [2020-12-22 08:56:59,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2020-12-22 08:56:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 740 transitions. [2020-12-22 08:56:59,196 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 740 transitions. Word has length 110 [2020-12-22 08:56:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:59,198 INFO L481 AbstractCegarLoop]: Abstraction has 498 states and 740 transitions. [2020-12-22 08:56:59,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 740 transitions. [2020-12-22 08:56:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-22 08:56:59,200 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:59,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:56:59,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 08:56:59,201 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:59,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:59,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1977473420, now seen corresponding path program 1 times [2020-12-22 08:56:59,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:59,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709988059] [2020-12-22 08:56:59,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:59,340 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 08:56:59,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709988059] [2020-12-22 08:56:59,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:59,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:59,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906368942] [2020-12-22 08:56:59,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:59,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:59,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:59,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:59,343 INFO L87 Difference]: Start difference. First operand 498 states and 740 transitions. Second operand 6 states. [2020-12-22 08:56:59,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:56:59,645 INFO L93 Difference]: Finished difference Result 1252 states and 1917 transitions. [2020-12-22 08:56:59,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:56:59,645 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-12-22 08:56:59,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:56:59,654 INFO L225 Difference]: With dead ends: 1252 [2020-12-22 08:56:59,655 INFO L226 Difference]: Without dead ends: 826 [2020-12-22 08:56:59,656 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 08:56:59,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2020-12-22 08:56:59,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 824. [2020-12-22 08:56:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 824 states. [2020-12-22 08:56:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 1247 transitions. [2020-12-22 08:56:59,723 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 1247 transitions. Word has length 111 [2020-12-22 08:56:59,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:56:59,725 INFO L481 AbstractCegarLoop]: Abstraction has 824 states and 1247 transitions. [2020-12-22 08:56:59,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:56:59,725 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 1247 transitions. [2020-12-22 08:56:59,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 08:56:59,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:56:59,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:56:59,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 08:56:59,728 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:56:59,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:56:59,729 INFO L82 PathProgramCache]: Analyzing trace with hash -18016652, now seen corresponding path program 1 times [2020-12-22 08:56:59,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:56:59,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541293253] [2020-12-22 08:56:59,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:56:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:56:59,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:56:59,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541293253] [2020-12-22 08:56:59,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:56:59,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:56:59,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223137134] [2020-12-22 08:56:59,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:56:59,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:56:59,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:56:59,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:56:59,940 INFO L87 Difference]: Start difference. First operand 824 states and 1247 transitions. Second operand 6 states. [2020-12-22 08:57:00,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:00,350 INFO L93 Difference]: Finished difference Result 2250 states and 3468 transitions. [2020-12-22 08:57:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:57:00,353 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-12-22 08:57:00,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:00,361 INFO L225 Difference]: With dead ends: 2250 [2020-12-22 08:57:00,361 INFO L226 Difference]: Without dead ends: 1494 [2020-12-22 08:57:00,363 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 08:57:00,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2020-12-22 08:57:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1492. [2020-12-22 08:57:00,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1492 states. [2020-12-22 08:57:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2282 transitions. [2020-12-22 08:57:00,474 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2282 transitions. Word has length 112 [2020-12-22 08:57:00,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:00,474 INFO L481 AbstractCegarLoop]: Abstraction has 1492 states and 2282 transitions. [2020-12-22 08:57:00,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:57:00,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2282 transitions. [2020-12-22 08:57:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-12-22 08:57:00,476 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:00,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:00,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 08:57:00,477 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash -728020480, now seen corresponding path program 1 times [2020-12-22 08:57:00,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:00,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366990635] [2020-12-22 08:57:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:00,634 