/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:11:09,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:11:09,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:11:09,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:11:09,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:11:09,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:11:09,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:11:09,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:11:09,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:11:09,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:11:09,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:11:09,329 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:11:09,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:11:09,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:11:09,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:11:09,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:11:09,337 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:11:09,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:11:09,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:11:09,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:11:09,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:11:09,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:11:09,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:11:09,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:11:09,348 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:11:09,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:11:09,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:11:09,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:11:09,358 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 [2020-08-21 22:11:09,382 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:11:09,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:11:09,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:11:09,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:11:09,384 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:11:09,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:11:09,385 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:11:09,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:11:09,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:11:09,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:11:09,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:11:09,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:11:09,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:11:09,389 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:11:09,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:11:09,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:11:09,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:11:09,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:11:09,390 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:11:09,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:11:09,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:11:09,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:11:09,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:11:09,391 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:11:09,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:11:09,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:11:09,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:11:09,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:11:09,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:11:09,394 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=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:11:09,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:11:09,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:11:09,764 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:11:09,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:11:09,766 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:11:09,766 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-08-21 22:11:09,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99a554c6/f5bd9a6df55a46a781e4dac448badba0/FLAG670544f79 [2020-08-21 22:11:10,279 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:11:10,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-08-21 22:11:10,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99a554c6/f5bd9a6df55a46a781e4dac448badba0/FLAG670544f79 [2020-08-21 22:11:10,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d99a554c6/f5bd9a6df55a46a781e4dac448badba0 [2020-08-21 22:11:10,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:11:10,712 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:11:10,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:10,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:11:10,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:11:10,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:10" (1/1) ... [2020-08-21 22:11:10,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61445f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10, skipping insertion in model container [2020-08-21 22:11:10,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:11:10" (1/1) ... [2020-08-21 22:11:10,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:11:10,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:11:10,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:10,935 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:11:10,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:11:10,971 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:11:10,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10 WrapperNode [2020-08-21 22:11:10,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:11:10,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:11:10,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:11:10,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:11:10,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10" (1/1) ... [2020-08-21 22:11:10,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10" (1/1) ... [2020-08-21 22:11:11,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10" (1/1) ... [2020-08-21 22:11:11,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10" (1/1) ... [2020-08-21 22:11:11,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10" (1/1) ... [2020-08-21 22:11:11,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10" (1/1) ... [2020-08-21 22:11:11,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10" (1/1) ... [2020-08-21 22:11:11,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:11:11,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:11:11,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:11:11,100 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:11:11,101 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10" (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 [2020-08-21 22:11:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:11:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:11:11,164 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:11:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:11:11,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:11:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:11:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:11:11,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:11:11,487 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:11:11,487 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 22:11:11,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:11 BoogieIcfgContainer [2020-08-21 22:11:11,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:11:11,494 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:11:11,495 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:11:11,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:11:11,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:11:10" (1/3) ... [2020-08-21 22:11:11,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbfc620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:11, skipping insertion in model container [2020-08-21 22:11:11,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:11:10" (2/3) ... [2020-08-21 22:11:11,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cbfc620 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:11:11, skipping insertion in model container [2020-08-21 22:11:11,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:11:11" (3/3) ... [2020-08-21 22:11:11,514 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-08-21 22:11:11,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:11:11,532 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:11:11,545 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:11:11,567 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:11:11,567 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:11:11,567 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:11:11,567 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:11:11,567 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:11:11,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:11:11,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:11:11,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:11:11,587 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-21 22:11:11,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 22:11:11,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:11,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:11,594 