/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:09:21,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:09:21,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:09:21,498 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:09:21,498 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:09:21,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:09:21,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:09:21,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:09:21,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:09:21,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:09:21,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:09:21,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:09:21,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:09:21,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:09:21,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:09:21,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:09:21,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:09:21,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:09:21,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:09:21,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:09:21,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:09:21,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:09:21,521 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:09:21,522 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:09:21,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:09:21,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:09:21,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:09:21,538 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:09:21,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:09:21,563 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:09:21,563 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:09:21,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:09:21,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:09:21,565 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:09:21,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:09:21,565 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:09:21,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:09:21,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:09:21,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:09:21,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:09:21,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:09:21,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:09:21,567 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:09:21,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:09:21,567 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:09:21,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:09:21,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:09:21,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:09:21,568 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:09:21,568 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:09:21,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:09:21,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:09:21,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:09:21,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:09:21,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:09:21,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:09:21,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:09:21,570 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:09:21,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:09:21,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:09:21,922 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:09:21,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:09:21,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:09:21,931 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:09:21,932 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-08-19 01:09:22,010 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b771007f/11985db4679048ef982afb6bfb9de9c4/FLAGa987bf189 [2020-08-19 01:09:22,528 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:09:22,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-08-19 01:09:22,540 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b771007f/11985db4679048ef982afb6bfb9de9c4/FLAGa987bf189 [2020-08-19 01:09:22,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9b771007f/11985db4679048ef982afb6bfb9de9c4 [2020-08-19 01:09:22,875 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:09:22,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:09:22,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:22,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:09:22,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:09:22,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:22" (1/1) ... [2020-08-19 01:09:22,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d8d2ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:22, skipping insertion in model container [2020-08-19 01:09:22,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:22" (1/1) ... [2020-08-19 01:09:22,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:09:22,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:09:23,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:23,125 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:09:23,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:23,159 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:09:23,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23 WrapperNode [2020-08-19 01:09:23,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:23,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:09:23,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:09:23,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:09:23,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23" (1/1) ... [2020-08-19 01:09:23,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23" (1/1) ... [2020-08-19 01:09:23,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23" (1/1) ... [2020-08-19 01:09:23,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23" (1/1) ... [2020-08-19 01:09:23,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23" (1/1) ... [2020-08-19 01:09:23,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23" (1/1) ... [2020-08-19 01:09:23,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23" (1/1) ... [2020-08-19 01:09:23,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:09:23,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:09:23,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:09:23,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:09:23,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 01:09:23,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:09:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:09:23,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:09:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:09:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:09:23,337 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:09:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:09:23,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:09:23,627 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:09:23,628 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 01:09:23,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:23 BoogieIcfgContainer [2020-08-19 01:09:23,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:09:23,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:09:23,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:09:23,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:09:23,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:09:22" (1/3) ... [2020-08-19 01:09:23,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e1bdb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:23, skipping insertion in model container [2020-08-19 01:09:23,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:23" (2/3) ... [2020-08-19 01:09:23,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39e1bdb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:23, skipping insertion in model container [2020-08-19 01:09:23,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:23" (3/3) ... [2020-08-19 01:09:23,643 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-08-19 01:09:23,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:09:23,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:09:23,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:09:23,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:09:23,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:09:23,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:09:23,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:09:23,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:09:23,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:09:23,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:09:23,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:09:23,735 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-19 01:09:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:09:23,743 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:23,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:23,745 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:23,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:23,752 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-08-19 01:09:23,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:23,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470363038] [2020-08-19 01:09:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:23,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:23,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470363038] [2020-08-19 01:09:23,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:23,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:23,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613692014] [2020-08-19 01:09:23,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:23,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:23,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:23,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:23,983 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-19 01:09:24,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,048 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-08-19 01:09:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:24,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:09:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,063 INFO L225 Difference]: With dead ends: 63 [2020-08-19 01:09:24,063 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 01:09:24,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 01:09:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-08-19 01:09:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-19 01:09:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-08-19 01:09:24,116 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-08-19 01:09:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,116 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-08-19 01:09:24,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-08-19 01:09:24,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:09:24,119 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,119 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:09:24,120 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-08-19 01:09:24,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977838476] [2020-08-19 01:09:24,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:24,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977838476] [2020-08-19 01:09:24,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:24,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423921857] [2020-08-19 