/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:09:19,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:09:19,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:09:19,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:09:19,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:09:19,653 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:09:19,655 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:09:19,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:09:19,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:09:19,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:09:19,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:09:19,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:09:19,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:09:19,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:09:19,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:09:19,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:09:19,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:09:19,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:09:19,682 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:09:19,685 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:09:19,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:09:19,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:09:19,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:09:19,696 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:09:19,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:09:19,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:09:19,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:09:19,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:09:19,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 01:09:19,735 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:09:19,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:09:19,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:09:19,737 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:09:19,737 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:09:19,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:09:19,737 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:09:19,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:09:19,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:09:19,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:09:19,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:09:19,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:09:19,739 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:09:19,739 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:09:19,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:09:19,739 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:09:19,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:09:19,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:09:19,740 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:09:19,740 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:09:19,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:09:19,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:09:19,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:09:19,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:09:19,741 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:09:19,741 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:09:19,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:09:19,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:09:19,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:09:19,742 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 01:09:20,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:09:20,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:09:20,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:09:20,062 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:09:20,065 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:09:20,066 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 01:09:20,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39d0d6363/b5373d2045b3429e8d7ff34a71f49b4f/FLAG9523d74ff [2020-08-19 01:09:20,593 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:09:20,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 01:09:20,604 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39d0d6363/b5373d2045b3429e8d7ff34a71f49b4f/FLAG9523d74ff [2020-08-19 01:09:20,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39d0d6363/b5373d2045b3429e8d7ff34a71f49b4f [2020-08-19 01:09:20,933 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:09:20,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:09:20,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:20,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:09:20,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:09:20,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:20" (1/1) ... [2020-08-19 01:09:20,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb9d797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:20, skipping insertion in model container [2020-08-19 01:09:20,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:09:20" (1/1) ... [2020-08-19 01:09:20,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:09:20,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:09:21,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:21,231 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:09:21,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:09:21,264 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:09:21,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21 WrapperNode [2020-08-19 01:09:21,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:09:21,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:09:21,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:09:21,265 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:09:21,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21" (1/1) ... [2020-08-19 01:09:21,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21" (1/1) ... [2020-08-19 01:09:21,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21" (1/1) ... [2020-08-19 01:09:21,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21" (1/1) ... [2020-08-19 01:09:21,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21" (1/1) ... [2020-08-19 01:09:21,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21" (1/1) ... [2020-08-19 01:09:21,390 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21" (1/1) ... [2020-08-19 01:09:21,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:09:21,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:09:21,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:09:21,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:09:21,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:09:21,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:09:21,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:09:21,468 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:09:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:09:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:09:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:09:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:09:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:09:21,684 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:09:21,684 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 01:09:21,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:21 BoogieIcfgContainer [2020-08-19 01:09:21,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:09:21,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:09:21,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:09:21,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:09:21,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:09:20" (1/3) ... [2020-08-19 01:09:21,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79860f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:21, skipping insertion in model container [2020-08-19 01:09:21,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:09:21" (2/3) ... [2020-08-19 01:09:21,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79860f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:09:21, skipping insertion in model container [2020-08-19 01:09:21,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:09:21" (3/3) ... [2020-08-19 01:09:21,697 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-08-19 01:09:21,709 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:09:21,717 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:09:21,748 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:09:21,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:09:21,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:09:21,801 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:09:21,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:09:21,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:09:21,805 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:09:21,805 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:09:21,805 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:09:21,852 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-19 01:09:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 01:09:21,860 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:21,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:21,862 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:21,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:21,868 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-08-19 01:09:21,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:21,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144727693] [2020-08-19 01:09:21,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:21,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144727693] [2020-08-19 01:09:22,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391927972] [2020-08-19 01:09:22,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,085 