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:11,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:11,599 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-08-21 22:11:11,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:11,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867587634] [2020-08-21 22:11:11,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:11,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867587634] [2020-08-21 22:11:11,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:11,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:11,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080963820] [2020-08-21 22:11:11,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:11,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:11,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:11,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:11,801 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-21 22:11:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:11,867 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-08-21 22:11:11,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:11,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-21 22:11:11,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:11,881 INFO L225 Difference]: With dead ends: 63 [2020-08-21 22:11:11,882 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 22:11:11,886 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 [2020-08-21 22:11:11,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 22:11:11,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-08-21 22:11:11,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-21 22:11:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-08-21 22:11:11,933 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-08-21 22:11:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:11,933 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-08-21 22:11:11,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:11,934 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-08-21 22:11:11,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-21 22:11:11,935 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:11,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:11,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:11:11,936 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:11,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:11,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-08-21 22:11:11,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:11,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446435083] [2020-08-21 22:11:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:11,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:11,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:11,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446435083] [2020-08-21 22:11:11,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120179732] [2020-08-21 22:11:12,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,003 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-08-21 22:11:12,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,032 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-08-21 22:11:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-21 22:11:12,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,035 INFO L225 Difference]: With dead ends: 77 [2020-08-21 22:11:12,035 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 22:11:12,036 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 [2020-08-21 22:11:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 22:11:12,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-08-21 22:11:12,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-21 22:11:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-08-21 22:11:12,046 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-08-21 22:11:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,046 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-08-21 22:11:12,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,047 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-08-21 22:11:12,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 22:11:12,048 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:11:12,049 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,049 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-08-21 22:11:12,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224679067] [2020-08-21 22:11:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224679067] [2020-08-21 22:11:12,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495596981] [2020-08-21 22:11:12,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,103 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-08-21 22:11:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,129 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-08-21 22:11:12,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-21 22:11:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,132 INFO L225 Difference]: With dead ends: 72 [2020-08-21 22:11:12,132 INFO L226 Difference]: Without dead ends: 51 [2020-08-21 22:11:12,133 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 [2020-08-21 22:11:12,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-21 22:11:12,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-08-21 22:11:12,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-21 22:11:12,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-08-21 22:11:12,142 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-08-21 22:11:12,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,142 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-08-21 22:11:12,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,143 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-08-21 22:11:12,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 22:11:12,144 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:11:12,144 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,145 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-08-21 22:11:12,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386714863] [2020-08-21 22:11:12,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386714863] [2020-08-21 22:11:12,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115111795] [2020-08-21 22:11:12,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,195 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-08-21 22:11:12,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,221 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-08-21 22:11:12,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-21 22:11:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,223 INFO L225 Difference]: With dead ends: 88 [2020-08-21 22:11:12,223 INFO L226 Difference]: Without dead ends: 86 [2020-08-21 22:11:12,224 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 [2020-08-21 22:11:12,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-21 22:11:12,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-08-21 22:11:12,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-21 22:11:12,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-08-21 22:11:12,235 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-08-21 22:11:12,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,236 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-08-21 22:11:12,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,236 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-08-21 22:11:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 22:11:12,237 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:11:12,238 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,239 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-08-21 22:11:12,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354404464] [2020-08-21 22:11:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354404464] [2020-08-21 22:11:12,284 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347422565] [2020-08-21 22:11:12,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,288 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-08-21 22:11:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,333 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-08-21 22:11:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-21 22:11:12,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,338 INFO L225 Difference]: With dead ends: 144 [2020-08-21 22:11:12,338 INFO L226 Difference]: Without dead ends: 88 [2020-08-21 22:11:12,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-21 22:11:12,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-08-21 22:11:12,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-21 22:11:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-08-21 22:11:12,362 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-08-21 22:11:12,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,362 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-08-21 22:11:12,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,362 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-08-21 22:11:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 22:11:12,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:11:12,368 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-08-21 22:11:12,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1314518732] [2020-08-21 