01:09:24,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:24,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:24,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,221 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-08-19 01:09:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,282 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-08-19 01:09:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:24,283 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:09:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,284 INFO L225 Difference]: With dead ends: 77 [2020-08-19 01:09:24,285 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 01:09:24,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 01:09:24,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-08-19 01:09:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-19 01:09:24,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-08-19 01:09:24,296 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-08-19 01:09:24,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,296 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-08-19 01:09:24,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:24,297 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-08-19 01:09:24,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:09:24,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:09:24,303 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,303 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-08-19 01:09:24,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616258730] [2020-08-19 01:09:24,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:24,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616258730] [2020-08-19 01:09:24,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:24,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480523366] [2020-08-19 01:09:24,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:24,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:24,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,362 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-08-19 01:09:24,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,384 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-08-19 01:09:24,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:24,385 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:09:24,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,387 INFO L225 Difference]: With dead ends: 72 [2020-08-19 01:09:24,388 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 01:09:24,388 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 01:09:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-08-19 01:09:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-19 01:09:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-08-19 01:09:24,408 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-08-19 01:09:24,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,410 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-08-19 01:09:24,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-08-19 01:09:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:09:24,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:09:24,414 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,415 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-08-19 01:09:24,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640541741] [2020-08-19 01:09:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:24,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640541741] [2020-08-19 01:09:24,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:24,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997788525] [2020-08-19 01:09:24,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:24,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:24,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,495 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-08-19 01:09:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,517 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-08-19 01:09:24,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:24,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:09:24,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,522 INFO L225 Difference]: With dead ends: 88 [2020-08-19 01:09:24,522 INFO L226 Difference]: Without dead ends: 86 [2020-08-19 01:09:24,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-19 01:09:24,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-08-19 01:09:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-19 01:09:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-08-19 01:09:24,535 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-08-19 01:09:24,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,535 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-08-19 01:09:24,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:24,536 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-08-19 01:09:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:09:24,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,537 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:09:24,538 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,538 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-08-19 01:09:24,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1984911127] [2020-08-19 01:09:24,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:24,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1984911127] [2020-08-19 01:09:24,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:24,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634827815] [2020-08-19 01:09:24,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:24,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:24,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,576 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-08-19 01:09:24,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,598 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-08-19 01:09:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:24,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:09:24,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,601 INFO L225 Difference]: With dead ends: 144 [2020-08-19 01:09:24,601 INFO L226 Difference]: Without dead ends: 88 [2020-08-19 01:09:24,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-19 01:09:24,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-08-19 01:09:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-19 01:09:24,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-08-19 01:09:24,613 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-08-19 01:09:24,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,613 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-08-19 01:09:24,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:24,614 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-08-19 01:09:24,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:09:24,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:09:24,616 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-08-19 01:09:24,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052286838] [2020-08-19 01:09:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:24,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052286838] [2020-08-19 01:09:24,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:24,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917858256] [2020-08-19 01:09:24,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:24,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:24,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,655 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-08-19 01:09:24,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,675 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-08-19 01:09:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:24,675 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:09:24,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,677 INFO L225 Difference]: With dead ends: 129 [2020-08-19 01:09:24,677 INFO L226 Difference]: Without dead ends: 90 [2020-08-19 01:09:24,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-19 01:09:24,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-08-19 01:09:24,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-19 01:09:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-08-19 01:09:24,690 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-08-19 01:09:24,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,690 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-08-19 01:09:24,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:24,691 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-08-19 01:09:24,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:09:24,692 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:09:24,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,693 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-08-19 01:09:24,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1415906959] [2020-08-19 01:09:24,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:24,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1415906959] [2020-08-19 01:09:24,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:24,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720574307] [2020-08-19 01:09:24,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:24,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:24,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,738 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-08-19 01:09:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,762 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-08-19 01:09:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:24,763 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:09:24,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,766 INFO L225 Difference]: With dead ends: 156 [2020-08-19 01:09:24,766 INFO L226 Difference]: Without dead ends: 154 [2020-08-19 01:09:24,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-19 01:09:24,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-08-19 01:09:24,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 01:09:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-08-19 01:09:24,782 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-08-19 01:09:24,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,783 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-08-19 01:09:24,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:24,783 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-08-19 01:09:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:09:24,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,785 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:09:24,786 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-08-19 01:09:24,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226461635] [2020-08-19 01:09:24,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:24,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226461635] [2020-08-19 01:09:24,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:24,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440801189] [2020-08-19 01:09:24,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:24,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:24,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,824 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-08-19 01:09:24,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,848 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-08-19 01:09:24,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:24,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:09:24,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,850 