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 08:57:00,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366990635] [2020-12-22 08:57:00,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:00,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 08:57:00,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068753585] [2020-12-22 08:57:00,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 08:57:00,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:00,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 08:57:00,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 08:57:00,637 INFO L87 Difference]: Start difference. First operand 1492 states and 2282 transitions. Second operand 6 states. [2020-12-22 08:57:01,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:01,263 INFO L93 Difference]: Finished difference Result 4098 states and 6338 transitions. [2020-12-22 08:57:01,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:57:01,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2020-12-22 08:57:01,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:01,278 INFO L225 Difference]: With dead ends: 4098 [2020-12-22 08:57:01,279 INFO L226 Difference]: Without dead ends: 2686 [2020-12-22 08:57:01,282 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 08:57:01,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2686 states. [2020-12-22 08:57:01,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2686 to 2684. [2020-12-22 08:57:01,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2684 states. [2020-12-22 08:57:01,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4121 transitions. [2020-12-22 08:57:01,566 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4121 transitions. Word has length 113 [2020-12-22 08:57:01,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:01,566 INFO L481 AbstractCegarLoop]: Abstraction has 2684 states and 4121 transitions. [2020-12-22 08:57:01,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 08:57:01,567 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4121 transitions. [2020-12-22 08:57:01,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-12-22 08:57:01,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:01,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:01,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 08:57:01,570 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:01,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:01,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1444052176, now seen corresponding path program 1 times [2020-12-22 08:57:01,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:01,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401267914] [2020-12-22 08:57:01,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:01,691 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 08:57:01,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401267914] [2020-12-22 08:57:01,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:01,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:57:01,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266008898] [2020-12-22 08:57:01,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:57:01,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:01,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:57:01,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:57:01,696 INFO L87 Difference]: Start difference. First operand 2684 states and 4121 transitions. Second operand 5 states. [2020-12-22 08:57:02,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:02,165 INFO L93 Difference]: Finished difference Result 5304 states and 8176 transitions. [2020-12-22 08:57:02,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:57:02,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-12-22 08:57:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:02,180 INFO L225 Difference]: With dead ends: 5304 [2020-12-22 08:57:02,180 INFO L226 Difference]: Without dead ends: 2684 [2020-12-22 08:57:02,188 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 08:57:02,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2020-12-22 08:57:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2684. [2020-12-22 08:57:02,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2684 states. [2020-12-22 08:57:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4088 transitions. [2020-12-22 08:57:02,424 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4088 transitions. Word has length 114 [2020-12-22 08:57:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:02,424 INFO L481 AbstractCegarLoop]: Abstraction has 2684 states and 4088 transitions. [2020-12-22 08:57:02,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:57:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4088 transitions. [2020-12-22 08:57:02,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-12-22 08:57:02,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:02,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:02,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 08:57:02,427 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:02,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:02,428 INFO L82 PathProgramCache]: Analyzing trace with hash 968610000, now seen corresponding path program 1 times [2020-12-22 08:57:02,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:02,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251024509] [2020-12-22 08:57:02,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:02,586 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 08:57:02,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251024509] [2020-12-22 08:57:02,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:02,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 08:57:02,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684400693] [2020-12-22 08:57:02,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 08:57:02,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:02,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 08:57:02,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 08:57:02,588 INFO L87 Difference]: Start difference. First operand 2684 states and 4088 transitions. Second operand 5 states. [2020-12-22 08:57:03,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:03,038 INFO L93 Difference]: Finished difference Result 5308 states and 8115 transitions. [2020-12-22 08:57:03,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 08:57:03,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-12-22 08:57:03,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:03,052 INFO L225 Difference]: With dead ends: 5308 [2020-12-22 08:57:03,053 INFO L226 Difference]: