/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:23:35,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:23:35,471 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:23:35,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:23:35,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:23:35,495 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:23:35,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:23:35,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:23:35,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:23:35,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:23:35,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:23:35,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:23:35,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:23:35,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:23:35,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:23:35,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:23:35,507 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:23:35,508 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:23:35,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:23:35,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:23:35,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:23:35,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:23:35,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:23:35,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:23:35,518 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 04:23:35,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:23:35,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:23:35,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:23:35,528 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 04:23:35,570 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:23:35,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:23:35,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:23:35,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:23:35,575 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:23:35,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:23:35,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:23:35,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:23:35,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:23:35,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:23:35,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:23:35,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:23:35,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:23:35,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:23:35,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:23:35,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:23:35,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:23:35,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:23:35,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:23:35,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:23:35,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:23:35,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:23:35,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:23:35,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:23:35,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:23:35,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:23:35,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:23:35,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:23:35,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:23:35,582 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=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:23:35,904 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:23:35,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:23:35,926 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:23:35,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:23:35,928 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:23:35,928 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 04:23:36,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1eeb4ab84/6dd707835aff4a779dce0eb5859e0f87/FLAGca2abd975 [2020-08-19 04:23:36,477 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:23:36,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 04:23:36,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1eeb4ab84/6dd707835aff4a779dce0eb5859e0f87/FLAGca2abd975 [2020-08-19 04:23:36,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1eeb4ab84/6dd707835aff4a779dce0eb5859e0f87 [2020-08-19 04:23:36,916 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:23:36,918 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:23:36,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:36,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:23:36,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:23:36,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:36" (1/1) ... [2020-08-19 04:23:36,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24493d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:36, skipping insertion in model container [2020-08-19 04:23:36,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:23:36" (1/1) ... [2020-08-19 04:23:36,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:23:36,964 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:23:37,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:37,177 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:23:37,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:23:37,213 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:23:37,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37 WrapperNode [2020-08-19 04:23:37,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:23:37,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:23:37,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:23:37,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:23:37,307 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37" (1/1) ... [2020-08-19 04:23:37,307 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37" (1/1) ... [2020-08-19 04:23:37,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37" (1/1) ... [2020-08-19 04:23:37,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37" (1/1) ... [2020-08-19 04:23:37,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37" (1/1) ... [2020-08-19 04:23:37,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37" (1/1) ... [2020-08-19 04:23:37,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37" (1/1) ... [2020-08-19 04:23:37,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:23:37,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:23:37,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:23:37,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:23:37,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37" (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 04:23:37,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:23:37,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:23:37,408 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:23:37,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:23:37,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:23:37,409 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:23:37,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:23:37,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:23:37,633 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:23:37,634 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 04:23:37,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:37 BoogieIcfgContainer [2020-08-19 04:23:37,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:23:37,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:23:37,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:23:37,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:23:37,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:23:36" (1/3) ... [2020-08-19 04:23:37,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760fc32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:37, skipping insertion in model container [2020-08-19 04:23:37,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:23:37" (2/3) ... [2020-08-19 04:23:37,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760fc32d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:23:37, skipping insertion in model container [2020-08-19 04:23:37,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:23:37" (3/3) ... [2020-08-19 04:23:37,647 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-08-19 04:23:37,657 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:23:37,667 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:23:37,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:23:37,718 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:23:37,718 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:23:37,718 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:23:37,719 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:23:37,719 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:23:37,719 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:23:37,719 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:23:37,720 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:23:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-19 04:23:37,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 04:23:37,751 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:37,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:37,752 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:37,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:37,760 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-08-19 04:23:37,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:37,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707145054] [2020-08-19 04:23:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:37,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:37,962 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 04:23:37,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707145054] [2020-08-19 04:23:37,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:37,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:37,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651449019] [2020-08-19 04:23:37,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:37,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:37,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:37,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:37,983 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-08-19 04:23:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,040 