22:11:12,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1314518732] [2020-08-21 22:11:12,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937578194] [2020-08-21 22:11:12,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,451 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-08-21 22:11:12,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,473 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-08-21 22:11:12,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,474 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-21 22:11:12,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,476 INFO L225 Difference]: With dead ends: 129 [2020-08-21 22:11:12,476 INFO L226 Difference]: Without dead ends: 90 [2020-08-21 22:11:12,477 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 [2020-08-21 22:11:12,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-21 22:11:12,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-08-21 22:11:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-21 22:11:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-08-21 22:11:12,489 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-08-21 22:11:12,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,490 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-08-21 22:11:12,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,490 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-08-21 22:11:12,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 22:11:12,491 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:11:12,492 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,492 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-08-21 22:11:12,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746705267] [2020-08-21 22:11:12,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746705267] [2020-08-21 22:11:12,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806570222] [2020-08-21 22:11:12,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,524 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-08-21 22:11:12,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,543 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-08-21 22:11:12,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-21 22:11:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,545 INFO L225 Difference]: With dead ends: 156 [2020-08-21 22:11:12,546 INFO L226 Difference]: Without dead ends: 154 [2020-08-21 22:11:12,546 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 [2020-08-21 22:11:12,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-21 22:11:12,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-08-21 22:11:12,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-21 22:11:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-08-21 22:11:12,560 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-08-21 22:11:12,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,561 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-08-21 22:11:12,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-08-21 22:11:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 22:11:12,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:11:12,563 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-08-21 22:11:12,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545129197] [2020-08-21 22:11:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545129197] [2020-08-21 22:11:12,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082047645] [2020-08-21 22:11:12,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,597 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-08-21 22:11:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,619 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-08-21 22:11:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,619 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-21 22:11:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,621 INFO L225 Difference]: With dead ends: 272 [2020-08-21 22:11:12,632 INFO L226 Difference]: Without dead ends: 162 [2020-08-21 22:11:12,633 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 [2020-08-21 22:11:12,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-21 22:11:12,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-08-21 22:11:12,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-21 22:11:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-08-21 22:11:12,648 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-08-21 22:11:12,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,648 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-08-21 22:11:12,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,649 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-08-21 22:11:12,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:11:12,650 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,651 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:11:12,651 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-08-21 22:11:12,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947429830] [2020-08-21 22:11:12,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947429830] [2020-08-21 22:11:12,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160479942] [2020-08-21 22:11:12,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,685 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-08-21 22:11:12,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,710 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-08-21 22:11:12,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,711 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 22:11:12,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,712 INFO L225 Difference]: With dead ends: 240 [2020-08-21 22:11:12,712 INFO L226 Difference]: Without dead ends: 166 [2020-08-21 22:11:12,713 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 [2020-08-21 22:11:12,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-21 22:11:12,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-08-21 22:11:12,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-21 22:11:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-08-21 22:11:12,725 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-08-21 22:11:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,725 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-08-21 22:11:12,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-08-21 22:11:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:11:12,727 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:11:12,728 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-08-21 22:11:12,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795961435] [2020-08-21 22:11:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795961435] [2020-08-21 22:11:12,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178448058] [2020-08-21 22:11:12,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,753 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-08-21 22:11:12,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,773 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-08-21 22:11:12,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 22:11:12,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,777 INFO L225 Difference]: With dead ends: 284 [2020-08-21 22:11:12,777 INFO L226 Difference]: Without dead ends: 282 [2020-08-21 22:11:12,778 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 [2020-08-21 22:11:12,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-21 22:11:12,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-08-21 22:11:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-21 22:11:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-08-21 22:11:12,795 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-08-21 22:11:12,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,796 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-08-21 22:11:12,796 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,796 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-08-21 22:11:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 22:11:12,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:11:12,803 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,803 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-08-21 22:11:12,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169797889] [2020-08-21 22:11:12,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169797889] [2020-08-21 22:11:12,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329727282] [2020-08-21 22:11:12,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,859 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-08-21 22:11:12,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,883 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-08-21 22:11:12,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,884 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 22:11:12,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,886 INFO L225 Difference]: With dead ends: 524 [2020-08-21 22:11:12,886 INFO L226 Difference]: Without dead ends: 306 [2020-08-21 22:11:12,888 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 [2020-08-21 22:11:12,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-21 22:11:12,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-08-21 22:11:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-21 22:11:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-08-21 22:11:12,903 