Without dead ends: 2684 [2020-12-22 08:57:03,057 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 08:57:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2020-12-22 08:57:03,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2684. [2020-12-22 08:57:03,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2684 states. [2020-12-22 08:57:03,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 4055 transitions. [2020-12-22 08:57:03,269 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 4055 transitions. Word has length 115 [2020-12-22 08:57:03,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:03,269 INFO L481 AbstractCegarLoop]: Abstraction has 2684 states and 4055 transitions. [2020-12-22 08:57:03,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 08:57:03,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 4055 transitions. [2020-12-22 08:57:03,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:57:03,272 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:03,272 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:03,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 08:57:03,273 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:03,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1957898812, now seen corresponding path program 1 times [2020-12-22 08:57:03,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:03,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516934825] [2020-12-22 08:57:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:03,536 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 08:57:03,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516934825] [2020-12-22 08:57:03,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:03,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:03,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727789946] [2020-12-22 08:57:03,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:57:03,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:03,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:57:03,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:57:03,539 INFO L87 Difference]: Start difference. First operand 2684 states and 4055 transitions. Second operand 9 states. [2020-12-22 08:57:05,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:05,718 INFO L93 Difference]: Finished difference Result 20736 states and 31587 transitions. [2020-12-22 08:57:05,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:57:05,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-12-22 08:57:05,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:05,816 INFO L225 Difference]: With dead ends: 20736 [2020-12-22 08:57:05,817 INFO L226 Difference]: Without dead ends: 18334 [2020-12-22 08:57:05,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:57:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18334 states. [2020-12-22 08:57:06,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18334 to 3911. [2020-12-22 08:57:06,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3911 states. [2020-12-22 08:57:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 5935 transitions. [2020-12-22 08:57:06,560 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 5935 transitions. Word has length 116 [2020-12-22 08:57:06,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:06,561 INFO L481 AbstractCegarLoop]: Abstraction has 3911 states and 5935 transitions. [2020-12-22 08:57:06,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:57:06,561 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 5935 transitions. [2020-12-22 08:57:06,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:57:06,563 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:06,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:06,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 08:57:06,564 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:06,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1903030168, now seen corresponding path program 1 times [2020-12-22 08:57:06,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:06,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232658786] [2020-12-22 08:57:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:06,808 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 08:57:06,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232658786] [2020-12-22 08:57:06,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:06,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:06,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159944286] [2020-12-22 08:57:06,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:57:06,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:06,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:57:06,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:57:06,811 INFO L87 Difference]: Start difference. First operand 3911 states and 5935 transitions. Second operand 9 states. [2020-12-22 08:57:09,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:09,320 INFO L93 Difference]: Finished difference Result 21692 states and 33063 transitions. [2020-12-22 08:57:09,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:57:09,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-12-22 08:57:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:09,396 INFO L225 Difference]: With dead ends: 21692 [2020-12-22 08:57:09,397 INFO L226 Difference]: Without dead ends: 19290 [2020-12-22 08:57:09,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:57:09,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19290 states. [2020-12-22 08:57:10,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19290 to 6502. [2020-12-22 08:57:10,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6502 states. [2020-12-22 08:57:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6502 states to 6502 states and 9907 transitions. [2020-12-22 08:57:10,416 INFO L78 Accepts]: Start accepts. Automaton has 6502 states and 9907 transitions. Word has length 116 [2020-12-22 08:57:10,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:10,416 INFO L481 AbstractCegarLoop]: Abstraction has 6502 states and 9907 transitions. [2020-12-22 08:57:10,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:57:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 6502 states and 9907 transitions. [2020-12-22 08:57:10,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:57:10,420 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:10,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:10,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 08:57:10,421 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:10,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:10,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1390282604, now