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-08-19 01:09:22,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,131 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-08-19 01:09:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,133 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 01:09:22,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,147 INFO L225 Difference]: With dead ends: 57 [2020-08-19 01:09:22,147 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 01:09:22,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 01:09:22,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-08-19 01:09:22,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 01:09:22,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-08-19 01:09:22,195 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-08-19 01:09:22,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,195 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-08-19 01:09:22,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-08-19 01:09:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 01:09:22,197 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,198 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:09:22,198 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,198 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-08-19 01:09:22,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,199 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137627693] [2020-08-19 01:09:22,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137627693] [2020-08-19 01:09:22,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001798254] [2020-08-19 01:09:22,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,256 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-08-19 01:09:22,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,295 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-08-19 01:09:22,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,295 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 01:09:22,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,297 INFO L225 Difference]: With dead ends: 67 [2020-08-19 01:09:22,297 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 01:09:22,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 01:09:22,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-08-19 01:09:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-19 01:09:22,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-08-19 01:09:22,307 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-08-19 01:09:22,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,307 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-08-19 01:09:22,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-08-19 01:09:22,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:09:22,309 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:09:22,309 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-08-19 01:09:22,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,311 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [837396267] [2020-08-19 01:09:22,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [837396267] [2020-08-19 01:09:22,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252795511] [2020-08-19 01:09:22,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,357 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-08-19 01:09:22,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,377 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-08-19 01:09:22,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,378 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:09:22,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,380 INFO L225 Difference]: With dead ends: 63 [2020-08-19 01:09:22,380 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 01:09:22,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 01:09:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-08-19 01:09:22,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 01:09:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-08-19 01:09:22,389 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-08-19 01:09:22,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,389 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-08-19 01:09:22,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,391 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-08-19 01:09:22,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:09:22,392 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:09:22,394 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-08-19 01:09:22,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [961251970] [2020-08-19 01:09:22,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [961251970] [2020-08-19 01:09:22,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408899057] [2020-08-19 01:09:22,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,464 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-08-19 01:09:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,482 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-08-19 01:09:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:09:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,484 INFO L225 Difference]: With dead ends: 76 [2020-08-19 01:09:22,484 INFO L226 Difference]: Without dead ends: 74 [2020-08-19 01:09:22,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-19 01:09:22,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-08-19 01:09:22,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 01:09:22,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-08-19 01:09:22,496 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-08-19 01:09:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,496 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-08-19 01:09:22,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,497 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-08-19 01:09:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 01:09:22,498 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:09:22,498 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,499 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-08-19 01:09:22,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985860588] [2020-08-19 01:09:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985860588] [2020-08-19 01:09:22,536 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985985809] [2020-08-19 01:09:22,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,538 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-08-19 01:09:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,559 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-08-19 01:09:22,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 01:09:22,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,561 INFO L225 Difference]: With dead ends: 124 [2020-08-19 01:09:22,561 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 01:09:22,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 01:09:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-08-19 01:09:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-08-19 01:09:22,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-08-19 01:09:22,573 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-08-19 01:09:22,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,573 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-08-19 01:09:22,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,573 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-08-19 01:09:22,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:09:22,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:09:22,575 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-08-19 01:09:22,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301109522] [2020-08-19 01:09:22,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301109522] [2020-08-19 01:09:22,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,612 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147615104] [2020-08-19 01:09:22,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,613 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,614 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-08-19 01:09:22,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,634 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-08-19 01:09:22,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:09:22,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,636 INFO L225 Difference]: With dead ends: 111 [2020-08-19 01:09:22,636 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 01:09:22,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 01:09:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-08-19 01:09:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 01:09:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-08-19 01:09:22,646 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-08-19 01:09:22,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,647 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-08-19 01:09:22,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,647 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-08-19 01:09:22,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:09:22,648 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:09:22,649 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,649 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-08-19 01:09:22,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868628538] [2020-08-19 01:09:22,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868628538] [2020-08-19 01:09:22,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958174589] [2020-08-19 01:09:22,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,684 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-08-19 01:09:22,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,702 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-08-19 01:09:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,703 