/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=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:46:36,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:46:36,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:46:36,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:46:36,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:46:36,950 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:46:36,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:46:36,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:46:36,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:46:36,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:46:36,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:46:36,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:46:36,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:46:36,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:46:36,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:46:36,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:46:36,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:46:36,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:46:36,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:46:36,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:46:36,983 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:46:36,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:46:36,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:46:36,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:46:36,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:46:37,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:46:37,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:46:37,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:46:37,016 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 02:46:37,038 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:46:37,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:46:37,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:46:37,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:46:37,040 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:46:37,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:46:37,041 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:46:37,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:46:37,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:46:37,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:46:37,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:46:37,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:46:37,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:46:37,042 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:46:37,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:46:37,042 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:46:37,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:46:37,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:46:37,043 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:46:37,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:46:37,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:46:37,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:46:37,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:46:37,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:46:37,044 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:46:37,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:46:37,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:46:37,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:46:37,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:46:37,045 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=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:46:37,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:46:37,342 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:46:37,347 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:46:37,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:46:37,352 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:46:37,353 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-08-19 02:46:37,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86ad60a3b/52357af1cb454b39854a434f2b81cd1c/FLAGe87bf2ef3 [2020-08-19 02:46:37,916 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:46:37,917 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-08-19 02:46:37,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86ad60a3b/52357af1cb454b39854a434f2b81cd1c/FLAGe87bf2ef3 [2020-08-19 02:46:38,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86ad60a3b/52357af1cb454b39854a434f2b81cd1c [2020-08-19 02:46:38,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:46:38,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:46:38,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:46:38,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:46:38,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:46:38,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:46:38" (1/1) ... [2020-08-19 02:46:38,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c00f55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38, skipping insertion in model container [2020-08-19 02:46:38,299 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:46:38" (1/1) ... [2020-08-19 02:46:38,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:46:38,331 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:46:38,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:46:38,537 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:46:38,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:46:38,574 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:46:38,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38 WrapperNode [2020-08-19 02:46:38,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:46:38,576 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:46:38,576 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:46:38,576 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:46:38,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38" (1/1) ... [2020-08-19 02:46:38,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38" (1/1) ... [2020-08-19 02:46:38,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38" (1/1) ... [2020-08-19 02:46:38,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38" (1/1) ... [2020-08-19 02:46:38,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38" (1/1) ... [2020-08-19 02:46:38,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38" (1/1) ... [2020-08-19 02:46:38,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38" (1/1) ... [2020-08-19 02:46:38,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:46:38,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:46:38,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:46:38,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:46:38,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38" (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 02:46:38,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:46:38,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:46:38,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:46:38,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:46:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:46:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:46:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:46:38,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:46:39,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:46:39,012 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:46:39,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:46:39 BoogieIcfgContainer [2020-08-19 02:46:39,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:46:39,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:46:39,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:46:39,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:46:39,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:46:38" (1/3) ... [2020-08-19 02:46:39,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fd3bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:46:39, skipping insertion in model container [2020-08-19 02:46:39,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:38" (2/3) ... [2020-08-19 02:46:39,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77fd3bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:46:39, skipping insertion in model container [2020-08-19 02:46:39,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:46:39" (3/3) ... [2020-08-19 02:46:39,025 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-08-19 02:46:39,037 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:46:39,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:46:39,061 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:46:39,086 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:46:39,086 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:46:39,086 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:46:39,087 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:46:39,087 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:46:39,087 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:46:39,087 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:46:39,087 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:46:39,107 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-19 02:46:39,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:46:39,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:39,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:39,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:39,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:39,127 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-08-19 02:46:39,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:39,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457274326] [2020-08-19 