seen corresponding path program 1 times [2020-12-22 08:57:10,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:10,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070859928] [2020-12-22 08:57:10,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:57:10,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070859928] [2020-12-22 08:57:10,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:10,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:10,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848420485] [2020-12-22 08:57:10,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:57:10,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:10,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:57:10,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:57:10,628 INFO L87 Difference]: Start difference. First operand 6502 states and 9907 transitions. Second operand 9 states. [2020-12-22 08:57:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:13,320 INFO L93 Difference]: Finished difference Result 22666 states and 34557 transitions. [2020-12-22 08:57:13,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:57:13,321 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-12-22 08:57:13,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:13,363 INFO L225 Difference]: With dead ends: 22666 [2020-12-22 08:57:13,363 INFO L226 Difference]: Without dead ends: 20264 [2020-12-22 08:57:13,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:57:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20264 states. [2020-12-22 08:57:14,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20264 to 7758. [2020-12-22 08:57:14,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7758 states. [2020-12-22 08:57:14,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 11831 transitions. [2020-12-22 08:57:14,505 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 11831 transitions. Word has length 116 [2020-12-22 08:57:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:14,506 INFO L481 AbstractCegarLoop]: Abstraction has 7758 states and 11831 transitions. [2020-12-22 08:57:14,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:57:14,506 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 11831 transitions. [2020-12-22 08:57:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:57:14,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:14,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:14,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 08:57:14,511 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:14,511 INFO L82 PathProgramCache]: Analyzing trace with hash 2053503990, now seen corresponding path program 1 times [2020-12-22 08:57:14,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:14,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480635023] [2020-12-22 08:57:14,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:14,684 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 08:57:14,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480635023] [2020-12-22 08:57:14,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:14,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:14,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647539756] [2020-12-22 08:57:14,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:57:14,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:14,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:57:14,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:57:14,687 INFO L87 Difference]: Start difference. First operand 7758 states and 11831 transitions. Second operand 9 states. [2020-12-22 08:57:17,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:17,309 INFO L93 Difference]: Finished difference Result 23744 states and 36211 transitions. [2020-12-22 08:57:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:57:17,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-12-22 08:57:17,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:17,353 INFO L225 Difference]: With dead ends: 23744 [2020-12-22 08:57:17,353 INFO L226 Difference]: Without dead ends: 21342 [2020-12-22 08:57:17,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:57:17,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21342 states. [2020-12-22 08:57:18,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21342 to 8998. [2020-12-22 08:57:18,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8998 states. [2020-12-22 08:57:18,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8998 states to 8998 states and 13727 transitions. [2020-12-22 08:57:18,771 INFO L78 Accepts]: Start accepts. Automaton has 8998 states and 13727 transitions. Word has length 116 [2020-12-22 08:57:18,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:18,772 INFO L481 AbstractCegarLoop]: Abstraction has 8998 states and 13727 transitions. [2020-12-22 08:57:18,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:57:18,772 INFO L276 IsEmpty]: Start isEmpty. Operand 8998 states and 13727 transitions. [2020-12-22 08:57:18,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:57:18,776 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:18,776 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:18,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 08:57:18,777 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:18,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:18,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1093472964, now seen corresponding path program 1 times [2020-12-22 08:57:18,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:18,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416482521] [2020-12-22 08:57:18,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:18,846 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 08:57:18,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416482521] [2020-12-22 08:57:18,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:18,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:57:18,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386920274] [2020-12-22 08:57:18,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:57:18,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:18,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:57:18,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:57:18,849 INFO L87 Difference]: Start difference. First operand 8998 states and 13727 transitions. Second operand 3 states. [2020-12-22 08:57:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:20,990 INFO L93 Difference]: Finished difference Result 25482 states and 38769 transitions. [2020-12-22 