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-08-19 04:23:38,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,042 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 04:23:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,053 INFO L225 Difference]: With dead ends: 57 [2020-08-19 04:23:38,054 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 04:23:38,057 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 04:23:38,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 04:23:38,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-08-19 04:23:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 04:23:38,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-08-19 04:23:38,097 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-08-19 04:23:38,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,098 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-08-19 04:23:38,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,098 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-08-19 04:23:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 04:23:38,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:38,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:23:38,101 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,101 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-08-19 04:23:38,102 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,102 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468257338] [2020-08-19 04:23:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,161 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 04:23:38,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468257338] [2020-08-19 04:23:38,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:38,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35158282] [2020-08-19 04:23:38,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:38,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:38,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:38,165 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-08-19 04:23:38,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,190 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-08-19 04:23:38,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 04:23:38,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,193 INFO L225 Difference]: With dead ends: 67 [2020-08-19 04:23:38,193 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 04:23:38,197 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 04:23:38,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 04:23:38,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-08-19 04:23:38,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-19 04:23:38,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-08-19 04:23:38,206 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-08-19 04:23:38,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,207 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-08-19 04:23:38,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,207 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-08-19 04:23:38,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 04:23:38,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:38,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:23:38,209 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-08-19 04:23:38,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25679691] [2020-08-19 04:23:38,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,255 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 04:23:38,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25679691] [2020-08-19 04:23:38,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:38,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449369466] [2020-08-19 04:23:38,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:38,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:38,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:38,258 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-08-19 04:23:38,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,279 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-08-19 04:23:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 04:23:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,282 INFO L225 Difference]: With dead ends: 63 [2020-08-19 04:23:38,282 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 04:23:38,283 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 04:23:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 04:23:38,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-08-19 04:23:38,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 04:23:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-08-19 04:23:38,291 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-08-19 04:23:38,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,292 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-08-19 04:23:38,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,292 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-08-19 04:23:38,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 04:23:38,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:38,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:23:38,299 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-08-19 04:23:38,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976388078] [2020-08-19 04:23:38,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,375 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 04:23:38,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976388078] [2020-08-19 04:23:38,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:38,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506464720] [2020-08-19 04:23:38,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:38,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:38,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:38,378 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-08-19 04:23:38,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,402 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-08-19 04:23:38,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 04:23:38,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,405 INFO L225 Difference]: With dead ends: 76 [2020-08-19 04:23:38,405 INFO L226 Difference]: Without dead ends: 74 [2020-08-19 04:23:38,406 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 04:23:38,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-19 04:23:38,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-08-19 04:23:38,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 04:23:38,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-08-19 04:23:38,418 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-08-19 04:23:38,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,418 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-08-19 04:23:38,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,419 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-08-19 04:23:38,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 04:23:38,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:23:38,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:23:38,421 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-08-19 04:23:38,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004453413] [2020-08-19 04:23:38,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,492 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 04:23:38,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004453413] [2020-08-19 04:23:38,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:38,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463600453] [2020-08-19 04:23:38,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:38,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:38,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:38,498 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-08-19 04:23:38,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,537 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-08-19 04:23:38,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,538 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 04:23:38,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,539 INFO L225 Difference]: With dead ends: 124 [2020-08-19 04:23:38,539 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 04:23:38,540 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 04:23:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 04:23:38,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-08-19 04:23:38,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-08-19 04:23:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-08-19 04:23:38,552 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-08-19 04:23:38,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,552 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-08-19 04:23:38,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-08-19 04:23:38,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 04:23:38,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,554 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 04:23:38,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:23:38,554 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-08-19 04:23:38,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321507397] [2020-08-19 04:23:38,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,585 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 04:23:38,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321507397] [2020-08-19 04:23:38,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,586 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:38,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431899200] [2020-08-19 04:23:38,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:38,587 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:38,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:38,588 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-08-19 04:23:38,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,614 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-08-19 04:23:38,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 04:23:38,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,616 INFO L225 Difference]: With dead ends: 111 [2020-08-19 04:23:38,616 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 04:23:38,617 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 04:23:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 04:23:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-08-19 