02:46:39,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:39,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,324 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 02:46:39,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457274326] [2020-08-19 02:46:39,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:39,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:39,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556529613] [2020-08-19 02:46:39,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:39,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:39,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:39,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:39,348 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-19 02:46:39,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:39,419 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-08-19 02:46:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:39,422 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 02:46:39,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:39,432 INFO L225 Difference]: With dead ends: 63 [2020-08-19 02:46:39,432 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 02:46:39,436 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 02:46:39,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 02:46:39,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-08-19 02:46:39,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-19 02:46:39,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-08-19 02:46:39,478 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-08-19 02:46:39,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:39,478 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-08-19 02:46:39,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:39,479 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-08-19 02:46:39,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:46:39,480 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:39,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:39,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:46:39,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:39,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-08-19 02:46:39,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:39,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296086749] [2020-08-19 02:46:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,535 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 02:46:39,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296086749] [2020-08-19 02:46:39,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:39,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:39,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687412366] [2020-08-19 02:46:39,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:39,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:39,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:39,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:39,539 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-08-19 02:46:39,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:39,570 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-08-19 02:46:39,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:39,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 02:46:39,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:39,573 INFO L225 Difference]: With dead ends: 77 [2020-08-19 02:46:39,573 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 02:46:39,574 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 02:46:39,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 02:46:39,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-08-19 02:46:39,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-19 02:46:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-08-19 02:46:39,584 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-08-19 02:46:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:39,585 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-08-19 02:46:39,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:39,585 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-08-19 02:46:39,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:46:39,586 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:39,586 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 02:46:39,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:46:39,587 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:39,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:39,588 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-08-19 02:46:39,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:39,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152796762] [2020-08-19 02:46:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,640 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 02:46:39,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152796762] [2020-08-19 02:46:39,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:39,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:39,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140501645] [2020-08-19 02:46:39,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:39,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:39,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:39,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:39,643 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-08-19 02:46:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:39,663 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-08-19 02:46:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:39,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 02:46:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:39,666 INFO L225 Difference]: With dead ends: 72 [2020-08-19 02:46:39,666 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 02:46:39,667 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 02:46:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 02:46:39,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-08-19 02:46:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-19 02:46:39,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-08-19 02:46:39,675 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-08-19 02:46:39,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:39,676 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-08-19 02:46:39,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-08-19 02:46:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:46:39,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:39,677 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 02:46:39,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:46:39,678 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:39,679 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-08-19 02:46:39,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:39,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864024022] [2020-08-19 02:46:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,744 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 02:46:39,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864024022] [2020-08-19 02:46:39,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:39,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:39,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410715886] [2020-08-19 02:46:39,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:39,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:39,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:39,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:39,750 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-08-19 02:46:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:39,776 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-08-19 02:46:39,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:39,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 02:46:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:39,780 INFO L225 Difference]: With dead ends: 88 [2020-08-19 02:46:39,780 INFO L226 Difference]: Without dead ends: 86 [2020-08-19 02:46:39,781 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 02:46:39,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-19 02:46:39,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-08-19 02:46:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-19 02:46:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-08-19 02:46:39,791 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-08-19 02:46:39,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:39,792 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-08-19 02:46:39,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-08-19 02:46:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:46:39,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:39,793 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 02:46:39,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:46:39,794 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:39,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:39,794 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-08-19 02:46:39,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:39,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501055967] [2020-08-19 02:46:39,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:39,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501055967] [2020-08-19 02:46:39,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:39,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:39,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842247472] [2020-08-19 02:46:39,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:39,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:39,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:39,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:39,830 