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:09:22,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,704 INFO L225 Difference]: With dead ends: 132 [2020-08-19 01:09:22,704 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 01:09:22,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 01:09:22,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-08-19 01:09:22,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-19 01:09:22,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-08-19 01:09:22,718 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-08-19 01:09:22,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,718 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-08-19 01:09:22,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,719 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-08-19 01:09:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 01:09:22,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:09:22,721 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-08-19 01:09:22,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125799585] [2020-08-19 01:09:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125799585] [2020-08-19 01:09:22,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338622054] [2020-08-19 01:09:22,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,771 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-08-19 01:09:22,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,802 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-08-19 01:09:22,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,803 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 01:09:22,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,804 INFO L225 Difference]: With dead ends: 232 [2020-08-19 01:09:22,804 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 01:09:22,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 01:09:22,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-08-19 01:09:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-19 01:09:22,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-08-19 01:09:22,824 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-08-19 01:09:22,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,825 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-08-19 01:09:22,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,827 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-08-19 01:09:22,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:09:22,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:09:22,829 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-08-19 01:09:22,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183710933] [2020-08-19 01:09:22,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183710933] [2020-08-19 01:09:22,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671212365] [2020-08-19 01:09:22,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,899 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-08-19 01:09:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,919 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-08-19 01:09:22,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:09:22,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,921 INFO L225 Difference]: With dead ends: 204 [2020-08-19 01:09:22,921 INFO L226 Difference]: Without dead ends: 142 [2020-08-19 01:09:22,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-19 01:09:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-08-19 01:09:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 01:09:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-08-19 01:09:22,932 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-08-19 01:09:22,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,933 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-08-19 01:09:22,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,933 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-08-19 01:09:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:09:22,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:22,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:22,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:09:22,935 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:22,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:22,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-08-19 01:09:22,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:22,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788447903] [2020-08-19 01:09:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:22,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:22,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788447903] [2020-08-19 01:09:22,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:22,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:22,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192397857] [2020-08-19 01:09:22,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:22,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:22,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:22,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,962 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-08-19 01:09:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:22,981 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-08-19 01:09:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:22,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:09:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:22,983 INFO L225 Difference]: With dead ends: 236 [2020-08-19 01:09:22,983 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 01:09:22,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:22,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 01:09:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-08-19 01:09:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-08-19 01:09:22,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-08-19 01:09:22,999 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-08-19 01:09:22,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:22,999 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-08-19 01:09:22,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-08-19 01:09:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:09:23,001 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:23,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:23,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:09:23,002 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:23,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:23,002 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-08-19 01:09:23,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:23,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171765664] [2020-08-19 01:09:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:23,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:23,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171765664] [2020-08-19 01:09:23,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:23,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:23,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668342120] [2020-08-19 01:09:23,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:23,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:23,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:23,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:23,029 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-08-19 01:09:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:23,051 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-08-19 01:09:23,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:23,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 01:09:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:23,054 INFO L225 Difference]: With dead ends: 444 [2020-08-19 01:09:23,054 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 01:09:23,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 01:09:23,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-08-19 01:09:23,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-08-19 01:09:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-08-19 01:09:23,069 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-08-19 01:09:23,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:23,069 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-08-19 01:09:23,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:23,070 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-08-19 01:09:23,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:09:23,071 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:23,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:23,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:09:23,072 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:23,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:23,073 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-08-19 01:09:23,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:23,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383714282] [2020-08-19 01:09:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:23,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383714282] [2020-08-19 01:09:23,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:23,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:23,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012418911] [2020-08-19 01:09:23,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:23,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:23,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:23,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:23,095 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-08-19 01:09:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:23,114 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-08-19 01:09:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:23,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:09:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:23,116 