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-08-21 22:11:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,903 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-08-21 22:11:12,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,903 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-08-21 22:11:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 22:11:12,905 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,906 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] [2020-08-21 22:11:12,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 22:11:12,906 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,906 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-08-21 22:11:12,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454736990] [2020-08-21 22:11:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:12,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:12,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454736990] [2020-08-21 22:11:12,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:12,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:12,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34312281] [2020-08-21 22:11:12,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:12,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:12,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:12,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:12,930 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-08-21 22:11:12,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:12,950 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-08-21 22:11:12,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:12,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-21 22:11:12,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:12,952 INFO L225 Difference]: With dead ends: 456 [2020-08-21 22:11:12,953 INFO L226 Difference]: Without dead ends: 314 [2020-08-21 22:11:12,954 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 [2020-08-21 22:11:12,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-21 22:11:12,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-08-21 22:11:12,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-21 22:11:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-08-21 22:11:12,968 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-08-21 22:11:12,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:12,968 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-08-21 22:11:12,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:12,968 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-08-21 22:11:12,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 22:11:12,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:12,970 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:11:12,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 22:11:12,971 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:12,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:12,971 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-08-21 22:11:12,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:12,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75565226] [2020-08-21 22:11:12,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:13,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75565226] [2020-08-21 22:11:13,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:13,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:13,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868823797] [2020-08-21 22:11:13,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:13,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:13,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:13,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:13,014 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-08-21 22:11:13,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:13,039 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-08-21 22:11:13,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:13,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-21 22:11:13,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:13,043 INFO L225 Difference]: With dead ends: 524 [2020-08-21 22:11:13,043 INFO L226 Difference]: Without dead ends: 522 [2020-08-21 22:11:13,044 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 [2020-08-21 22:11:13,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-21 22:11:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-08-21 22:11:13,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-08-21 22:11:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-08-21 22:11:13,061 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-08-21 22:11:13,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:13,061 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-08-21 22:11:13,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:13,062 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-08-21 22:11:13,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 22:11:13,063 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:13,063 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] [2020-08-21 22:11:13,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 22:11:13,064 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:13,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-08-21 22:11:13,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:13,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726021030] [2020-08-21 22:11:13,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:13,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726021030] [2020-08-21 22:11:13,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:13,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:13,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402886010] [2020-08-21 22:11:13,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:13,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:13,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:13,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:13,088 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-08-21 22:11:13,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:13,127 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-08-21 22:11:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:13,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-21 22:11:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:13,131 INFO L225 Difference]: With dead ends: 1020 [2020-08-21 22:11:13,132 INFO L226 Difference]: Without dead ends: 586 [2020-08-21 22:11:13,133 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 [2020-08-21 22:11:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-21 22:11:13,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-08-21 22:11:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-08-21 22:11:13,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-08-21 22:11:13,158 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-08-21 22:11:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:13,158 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-08-21 22:11:13,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-08-21 22:11:13,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 22:11:13,161 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:13,161 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] [2020-08-21 22:11:13,161 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 22:11:13,161 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:13,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:13,162 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-08-21 22:11:13,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:13,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164487706] [2020-08-21 22:11:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:13,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:13,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [164487706] [2020-08-21 22:11:13,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:13,202 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:13,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898959311] [2020-08-21 22:11:13,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:13,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:13,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:13,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:13,204 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-08-21 22:11:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:13,232 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-08-21 22:11:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:13,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 22:11:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:13,236 INFO L225 Difference]: With dead ends: 876 [2020-08-21 22:11:13,236 INFO L226 Difference]: Without dead ends: 602 [2020-08-21 22:11:13,239 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 [2020-08-21 22:11:13,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-08-21 22:11:13,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-08-21 22:11:13,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-21 22:11:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-08-21 22:11:13,261 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-08-21 22:11:13,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:13,261 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-08-21 