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-08-19 02:46:39,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:39,850 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-08-19 02:46:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:39,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 02:46:39,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:39,852 INFO L225 Difference]: With dead ends: 144 [2020-08-19 02:46:39,853 INFO L226 Difference]: Without dead ends: 88 [2020-08-19 02:46:39,853 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 02:46:39,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-19 02:46:39,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-08-19 02:46:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-19 02:46:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-08-19 02:46:39,864 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-08-19 02:46:39,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:39,864 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-08-19 02:46:39,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:39,865 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-08-19 02:46:39,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:46:39,866 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:39,866 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 02:46:39,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:46:39,866 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:39,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:39,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-08-19 02:46:39,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:39,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197352147] [2020-08-19 02:46:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,898 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 02:46:39,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197352147] [2020-08-19 02:46:39,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:39,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:39,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535018777] [2020-08-19 02:46:39,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:39,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:39,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:39,901 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-08-19 02:46:39,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:39,926 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-08-19 02:46:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:39,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 02:46:39,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:39,928 INFO L225 Difference]: With dead ends: 129 [2020-08-19 02:46:39,928 INFO L226 Difference]: Without dead ends: 90 [2020-08-19 02:46:39,929 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 02:46:39,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-19 02:46:39,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-08-19 02:46:39,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-19 02:46:39,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-08-19 02:46:39,938 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-08-19 02:46:39,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:39,939 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-08-19 02:46:39,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:39,939 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-08-19 02:46:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:46:39,940 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:39,940 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 02:46:39,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:46:39,941 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:39,941 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-08-19 02:46:39,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:39,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448891393] [2020-08-19 02:46:39,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:39,976 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 02:46:39,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448891393] [2020-08-19 02:46:39,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:39,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:39,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875025724] [2020-08-19 02:46:39,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:39,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:39,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:39,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:39,979 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-08-19 02:46:39,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,000 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-08-19 02:46:40,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 02:46:40,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,002 INFO L225 Difference]: With dead ends: 156 [2020-08-19 02:46:40,002 INFO L226 Difference]: Without dead ends: 154 [2020-08-19 02:46:40,003 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 02:46:40,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-19 02:46:40,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-08-19 02:46:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 02:46:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-08-19 02:46:40,017 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-08-19 02:46:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,017 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-08-19 02:46:40,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-08-19 02:46:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:46:40,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,019 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 02:46:40,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:46:40,023 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-08-19 02:46:40,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147113052] [2020-08-19 02:46:40,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,103 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 02:46:40,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147113052] [2020-08-19 02:46:40,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654180700] [2020-08-19 02:46:40,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,106 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-08-19 02:46:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,127 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-08-19 02:46:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 02:46:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,129 INFO L225 Difference]: With dead ends: 272 [2020-08-19 02:46:40,130 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 02:46:40,131 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 02:46:40,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 02:46:40,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-08-19 02:46:40,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-19 02:46:40,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-08-19 02:46:40,145 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-08-19 02:46:40,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,145 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-08-19 02:46:40,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,145 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-08-19 02:46:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:46:40,147 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,147 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 02:46:40,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:46:40,148 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-08-19 02:46:40,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146681843] [2020-08-19 02:46:40,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,176 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 02:46:40,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146681843] [2020-08-19 02:46:40,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255734462] [2020-08-19 02:46:40,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,178 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-08-19 02:46:40,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,196 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-08-19 02:46:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 02:46:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,198 INFO L225 Difference]: With dead ends: 240 [2020-08-19 02:46:40,198 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 02:46:40,199 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 02:46:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 02:46:40,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-08-19 02:46:40,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-19 02:46:40,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-08-19 02:46:40,211 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-08-19 02:46:40,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,211 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-08-19 02:46:40,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,211 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-08-19 02:46:40,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:46:40,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,213 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 02:46:40,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:46:40,213 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-08-19 