04:23:38,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 04:23:38,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-08-19 04:23:38,628 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-08-19 04:23:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,629 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-08-19 04:23:38,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-08-19 04:23:38,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 04:23:38,630 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,631 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 04:23:38,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:23:38,631 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,632 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-08-19 04:23:38,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198852629] [2020-08-19 04:23:38,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,664 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 04:23:38,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198852629] [2020-08-19 04:23:38,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:38,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707397299] [2020-08-19 04:23:38,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:38,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:38,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:38,667 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-08-19 04:23:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,693 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-08-19 04:23:38,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 04:23:38,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,696 INFO L225 Difference]: With dead ends: 132 [2020-08-19 04:23:38,696 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 04:23:38,697 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 04:23:38,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 04:23:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-08-19 04:23:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-19 04:23:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-08-19 04:23:38,715 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-08-19 04:23:38,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,716 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-08-19 04:23:38,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,716 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-08-19 04:23:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 04:23:38,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,718 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 04:23:38,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:23:38,718 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-08-19 04:23:38,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544849827] [2020-08-19 04:23:38,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,745 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 04:23:38,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544849827] [2020-08-19 04:23:38,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:38,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656051817] [2020-08-19 04:23:38,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:38,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:38,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:38,748 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-08-19 04:23:38,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,770 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-08-19 04:23:38,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 04:23:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,772 INFO L225 Difference]: With dead ends: 232 [2020-08-19 04:23:38,773 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 04:23:38,774 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 04:23:38,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 04:23:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-08-19 04:23:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-19 04:23:38,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-08-19 04:23:38,788 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-08-19 04:23:38,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,789 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-08-19 04:23:38,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,789 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-08-19 04:23:38,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 04:23:38,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,791 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 04:23:38,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:23:38,791 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-08-19 04:23:38,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484802819] [2020-08-19 04:23:38,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,851 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 04:23:38,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484802819] [2020-08-19 04:23:38,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:38,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340266526] [2020-08-19 04:23:38,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:38,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:38,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:38,856 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-08-19 04:23:38,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,880 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-08-19 04:23:38,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 04:23:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,882 INFO L225 Difference]: With dead ends: 204 [2020-08-19 04:23:38,882 INFO L226 Difference]: Without dead ends: 142 [2020-08-19 04:23:38,883 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 04:23:38,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-19 04:23:38,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-08-19 04:23:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 04:23:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-08-19 04:23:38,894 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-08-19 04:23:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,894 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-08-19 04:23:38,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,895 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-08-19 04:23:38,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 04:23:38,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,896 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 04:23:38,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:23:38,897 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-08-19 04:23:38,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348623571] [2020-08-19 04:23:38,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:38,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:38,920 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 04:23:38,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348623571] [2020-08-19 04:23:38,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:38,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:38,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084011569] [2020-08-19 04:23:38,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:38,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:38,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:38,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:38,922 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-08-19 04:23:38,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:38,941 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-08-19 04:23:38,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:38,942 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 04:23:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:38,944 INFO L225 Difference]: With dead ends: 236 [2020-08-19 04:23:38,944 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 04:23:38,945 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 04:23:38,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 04:23:38,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-08-19 04:23:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-08-19 04:23:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-08-19 04:23:38,963 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-08-19 04:23:38,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:38,964 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-08-19 04:23:38,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-08-19 04:23:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 04:23:38,966 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:38,966 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 04:23:38,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:23:38,967 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:38,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:38,967 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-08-19 04:23:38,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:38,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729280172] [2020-08-19 04:23:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,033 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 04:23:39,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729280172] [2020-08-19 04:23:39,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980796399] [2020-08-19 04:23:39,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,037 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-08-19 04:23:39,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,084 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-08-19 04:23:39,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 04:23:39,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,088 INFO L225 Difference]: With dead ends: 444 [2020-08-19 04:23:39,088 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 04:23:39,093 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 04:23:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 04:23:39,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-08-19 04:23:39,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-08-19 04:23:39,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-08-19 04:23:39,122 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-08-19 04:23:39,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,126 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-08-19 