INFO L225 Difference]: With dead ends: 272 [2020-08-19 01:09:24,851 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 01:09:24,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 01:09:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-08-19 01:09:24,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-19 01:09:24,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-08-19 01:09:24,889 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-08-19 01:09:24,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:24,890 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-08-19 01:09:24,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-08-19 01:09:24,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:09:24,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:24,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:24,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:09:24,895 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:24,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-08-19 01:09:24,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:24,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463151137] [2020-08-19 01:09:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:24,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:24,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:24,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463151137] [2020-08-19 01:09:24,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:24,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:24,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121143419] [2020-08-19 01:09:24,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:24,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:24,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:24,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,953 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-08-19 01:09:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:24,992 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-08-19 01:09:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:24,992 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:09:24,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:24,995 INFO L225 Difference]: With dead ends: 240 [2020-08-19 01:09:24,996 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 01:09:24,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 01:09:25,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-08-19 01:09:25,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-19 01:09:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-08-19 01:09:25,031 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-08-19 01:09:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,032 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-08-19 01:09:25,032 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-08-19 01:09:25,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:09:25,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:25,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:09:25,039 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-08-19 01:09:25,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062209693] [2020-08-19 01:09:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:25,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062209693] [2020-08-19 01:09:25,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:25,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988790229] [2020-08-19 01:09:25,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:25,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:25,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,106 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-08-19 01:09:25,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,142 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-08-19 01:09:25,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:25,145 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:09:25,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,147 INFO L225 Difference]: With dead ends: 284 [2020-08-19 01:09:25,147 INFO L226 Difference]: Without dead ends: 282 [2020-08-19 01:09:25,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-19 01:09:25,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-08-19 01:09:25,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-19 01:09:25,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-08-19 01:09:25,173 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-08-19 01:09:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,174 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-08-19 01:09:25,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:25,174 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-08-19 01:09:25,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:09:25,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:25,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:09:25,181 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,181 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-08-19 01:09:25,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172696127] [2020-08-19 01:09:25,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:25,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172696127] [2020-08-19 01:09:25,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:25,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662895536] [2020-08-19 01:09:25,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:25,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:25,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,234 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-08-19 01:09:25,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,269 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-08-19 01:09:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:25,270 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:09:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,272 INFO L225 Difference]: With dead ends: 524 [2020-08-19 01:09:25,272 INFO L226 Difference]: Without dead ends: 306 [2020-08-19 01:09:25,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-19 01:09:25,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-08-19 01:09:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 01:09:25,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-08-19 01:09:25,286 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-08-19 01:09:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,287 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-08-19 01:09:25,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-08-19 01:09:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:09:25,288 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,289 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] [2020-08-19 01:09:25,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:09:25,289 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,289 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-08-19 01:09:25,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273646433] [2020-08-19 01:09:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:25,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273646433] [2020-08-19 01:09:25,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:25,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042952569] [2020-08-19 01:09:25,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:25,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:25,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,314 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-08-19 01:09:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,335 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-08-19 01:09:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:25,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 01:09:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,338 INFO L225 Difference]: With dead ends: 456 [2020-08-19 01:09:25,338 INFO L226 Difference]: Without dead ends: 314 [2020-08-19 01:09:25,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-19 01:09:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-08-19 01:09:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-19 01:09:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-08-19 01:09:25,355 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-08-19 01:09:25,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,356 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-08-19 01:09:25,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-08-19 01:09:25,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:09:25,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,359 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] [2020-08-19 01:09:25,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:09:25,365 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,365 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-08-19 01:09:25,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31371305] [2020-08-19 01:09:25,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:25,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31371305] [2020-08-19 01:09:25,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:25,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884484681] [2020-08-19 01:09:25,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:25,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:25,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,411 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-08-19 01:09:25,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,433 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-08-19 01:09:25,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:25,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 01:09:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,438 INFO L225 Difference]: With dead ends: 524 [2020-08-19 01:09:25,438 INFO L226 Difference]: Without dead ends: 522 [2020-08-19 01:09:25,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-19 01:09:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-08-19 01:09:25,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-08-19 01:09:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-08-19 01:09:25,455 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-08-19 01:09:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,456 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-08-19 01:09:25,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-08-19 01:09:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 01:09:25,460 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,460 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] [2020-08-19 01:09:25,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:09:25,461 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-08-19 01:09:25,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841256213] [2020-08-19 01:09:25,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:25,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841256213] [2020-08-19 01:09:25,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:25,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238153016] [2020-08-19 01:09:25,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:25,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:25,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,491 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-08-19 01:09:25,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,521 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-08-19 01:09:25,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:25,522 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 