02:46:40,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332875483] [2020-08-19 02:46:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,238 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 02:46:40,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332875483] [2020-08-19 02:46:40,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235869143] [2020-08-19 02:46:40,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,240 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-08-19 02:46:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,260 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-08-19 02:46:40,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,261 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 02:46:40,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,263 INFO L225 Difference]: With dead ends: 284 [2020-08-19 02:46:40,263 INFO L226 Difference]: Without dead ends: 282 [2020-08-19 02:46:40,263 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 02:46:40,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-19 02:46:40,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-08-19 02:46:40,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-19 02:46:40,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-08-19 02:46:40,277 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-08-19 02:46:40,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,277 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-08-19 02:46:40,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,277 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-08-19 02:46:40,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:46:40,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,280 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 02:46:40,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:46:40,280 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,280 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-08-19 02:46:40,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876785034] [2020-08-19 02:46:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,328 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 02:46:40,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876785034] [2020-08-19 02:46:40,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036586179] [2020-08-19 02:46:40,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,331 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-08-19 02:46:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,359 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-08-19 02:46:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 02:46:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,362 INFO L225 Difference]: With dead ends: 524 [2020-08-19 02:46:40,362 INFO L226 Difference]: Without dead ends: 306 [2020-08-19 02:46:40,363 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 02:46:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-19 02:46:40,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-08-19 02:46:40,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 02:46:40,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-08-19 02:46:40,381 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-08-19 02:46:40,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,382 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-08-19 02:46:40,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,385 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-08-19 02:46:40,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 02:46:40,388 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,388 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:40,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:46:40,389 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,389 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-08-19 02:46:40,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66222536] [2020-08-19 02:46:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,435 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 02:46:40,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66222536] [2020-08-19 02:46:40,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507336294] [2020-08-19 02:46:40,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,438 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-08-19 02:46:40,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,464 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-08-19 02:46:40,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,465 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 02:46:40,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,467 INFO L225 Difference]: With dead ends: 456 [2020-08-19 02:46:40,467 INFO L226 Difference]: Without dead ends: 314 [2020-08-19 02:46:40,470 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 02:46:40,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-19 02:46:40,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-08-19 02:46:40,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-19 02:46:40,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-08-19 02:46:40,491 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-08-19 02:46:40,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,492 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-08-19 02:46:40,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,492 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-08-19 02:46:40,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 02:46:40,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:40,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:46:40,496 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,497 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-08-19 02:46:40,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779457851] [2020-08-19 02:46:40,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,563 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 02:46:40,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779457851] [2020-08-19 02:46:40,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374637787] [2020-08-19 02:46:40,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,572 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-08-19 02:46:40,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,601 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-08-19 02:46:40,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 02:46:40,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,606 INFO L225 Difference]: With dead ends: 524 [2020-08-19 02:46:40,607 INFO L226 Difference]: Without dead ends: 522 [2020-08-19 02:46:40,607 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 02:46:40,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-19 02:46:40,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-08-19 02:46:40,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-08-19 02:46:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-08-19 02:46:40,624 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-08-19 02:46:40,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,625 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-08-19 02:46:40,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,625 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-08-19 02:46:40,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 02:46:40,629 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:40,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 02:46:40,630 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-08-19 02:46:40,630 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591766347] [2020-08-19 02:46:40,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,655 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 02:46:40,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591766347] [2020-08-19 02:46:40,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787102889] [2020-08-19 02:46:40,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,657 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-08-19 02:46:40,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,684 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-08-19 02:46:40,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,685 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 02:46:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,688 INFO L225 Difference]: With dead ends: 1020 [2020-08-19 02:46:40,688 INFO L226 Difference]: Without dead ends: 586 [2020-08-19 02:46:40,690 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 02:46:40,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-19 02:46:40,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-08-19 02:46:40,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-08-19 02:46:40,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-08-19 02:46:40,710 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-08-19 02:46:40,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,711 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-08-19 02:46:40,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-08-19 02:46:40,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:46:40,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:40,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 02:46:40,713 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,713 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-08-19 02:46:40,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878356065] [2020-08-19 02:46:40,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,736 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 02:46:40,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878356065] [2020-08-19 02:46:40,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073038994] [2020-08-19 