04:23:39,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,126 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-08-19 04:23:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:23:39,130 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,130 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 04:23:39,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:23:39,131 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,131 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-08-19 04:23:39,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199022501] [2020-08-19 04:23:39,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,155 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 04:23:39,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199022501] [2020-08-19 04:23:39,156 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96208177] [2020-08-19 04:23:39,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,158 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-08-19 04:23:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,174 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-08-19 04:23:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 04:23:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,176 INFO L225 Difference]: With dead ends: 384 [2020-08-19 04:23:39,177 INFO L226 Difference]: Without dead ends: 266 [2020-08-19 04:23:39,178 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 04:23:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-19 04:23:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-08-19 04:23:39,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-19 04:23:39,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-08-19 04:23:39,191 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-08-19 04:23:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,191 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-08-19 04:23:39,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,192 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-08-19 04:23:39,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:23:39,194 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,194 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 04:23:39,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 04:23:39,194 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,195 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-08-19 04:23:39,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972594732] [2020-08-19 04:23:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,255 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 04:23:39,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972594732] [2020-08-19 04:23:39,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709035442] [2020-08-19 04:23:39,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,262 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-08-19 04:23:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,295 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-08-19 04:23:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 04:23:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,301 INFO L225 Difference]: With dead ends: 426 [2020-08-19 04:23:39,301 INFO L226 Difference]: Without dead ends: 424 [2020-08-19 04:23:39,302 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 04:23:39,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-19 04:23:39,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-08-19 04:23:39,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-08-19 04:23:39,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-08-19 04:23:39,318 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-08-19 04:23:39,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,319 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-08-19 04:23:39,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,319 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-08-19 04:23:39,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 04:23:39,320 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:23:39,320 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 04:23:39,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 04:23:39,321 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:23:39,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:23:39,321 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-08-19 04:23:39,321 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:23:39,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408347986] [2020-08-19 04:23:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:23:39,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:23:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:23:39,372 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 04:23:39,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408347986] [2020-08-19 04:23:39,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:23:39,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 04:23:39,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882806398] [2020-08-19 04:23:39,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 04:23:39,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:23:39,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 04:23:39,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 04:23:39,375 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-08-19 04:23:39,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:23:39,402 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-08-19 04:23:39,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 04:23:39,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 04:23:39,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:23:39,403 INFO L225 Difference]: With dead ends: 856 [2020-08-19 04:23:39,404 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:23:39,407 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 04:23:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:23:39,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:23:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:23:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:23:39,409 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-08-19 04:23:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:23:39,409 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:23:39,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 04:23:39,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:23:39,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:23:39,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 04:23:39,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:23:39,443 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 04:23:39,443 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:23:39,444 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 04:23:39,445 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 04:23:39,445 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 04:23:39,445 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 04:23:39,446 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-08-19 04:23:39,446 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-08-19 04:23:39,446 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-08-19 04:23:39,446 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 04:23:39,446 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-08-19 04:23:39,446 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 04:23:39,446 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 04:23:39,447 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 04:23:39,447 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 04:23:39,447 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 04:23:39,447 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-08-19 04:23:39,447 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-08-19 04:23:39,447 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-08-19 04:23:39,447 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-08-19 04:23:39,447 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-08-19 04:23:39,448 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-08-19 04:23:39,448 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-08-19 04:23:39,448 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 04:23:39,448 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-08-19 04:23:39,448 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-19 04:23:39,448 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-08-19 04:23:39,448 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-08-19 04:23:39,449 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 04:23:39,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 04:23:39 BoogieIcfgContainer [2020-08-19 04:23:39,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 04:23:39,469 INFO L168 Benchmark]: Toolchain (without parser) took 2550.75 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 101.9 MB in the beginning and 144.1 MB in the end (delta: -42.2 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:39,470 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 04:23:39,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.51 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 91.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:39,471 INFO L168 Benchmark]: Boogie Preprocessor took 119.01 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.6 MB in the beginning and 179.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:39,472 INFO L168 Benchmark]: RCFGBuilder took 304.49 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.0 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:39,473 INFO L168 Benchmark]: TraceAbstraction took 1826.53 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 164.4 MB in the beginning and 144.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-08-19 04:23:39,476 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.51 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 91.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.01 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.6 MB in the beginning and 179.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 304.49 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.0 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1826.53 ms. Allocated memory was 201.9 MB in the beginning and 235.4 MB in the end (delta: 33.6 MB). Free memory was 164.4 MB in the beginning and 144.1 MB in the end (delta: 20.3 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.6s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...