08:57:20,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:57:20,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 08:57:20,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:21,026 INFO L225 Difference]: With dead ends: 25482 [2020-12-22 08:57:21,026 INFO L226 Difference]: Without dead ends: 16920 [2020-12-22 08:57:21,045 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 08:57:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16920 states. [2020-12-22 08:57:23,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16920 to 16694. [2020-12-22 08:57:23,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16694 states. [2020-12-22 08:57:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16694 states to 16694 states and 25135 transitions. [2020-12-22 08:57:23,526 INFO L78 Accepts]: Start accepts. Automaton has 16694 states and 25135 transitions. Word has length 116 [2020-12-22 08:57:23,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:23,526 INFO L481 AbstractCegarLoop]: Abstraction has 16694 states and 25135 transitions. [2020-12-22 08:57:23,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:57:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 16694 states and 25135 transitions. [2020-12-22 08:57:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:57:23,531 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:23,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:23,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 08:57:23,531 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:23,532 INFO L82 PathProgramCache]: Analyzing trace with hash -849395301, now seen corresponding path program 1 times [2020-12-22 08:57:23,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:23,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005537253] [2020-12-22 08:57:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:23,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 08:57:23,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005537253] [2020-12-22 08:57:23,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:23,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 08:57:23,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193424085] [2020-12-22 08:57:23,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 08:57:23,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:23,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 08:57:23,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 08:57:23,611 INFO L87 Difference]: Start difference. First operand 16694 states and 25135 transitions. Second operand 3 states. [2020-12-22 08:57:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:27,235 INFO L93 Difference]: Finished difference Result 44554 states and 67089 transitions. [2020-12-22 08:57:27,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 08:57:27,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2020-12-22 08:57:27,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:27,274 INFO L225 Difference]: With dead ends: 44554 [2020-12-22 08:57:27,275 INFO L226 Difference]: Without dead ends: 28296 [2020-12-22 08:57:27,299 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 08:57:27,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28296 states. [2020-12-22 08:57:31,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28296 to 28294. [2020-12-22 08:57:31,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28294 states. [2020-12-22 08:57:31,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28294 states to 28294 states and 42383 transitions. [2020-12-22 08:57:31,252 INFO L78 Accepts]: Start accepts. Automaton has 28294 states and 42383 transitions. Word has length 116 [2020-12-22 08:57:31,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:31,252 INFO L481 AbstractCegarLoop]: Abstraction has 28294 states and 42383 transitions. [2020-12-22 08:57:31,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 08:57:31,252 INFO L276 IsEmpty]: Start isEmpty. Operand 28294 states and 42383 transitions. [2020-12-22 08:57:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:57:31,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:31,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:31,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-22 08:57:31,258 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:31,258 INFO L82 PathProgramCache]: Analyzing trace with hash 197694076, now seen corresponding path program 1 times [2020-12-22 08:57:31,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:31,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729298019] [2020-12-22 08:57:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:31,477 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 08:57:31,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729298019] [2020-12-22 08:57:31,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:31,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:31,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934034608] [2020-12-22 08:57:31,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:57:31,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:31,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:57:31,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:57:31,480 INFO L87 Difference]: Start difference. First operand 28294 states and 42383 transitions. Second operand 9 states. [2020-12-22 08:57:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:41,688 INFO L93 Difference]: Finished difference Result 74570 states and 111901 transitions. [2020-12-22 08:57:41,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:57:41,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-12-22 08:57:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:41,759 INFO L225 Difference]: With dead ends: 74570 [2020-12-22 08:57:41,759 INFO L226 Difference]: Without dead ends: 67672 [2020-12-22 08:57:41,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:57:41,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67672 states. [2020-12-22 08:57:46,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67672 to 32950. [2020-12-22 08:57:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32950 states. [2020-12-22 08:57:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32950 states to 32950 states and 49359 transitions. [2020-12-22 08:57:46,876 INFO L78 Accepts]: Start accepts. Automaton has 32950 states and 49359 transitions. Word has length 116 [2020-12-22 08:57:46,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:57:46,877 INFO L481 AbstractCegarLoop]: Abstraction has 32950 states and 49359 transitions. [2020-12-22 08:57:46,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:57:46,877 INFO L276 IsEmpty]: Start isEmpty. Operand 32950 