INFO L225 Difference]: With dead ends: 384 [2020-08-19 01:09:23,117 INFO L226 Difference]: Without dead ends: 266 [2020-08-19 01:09:23,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:23,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-19 01:09:23,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-08-19 01:09:23,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-19 01:09:23,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-08-19 01:09:23,131 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-08-19 01:09:23,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:23,131 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-08-19 01:09:23,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:23,131 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-08-19 01:09:23,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:09:23,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:23,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:23,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:09:23,136 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:23,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:23,137 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-08-19 01:09:23,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:23,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879903108] [2020-08-19 01:09:23,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:23,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:23,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879903108] [2020-08-19 01:09:23,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:23,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:23,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545729007] [2020-08-19 01:09:23,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:23,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:23,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:23,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:23,190 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-08-19 01:09:23,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:23,215 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-08-19 01:09:23,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:23,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:09:23,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:23,218 INFO L225 Difference]: With dead ends: 426 [2020-08-19 01:09:23,219 INFO L226 Difference]: Without dead ends: 424 [2020-08-19 01:09:23,219 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:23,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-19 01:09:23,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-08-19 01:09:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-08-19 01:09:23,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-08-19 01:09:23,233 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-08-19 01:09:23,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:23,234 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-08-19 01:09:23,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:23,234 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-08-19 01:09:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:09:23,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:09:23,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:09:23,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:09:23,236 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:09:23,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:09:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-08-19 01:09:23,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:09:23,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872485446] [2020-08-19 01:09:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:09:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:09:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:09:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:09:23,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872485446] [2020-08-19 01:09:23,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:09:23,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:09:23,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318834657] [2020-08-19 01:09:23,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:09:23,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:09:23,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:09:23,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:23,262 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-08-19 01:09:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:09:23,303 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-08-19 01:09:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:09:23,304 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 01:09:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:09:23,304 INFO L225 Difference]: With dead ends: 856 [2020-08-19 01:09:23,304 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:09:23,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:09:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:09:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:09:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:09:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:09:23,308 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-08-19 01:09:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:09:23,308 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:09:23,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:09:23,308 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:09:23,308 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:09:23,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:09:23,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:09:23,344 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 01:09:23,344 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:09:23,344 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:09:23,345 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 01:09:23,345 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 01:09:23,345 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:09:23,345 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-08-19 01:09:23,345 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-08-19 01:09:23,345 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-08-19 01:09:23,345 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:09:23,346 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-08-19 01:09:23,346 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:09:23,346 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:09:23,346 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:09:23,346 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:09:23,346 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:09:23,346 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-08-19 01:09:23,346 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-08-19 01:09:23,347 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:09:23,348 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-08-19 01:09:23,348 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-08-19 01:09:23,348 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-08-19 01:09:23,348 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-08-19 01:09:23,348 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:09:23,348 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-08-19 01:09:23,349 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-19 01:09:23,349 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-08-19 01:09:23,349 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-08-19 01:09:23,349 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 01:09:23,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:09:23 BoogieIcfgContainer [2020-08-19 01:09:23,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:09:23,368 INFO L168 Benchmark]: Toolchain (without parser) took 2433.00 ms. Allocated memory was 141.0 MB in the beginning and 235.4 MB in the end (delta: 94.4 MB). Free memory was 103.1 MB in the beginning and 144.4 MB in the end (delta: -41.3 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:23,369 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 01:09:23,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.98 ms. Allocated memory is still 141.0 MB. Free memory was 102.9 MB in the beginning and 92.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:23,371 INFO L168 Benchmark]: Boogie Preprocessor took 138.51 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 92.9 MB in the beginning and 181.4 MB in the end (delta: -88.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:23,377 INFO L168 Benchmark]: RCFGBuilder took 284.57 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 166.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:23,378 INFO L168 Benchmark]: TraceAbstraction took 1676.38 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 165.9 MB in the beginning and 144.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:09:23,383 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.98 ms. Allocated memory is still 141.0 MB. Free memory was 102.9 MB in the beginning and 92.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.51 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 92.9 MB in the beginning and 181.4 MB in the end (delta: -88.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 284.57 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 166.6 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1676.38 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 165.9 MB in the beginning and 144.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 53.5 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: 1.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.3s 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...