02:46:40,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,738 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-08-19 02:46:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,762 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-08-19 02:46:40,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 02:46:40,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,766 INFO L225 Difference]: With dead ends: 876 [2020-08-19 02:46:40,766 INFO L226 Difference]: Without dead ends: 602 [2020-08-19 02:46:40,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-08-19 02:46:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-08-19 02:46:40,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-19 02:46:40,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-08-19 02:46:40,789 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-08-19 02:46:40,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,789 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-08-19 02:46:40,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,790 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-08-19 02:46:40,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:46:40,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:40,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 02:46:40,792 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,792 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-08-19 02:46:40,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049554870] [2020-08-19 02:46:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,814 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 02:46:40,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049554870] [2020-08-19 02:46:40,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060745122] [2020-08-19 02:46:40,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,817 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-08-19 02:46:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,851 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-08-19 02:46:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 02:46:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,857 INFO L225 Difference]: With dead ends: 970 [2020-08-19 02:46:40,857 INFO L226 Difference]: Without dead ends: 968 [2020-08-19 02:46:40,858 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 02:46:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-08-19 02:46:40,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-08-19 02:46:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-08-19 02:46:40,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-08-19 02:46:40,892 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-08-19 02:46:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,893 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-08-19 02:46:40,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-08-19 02:46:40,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:46:40,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:40,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 02:46:40,897 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,897 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-08-19 02:46:40,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993293035] [2020-08-19 02:46:40,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:40,917 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 02:46:40,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993293035] [2020-08-19 02:46:40,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:40,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:40,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393314793] [2020-08-19 02:46:40,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:40,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:40,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:40,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:40,928 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-08-19 02:46:40,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:40,965 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-08-19 02:46:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:40,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 02:46:40,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:40,967 INFO L225 Difference]: With dead ends: 1992 [2020-08-19 02:46:40,967 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:46:40,970 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 02:46:40,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:46:40,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:46:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:46:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:46:40,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-19 02:46:40,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:40,972 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:46:40,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:46:40,972 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:46:40,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 02:46:40,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:46:40,996 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 02:46:40,996 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:46:40,996 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:46:40,996 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 02:46:40,996 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 02:46:40,996 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:46:40,997 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-08-19 02:46:40,997 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-08-19 02:46:40,997 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:40,997 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-08-19 02:46:40,997 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-08-19 02:46:40,997 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-08-19 02:46:40,997 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:40,997 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:40,998 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:40,998 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-08-19 02:46:40,998 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-08-19 02:46:40,998 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:40,998 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-08-19 02:46:40,998 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-08-19 02:46:40,998 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-08-19 02:46:40,999 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:40,999 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-08-19 02:46:40,999 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-08-19 02:46:40,999 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-08-19 02:46:40,999 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-08-19 02:46:40,999 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:40,999 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:40,999 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:41,000 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-19 02:46:41,000 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:41,000 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 02:46:41,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:46:41 BoogieIcfgContainer [2020-08-19 02:46:41,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:46:41,015 INFO L168 Benchmark]: Toolchain (without parser) took 2724.34 ms. Allocated memory was 141.6 MB in the beginning and 242.2 MB in the end (delta: 100.7 MB). Free memory was 103.6 MB in the beginning and 201.4 MB in the end (delta: -97.8 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:41,015 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:46:41,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.88 ms. Allocated memory is still 141.6 MB. Free memory was 103.4 MB in the beginning and 93.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:41,017 INFO L168 Benchmark]: Boogie Preprocessor took 119.37 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 181.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:41,018 INFO L168 Benchmark]: RCFGBuilder took 321.60 ms. Allocated memory is still 203.9 MB. Free memory was 181.6 MB in the beginning and 165.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:41,018 INFO L168 Benchmark]: TraceAbstraction took 1993.33 ms. Allocated memory was 203.9 MB in the beginning and 242.2 MB in the end (delta: 38.3 MB). Free memory was 165.9 MB in the beginning and 201.4 MB in the end (delta: -35.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:41,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.88 ms. Allocated memory is still 141.6 MB. Free memory was 103.4 MB in the beginning and 93.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.37 ms. Allocated memory was 141.6 MB in the beginning and 203.9 MB in the end (delta: 62.4 MB). Free memory was 93.3 MB in the beginning and 181.6 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.60 ms. Allocated memory is still 203.9 MB. Free memory was 181.6 MB in the beginning and 165.9 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1993.33 ms. Allocated memory was 203.9 MB in the beginning and 242.2 MB in the end (delta: 38.3 MB). Free memory was 165.9 MB in the beginning and 201.4 MB in the end (delta: -35.5 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 417 SDslu, 612 SDs, 0 SdLazy, 91 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 17 MinimizatonAttempts, 270 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 74 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 9690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...