states and 49359 transitions. [2020-12-22 08:57:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:57:46,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:57:46,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:57:46,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-22 08:57:46,883 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:57:46,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:57:46,883 INFO L82 PathProgramCache]: Analyzing trace with hash 2050931402, now seen corresponding path program 1 times [2020-12-22 08:57:46,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:57:46,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261769136] [2020-12-22 08:57:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:57:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:57:47,094 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 08:57:47,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261769136] [2020-12-22 08:57:47,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:57:47,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:57:47,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316684145] [2020-12-22 08:57:47,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:57:47,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:57:47,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:57:47,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:57:47,099 INFO L87 Difference]: Start difference. First operand 32950 states and 49359 transitions. Second operand 9 states. [2020-12-22 08:57:58,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:57:58,579 INFO L93 Difference]: Finished difference Result 80166 states and 120303 transitions. [2020-12-22 08:57:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:57:58,579 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-12-22 08:57:58,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:57:58,664 INFO L225 Difference]: With dead ends: 80166 [2020-12-22 08:57:58,664 INFO L226 Difference]: Without dead ends: 73268 [2020-12-22 08:57:58,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:57:58,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73268 states. [2020-12-22 08:58:04,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73268 to 37640. [2020-12-22 08:58:04,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37640 states. [2020-12-22 08:58:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37640 states to 37640 states and 56387 transitions. [2020-12-22 08:58:04,480 INFO L78 Accepts]: Start accepts. Automaton has 37640 states and 56387 transitions. Word has length 116 [2020-12-22 08:58:04,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:58:04,480 INFO L481 AbstractCegarLoop]: Abstraction has 37640 states and 56387 transitions. [2020-12-22 08:58:04,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:58:04,481 INFO L276 IsEmpty]: Start isEmpty. Operand 37640 states and 56387 transitions. [2020-12-22 08:58:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-12-22 08:58:04,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:58:04,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:58:04,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 08:58:04,486 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:58:04,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:58:04,487 INFO L82 PathProgramCache]: Analyzing trace with hash 653892510, now seen corresponding path program 1 times [2020-12-22 08:58:04,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:58:04,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777531638] [2020-12-22 08:58:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:58:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:58:04,665 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 08:58:04,665 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777531638] [2020-12-22 08:58:04,665 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:58:04,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:58:04,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668763009] [2020-12-22 08:58:04,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 08:58:04,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:58:04,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 08:58:04,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-12-22 08:58:04,667 INFO L87 Difference]: Start difference. First operand 37640 states and 56387 transitions. Second operand 9 states. [2020-12-22 08:58:17,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:58:17,796 INFO L93 Difference]: Finished difference Result 85524 states and 128343 transitions. [2020-12-22 08:58:17,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 08:58:17,796 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-12-22 08:58:17,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:58:17,879 INFO L225 Difference]: With dead ends: 85524 [2020-12-22 08:58:17,880 INFO L226 Difference]: Without dead ends: 78626 [2020-12-22 08:58:17,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-12-22 08:58:17,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78626 states. [2020-12-22 08:58:25,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78626 to 42379. [2020-12-22 08:58:25,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42379 states. [2020-12-22 08:58:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42379 states to 42379 states and 63491 transitions. [2020-12-22 08:58:25,082 INFO L78 Accepts]: Start accepts. Automaton has 42379 states and 63491 transitions. Word has length 116 [2020-12-22 08:58:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:58:25,083 INFO L481 AbstractCegarLoop]: Abstraction has 42379 states and 63491 transitions. [2020-12-22 08:58:25,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 08:58:25,083 INFO L276 IsEmpty]: Start isEmpty. Operand 42379 states and 63491 transitions. [2020-12-22 08:58:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-22 08:58:25,088 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:58:25,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:58:25,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 08:58:25,089 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:58:25,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:58:25,090 INFO L82 PathProgramCache]: Analyzing trace with hash 695724750, now seen corresponding path program 1 times [2020-12-22 08:58:25,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:58:25,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250651199] [2020-12-22 08:58:25,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:58:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:58:25,393 