01:09:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,525 INFO L225 Difference]: With dead ends: 1020 [2020-08-19 01:09:25,525 INFO L226 Difference]: Without dead ends: 586 [2020-08-19 01:09:25,527 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-19 01:09:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-08-19 01:09:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-08-19 01:09:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-08-19 01:09:25,546 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-08-19 01:09:25,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,547 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-08-19 01:09:25,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-08-19 01:09:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 01:09:25,548 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,549 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] [2020-08-19 01:09:25,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:09:25,549 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,550 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-08-19 01:09:25,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917147090] [2020-08-19 01:09:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:25,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917147090] [2020-08-19 01:09:25,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:25,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196606959] [2020-08-19 01:09:25,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:25,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:25,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,575 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-08-19 01:09:25,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,597 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-08-19 01:09:25,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:25,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 01:09:25,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,601 INFO L225 Difference]: With dead ends: 876 [2020-08-19 01:09:25,601 INFO L226 Difference]: Without dead ends: 602 [2020-08-19 01:09:25,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-08-19 01:09:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-08-19 01:09:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-19 01:09:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-08-19 01:09:25,622 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-08-19 01:09:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,622 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-08-19 01:09:25,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:25,623 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-08-19 01:09:25,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 01:09:25,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,624 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] [2020-08-19 01:09:25,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 01:09:25,624 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,625 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-08-19 01:09:25,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85266143] [2020-08-19 01:09:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:25,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85266143] [2020-08-19 01:09:25,650 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:25,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975179173] [2020-08-19 01:09:25,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:25,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:25,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,652 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-08-19 01:09:25,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,692 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-08-19 01:09:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:25,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 01:09:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,698 INFO L225 Difference]: With dead ends: 970 [2020-08-19 01:09:25,698 INFO L226 Difference]: Without dead ends: 968 [2020-08-19 01:09:25,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-08-19 01:09:25,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-08-19 01:09:25,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-08-19 01:09:25,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-08-19 01:09:25,733 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-08-19 01:09:25,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,733 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-08-19 01:09:25,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:25,734 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-08-19 01:09:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 01:09:25,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:25,736 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] [2020-08-19 01:09:25,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 01:09:25,736 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:25,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:25,737 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-08-19 01:09:25,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:25,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481602092] [2020-08-19 01:09:25,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:25,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481602092] [2020-08-19 01:09:25,774 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:25,774 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:25,775 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138143983] [2020-08-19 01:09:25,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:25,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:25,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:25,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,777 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-08-19 01:09:25,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:25,818 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-08-19 01:09:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:25,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 01:09:25,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:25,819 INFO L225 Difference]: With dead ends: 1992 [2020-08-19 01:09:25,819 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:09:25,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:09:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:09:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:09:25,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:09:25,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-19 01:09:25,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:25,825 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:09:25,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:25,825 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:09:25,825 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:09:25,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 01:09:25,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:09:25,852 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 01:09:25,853 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:09:25,853 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:09:25,853 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 01:09:25,853 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 01:09:25,853 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:09:25,854 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-08-19 01:09:25,854 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-08-19 01:09:25,854 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,854 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-08-19 01:09:25,854 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-08-19 01:09:25,854 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-08-19 01:09:25,854 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,855 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,855 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,855 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-08-19 01:09:25,855 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-08-19 01:09:25,855 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,855 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-08-19 01:09:25,856 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-08-19 01:09:25,856 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-08-19 01:09:25,857 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,857 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-08-19 01:09:25,857 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-08-19 01:09:25,865 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-08-19 01:09:25,865 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-08-19 01:09:25,865 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,866 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,866 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,866 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-19 01:09:25,866 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,866 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 01:09:25,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:09:25 BoogieIcfgContainer [2020-08-19 01:09:25,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:09:25,881 INFO L168 Benchmark]: Toolchain (without parser) took 3003.32 ms. Allocated memory was 138.9 MB in the beginning and 247.5 MB in the end (delta: 108.5 MB). Free memory was 100.8 MB in the beginning and 219.6 MB in the end (delta: -118.8 MB). Peak memory consumption was 115.7 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:25,881 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:09:25,882 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.70 ms. Allocated memory is still 138.9 MB. Free memory was 100.6 MB in the beginning and 90.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:25,883 INFO L168 Benchmark]: Boogie Preprocessor took 111.54 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 90.1 MB in the beginning and 178.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:25,884 INFO L168 Benchmark]: RCFGBuilder took 361.61 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 162.9 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:25,884 INFO L168 Benchmark]: TraceAbstraction took 2242.39 ms. Allocated memory was 200.8 MB in the beginning and 247.5 MB in the end (delta: 46.7 MB). Free memory was 162.2 MB in the beginning and 219.6 MB in the end (delta: -57.4 MB). Peak memory consumption was 115.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:25,888 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.70 ms. Allocated memory is still 138.9 MB. Free memory was 100.6 MB in the beginning and 90.1 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.54 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 90.1 MB in the beginning and 178.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.61 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 162.9 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2242.39 ms. Allocated memory was 200.8 MB in the beginning and 247.5 MB in the end (delta: 46.7 MB). Free memory was 162.2 MB in the beginning and 219.6 MB in the end (delta: -57.4 MB). Peak memory consumption was 115.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.1s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 417 SDslu, 612 SDs, 0 SdLazy, 91 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 270 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 74 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 9690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...