22:11:13,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-08-21 22:11:13,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 22:11:13,263 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:13,263 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] [2020-08-21 22:11:13,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 22:11:13,263 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:13,264 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-08-21 22:11:13,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:13,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474264519] [2020-08-21 22:11:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:13,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474264519] [2020-08-21 22:11:13,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:13,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:13,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453768219] [2020-08-21 22:11:13,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:13,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:13,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:13,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:13,311 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-08-21 22:11:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:13,354 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-08-21 22:11:13,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:13,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 22:11:13,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:13,360 INFO L225 Difference]: With dead ends: 970 [2020-08-21 22:11:13,360 INFO L226 Difference]: Without dead ends: 968 [2020-08-21 22:11:13,361 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 [2020-08-21 22:11:13,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-08-21 22:11:13,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-08-21 22:11:13,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-08-21 22:11:13,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-08-21 22:11:13,396 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-08-21 22:11:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:13,398 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-08-21 22:11:13,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-08-21 22:11:13,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 22:11:13,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:11:13,401 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] [2020-08-21 22:11:13,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 22:11:13,402 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:11:13,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:11:13,402 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-08-21 22:11:13,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:11:13,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610940391] [2020-08-21 22:11:13,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:11:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:11:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:11:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 22:11:13,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610940391] [2020-08-21 22:11:13,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:11:13,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:11:13,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291941696] [2020-08-21 22:11:13,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:11:13,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:11:13,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:11:13,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:13,435 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-08-21 22:11:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:11:13,479 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-08-21 22:11:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:11:13,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 22:11:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:11:13,481 INFO L225 Difference]: With dead ends: 1992 [2020-08-21 22:11:13,481 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 22:11:13,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:11:13,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 22:11:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 22:11:13,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 22:11:13,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 22:11:13,486 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-21 22:11:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:11:13,486 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 22:11:13,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:11:13,487 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 22:11:13,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 22:11:13,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 22:11:13,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 22:11:13,512 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 22:11:13,512 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:11:13,513 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 22:11:13,513 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 22:11:13,513 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 22:11:13,513 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 22:11:13,513 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-08-21 22:11:13,513 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-08-21 22:11:13,514 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,514 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-08-21 22:11:13,514 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-08-21 22:11:13,514 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-08-21 22:11:13,514 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,514 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,514 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,515 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-08-21 22:11:13,515 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-08-21 22:11:13,515 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,515 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-08-21 22:11:13,515 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-08-21 22:11:13,516 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-08-21 22:11:13,516 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,516 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-08-21 22:11:13,516 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-08-21 22:11:13,516 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-08-21 22:11:13,516 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-08-21 22:11:13,517 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,526 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,526 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,526 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-21 22:11:13,526 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,526 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-08-21 22:11:13,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:11:13 BoogieIcfgContainer [2020-08-21 22:11:13,538 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:11:13,540 INFO L168 Benchmark]: Toolchain (without parser) took 2827.71 ms. Allocated memory was 140.0 MB in the beginning and 246.4 MB in the end (delta: 106.4 MB). Free memory was 102.7 MB in the beginning and 218.7 MB in the end (delta: -115.9 MB). Peak memory consumption was 116.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:13,541 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:11:13,542 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.45 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 92.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:13,543 INFO L168 Benchmark]: Boogie Preprocessor took 125.85 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.4 MB in the beginning and 179.8 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:13,543 INFO L168 Benchmark]: RCFGBuilder took 391.94 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 163.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:13,544 INFO L168 Benchmark]: TraceAbstraction took 2043.45 ms. Allocated memory was 201.9 MB in the beginning and 246.4 MB in the end (delta: 44.6 MB). Free memory was 163.8 MB in the beginning and 218.7 MB in the end (delta: -54.9 MB). Peak memory consumption was 115.7 MB. Max. memory is 7.1 GB. [2020-08-21 22:11:13,547 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 259.45 ms. Allocated memory is still 140.0 MB. Free memory was 102.5 MB in the beginning and 92.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.85 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.4 MB in the beginning and 179.8 MB in the end (delta: -87.3 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 391.94 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 163.8 MB in the end (delta: 16.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2043.45 ms. Allocated memory was 201.9 MB in the beginning and 246.4 MB in the end (delta: 44.6 MB). Free memory was 163.8 MB in the beginning and 218.7 MB in the end (delta: -54.9 MB). Peak memory consumption was 115.7 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: 1.9s, 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...