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 08:58:25,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250651199] [2020-12-22 08:58:25,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:58:25,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:58:25,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16820489] [2020-12-22 08:58:25,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:58:25,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:58:25,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:58:25,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:58:25,396 INFO L87 Difference]: Start difference. First operand 42379 states and 63491 transitions. Second operand 10 states. [2020-12-22 08:58:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:58:42,630 INFO L93 Difference]: Finished difference Result 127846 states and 191029 transitions. [2020-12-22 08:58:42,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:58:42,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 117 [2020-12-22 08:58:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:58:42,722 INFO L225 Difference]: With dead ends: 127846 [2020-12-22 08:58:42,722 INFO L226 Difference]: Without dead ends: 85696 [2020-12-22 08:58:42,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:58:42,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85696 states. [2020-12-22 08:58:51,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85696 to 42379. [2020-12-22 08:58:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42379 states. [2020-12-22 08:58:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42379 states to 42379 states and 63485 transitions. [2020-12-22 08:58:51,141 INFO L78 Accepts]: Start accepts. Automaton has 42379 states and 63485 transitions. Word has length 117 [2020-12-22 08:58:51,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:58:51,142 INFO L481 AbstractCegarLoop]: Abstraction has 42379 states and 63485 transitions. [2020-12-22 08:58:51,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:58:51,142 INFO L276 IsEmpty]: Start isEmpty. Operand 42379 states and 63485 transitions. [2020-12-22 08:58:51,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 08:58:51,147 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:58:51,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:58:51,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 08:58:51,148 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:58:51,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:58:51,148 INFO L82 PathProgramCache]: Analyzing trace with hash -674648634, now seen corresponding path program 1 times [2020-12-22 08:58:51,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:58:51,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745425671] [2020-12-22 08:58:51,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:58:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:58:51,426 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 08:58:51,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745425671] [2020-12-22 08:58:51,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:58:51,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:58:51,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21793681] [2020-12-22 08:58:51,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:58:51,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:58:51,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:58:51,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:58:51,429 INFO L87 Difference]: Start difference. First operand 42379 states and 63485 transitions. Second operand 10 states. [2020-12-22 08:58:51,669 WARN L197 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 23 [2020-12-22 08:59:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:59:05,674 INFO L93 Difference]: Finished difference Result 106178 states and 158752 transitions. [2020-12-22 08:59:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 08:59:05,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 118 [2020-12-22 08:59:05,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:59:05,742 INFO L225 Difference]: With dead ends: 106178 [2020-12-22 08:59:05,742 INFO L226 Difference]: Without dead ends: 64013 [2020-12-22 08:59:05,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2020-12-22 08:59:05,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64013 states. [2020-12-22 08:59:14,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64013 to 42379. [2020-12-22 08:59:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42379 states. [2020-12-22 08:59:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42379 states to 42379 states and 63482 transitions. [2020-12-22 08:59:14,473 INFO L78 Accepts]: Start accepts. Automaton has 42379 states and 63482 transitions. Word has length 118 [2020-12-22 08:59:14,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 08:59:14,473 INFO L481 AbstractCegarLoop]: Abstraction has 42379 states and 63482 transitions. [2020-12-22 08:59:14,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 08:59:14,473 INFO L276 IsEmpty]: Start isEmpty. Operand 42379 states and 63482 transitions. [2020-12-22 08:59:14,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-12-22 08:59:14,478 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 08:59:14,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 08:59:14,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 08:59:14,478 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 08:59:14,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 08:59:14,479 INFO L82 PathProgramCache]: Analyzing trace with hash 995910944, now seen corresponding path program 1 times [2020-12-22 08:59:14,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 08:59:14,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104548344] [2020-12-22 08:59:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 08:59:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 08:59:14,749 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 08:59:14,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104548344] [2020-12-22 08:59:14,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 08:59:14,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 08:59:14,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480451872] [2020-12-22 08:59:14,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 08:59:14,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 08:59:14,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 08:59:14,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 08:59:14,752 INFO L87 Difference]: Start difference. First operand 42379 states and 63482 transitions. Second operand 10 states. [2020-12-22 08:59:15,128 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 21 [2020-12-22 08:59:52,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 08:59:52,162 INFO L93 Difference]: Finished difference Result 204159 states and 303242 transitions. [2020-12-22 08:59:52,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-22 08:59:52,162 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 118 [2020-12-22 08:59:52,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 08:59:52,395 INFO L225 Difference]: With dead ends: 204159 [2020-12-22 08:59:52,395 INFO L226 Difference]: Without dead ends: 162333 [2020-12-22 08:59:52,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=409, Unknown=0, NotChecked=0, Total=552 [2020-12-22 08:59:52,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162333 states. [2020-12-22 09:00:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162333 to 42535. [2020-12-22 09:00:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42535 states. [2020-12-22 09:00:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42535 states to 42535 states and 63690 transitions. [2020-12-22 09:00:03,452 INFO L78 Accepts]: Start accepts. Automaton has 42535 states and 63690 transitions. Word has length 118 [2020-12-22 09:00:03,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:03,452 INFO L481 AbstractCegarLoop]: Abstraction has 42535 states and 63690 transitions. [2020-12-22 09:00:03,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 09:00:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 42535 states and 63690 transitions. [2020-12-22 09:00:03,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-12-22 09:00:03,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:03,457 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:03,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 09:00:03,458 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:03,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:03,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1974472565, now seen corresponding path program 1 times [2020-12-22 09:00:03,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:03,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485396091] [2020-12-22 09:00:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:03,727 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 09:00:03,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485396091] [2020-12-22 09:00:03,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:03,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 09:00:03,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227072056] [2020-12-22 09:00:03,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 09:00:03,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:03,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 09:00:03,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 09:00:03,730 INFO L87 Difference]: Start difference. First operand 42535 states and 63690 transitions. Second operand 9 states. [2020-12-22 09:00:19,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:19,723 INFO L93 Difference]: Finished difference Result 105470 states and 157944 transitions. [2020-12-22 09:00:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 09:00:19,723 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 119 [2020-12-22 09:00:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:19,788 INFO L225 Difference]: With dead ends: 105470 [2020-12-22 09:00:19,788 INFO L226 Difference]: Without dead ends: 63368 [2020-12-22 09:00:19,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-12-22 09:00:19,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63368 states. [2020-12-22 09:00:30,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63368 to 42310. [2020-12-22 09:00:30,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42310 states. [2020-12-22 09:00:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42310 states to 42310 states and 63360 transitions. [2020-12-22 09:00:30,460 INFO L78 Accepts]: Start accepts. Automaton has 42310 states and 63360 transitions. Word has length 119 [2020-12-22 09:00:30,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 09:00:30,460 INFO L481 AbstractCegarLoop]: Abstraction has 42310 states and 63360 transitions. [2020-12-22 09:00:30,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 09:00:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 42310 states and 63360 transitions. [2020-12-22 09:00:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-12-22 09:00:30,463 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 09:00:30,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 09:00:30,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 09:00:30,463 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 09:00:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 09:00:30,464 INFO L82 PathProgramCache]: Analyzing trace with hash -581165707, now seen corresponding path program 1 times [2020-12-22 09:00:30,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 09:00:30,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063049950] [2020-12-22 09:00:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 09:00:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 09:00:30,759 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 09:00:30,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063049950] [2020-12-22 09:00:30,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 09:00:30,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 09:00:30,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935320564] [2020-12-22 09:00:30,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 09:00:30,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 09:00:30,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 09:00:30,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-22 09:00:30,762 INFO L87 Difference]: Start difference. First operand 42310 states and 63360 transitions. Second operand 10 states. [2020-12-22 09:00:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 09:00:54,630 INFO L93 Difference]: Finished difference Result 127566 states and 190553 transitions. [2020-12-22 09:00:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-22 09:00:54,633 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 120 [2020-12-22 09:00:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 09:00:54,737 INFO L225 Difference]: With dead ends: 127566 [2020-12-22 09:00:54,738 INFO L226 Difference]: Without dead ends: 85585 [2020-12-22 09:00:54,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2020-12-22 09:00:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85585 states.