/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:35:03,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:35:03,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:35:03,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:35:03,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:35:03,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:35:03,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:35:03,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:35:03,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:35:03,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:35:03,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:35:03,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:35:03,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:35:03,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:35:03,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:35:03,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:35:03,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:35:03,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:35:03,496 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:35:03,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:35:03,506 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:35:03,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:35:03,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:35:03,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:35:03,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 03:35:03,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:35:03,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:35:03,529 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:35:03,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 03:35:03,577 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:35:03,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:35:03,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:35:03,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:35:03,580 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:35:03,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:35:03,581 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:35:03,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:35:03,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:35:03,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:35:03,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:35:03,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:35:03,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:35:03,583 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:35:03,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:35:03,584 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:35:03,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:35:03,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:35:03,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:35:03,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:35:03,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:35:03,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:35:03,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:35:03,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:35:03,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:35:03,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:35:03,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:35:03,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:35:03,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:35:03,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:35:03,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:35:03,947 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:35:03,950 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:35:03,952 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:35:03,952 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:35:03,953 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 03:35:04,020 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94abd3889/7330ba55cd6e4d70b0381e02a6cbdd83/FLAG00759a97d [2020-08-19 03:35:04,480 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:35:04,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 03:35:04,489 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94abd3889/7330ba55cd6e4d70b0381e02a6cbdd83/FLAG00759a97d [2020-08-19 03:35:04,822 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94abd3889/7330ba55cd6e4d70b0381e02a6cbdd83 [2020-08-19 03:35:04,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:35:04,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:35:04,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:35:04,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:35:04,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:35:04,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:35:04" (1/1) ... [2020-08-19 03:35:04,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779392b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:04, skipping insertion in model container [2020-08-19 03:35:04,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:35:04" (1/1) ... [2020-08-19 03:35:04,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:35:04,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:35:05,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:35:05,060 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:35:05,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:35:05,096 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:35:05,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05 WrapperNode [2020-08-19 03:35:05,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:35:05,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:35:05,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:35:05,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:35:05,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05" (1/1) ... [2020-08-19 03:35:05,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05" (1/1) ... [2020-08-19 03:35:05,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05" (1/1) ... [2020-08-19 03:35:05,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05" (1/1) ... [2020-08-19 03:35:05,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05" (1/1) ... [2020-08-19 03:35:05,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05" (1/1) ... [2020-08-19 03:35:05,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05" (1/1) ... [2020-08-19 03:35:05,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:35:05,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:35:05,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:35:05,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:35:05,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:35:05,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:35:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:35:05,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:35:05,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:35:05,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:35:05,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:35:05,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:35:05,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:35:05,543 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:35:05,544 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 03:35:05,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:35:05 BoogieIcfgContainer [2020-08-19 03:35:05,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:35:05,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:35:05,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:35:05,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:35:05,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:35:04" (1/3) ... [2020-08-19 03:35:05,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6ef84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:35:05, skipping insertion in model container [2020-08-19 03:35:05,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:05" (2/3) ... [2020-08-19 03:35:05,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6ef84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:35:05, skipping insertion in model container [2020-08-19 03:35:05,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:35:05" (3/3) ... [2020-08-19 03:35:05,558 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-08-19 03:35:05,572 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:35:05,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:35:05,603 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:35:05,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:35:05,638 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:35:05,639 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:35:05,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:35:05,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:35:05,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:35:05,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:35:05,639 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:35:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-19 03:35:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 03:35:05,679 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:05,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:05,682 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:05,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:05,691 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-08-19 03:35:05,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:05,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170443429] [2020-08-19 03:35:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:05,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170443429] [2020-08-19 03:35:05,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:05,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:05,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196763156] [2020-08-19 03:35:05,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:05,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:05,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:05,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:05,926 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-08-19 03:35:06,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,012 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-08-19 03:35:06,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 03:35:06,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,027 INFO L225 Difference]: With dead ends: 57 [2020-08-19 03:35:06,028 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 03:35:06,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 03:35:06,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-08-19 03:35:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 03:35:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-08-19 03:35:06,076 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-08-19 03:35:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,077 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-08-19 03:35:06,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-08-19 03:35:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 03:35:06,078 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,079 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:35:06,079 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,080 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-08-19 03:35:06,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272181192] [2020-08-19 03:35:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272181192] [2020-08-19 03:35:06,137 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517307904] [2020-08-19 03:35:06,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,140 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-08-19 03:35:06,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,169 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-08-19 03:35:06,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 03:35:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,171 INFO L225 Difference]: With dead ends: 67 [2020-08-19 03:35:06,171 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 03:35:06,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 03:35:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-08-19 03:35:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-19 03:35:06,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-08-19 03:35:06,182 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-08-19 03:35:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,182 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-08-19 03:35:06,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,183 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-08-19 03:35:06,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 03:35:06,184 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:35:06,185 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-08-19 03:35:06,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387581991] [2020-08-19 03:35:06,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387581991] [2020-08-19 03:35:06,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315154041] [2020-08-19 03:35:06,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,250 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-08-19 03:35:06,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,274 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-08-19 03:35:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 03:35:06,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,276 INFO L225 Difference]: With dead ends: 63 [2020-08-19 03:35:06,276 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 03:35:06,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 03:35:06,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-08-19 03:35:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 03:35:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-08-19 03:35:06,287 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-08-19 03:35:06,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,287 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-08-19 03:35:06,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,287 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-08-19 03:35:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 03:35:06,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:35:06,289 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-08-19 03:35:06,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090153850] [2020-08-19 03:35:06,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,334 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090153850] [2020-08-19 03:35:06,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000338624] [2020-08-19 03:35:06,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,337 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-08-19 03:35:06,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,378 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-08-19 03:35:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 03:35:06,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,380 INFO L225 Difference]: With dead ends: 76 [2020-08-19 03:35:06,381 INFO L226 Difference]: Without dead ends: 74 [2020-08-19 03:35:06,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-19 03:35:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-08-19 03:35:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 03:35:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-08-19 03:35:06,393 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-08-19 03:35:06,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,394 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-08-19 03:35:06,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,394 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-08-19 03:35:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 03:35:06,395 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:35:06,396 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-08-19 03:35:06,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409182158] [2020-08-19 03:35:06,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409182158] [2020-08-19 03:35:06,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086522791] [2020-08-19 03:35:06,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,436 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-08-19 03:35:06,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,459 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-08-19 03:35:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 03:35:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,462 INFO L225 Difference]: With dead ends: 124 [2020-08-19 03:35:06,462 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 03:35:06,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 03:35:06,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-08-19 03:35:06,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-08-19 03:35:06,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-08-19 03:35:06,474 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-08-19 03:35:06,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,474 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-08-19 03:35:06,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,475 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-08-19 03:35:06,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 03:35:06,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:35:06,476 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-08-19 03:35:06,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285657356] [2020-08-19 03:35:06,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,517 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285657356] [2020-08-19 03:35:06,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018752350] [2020-08-19 03:35:06,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,520 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-08-19 03:35:06,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,540 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-08-19 03:35:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 03:35:06,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,542 INFO L225 Difference]: With dead ends: 111 [2020-08-19 03:35:06,542 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 03:35:06,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 03:35:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-08-19 03:35:06,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 03:35:06,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-08-19 03:35:06,555 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-08-19 03:35:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,556 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-08-19 03:35:06,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,556 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-08-19 03:35:06,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 03:35:06,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:35:06,558 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,559 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-08-19 03:35:06,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668640069] [2020-08-19 03:35:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668640069] [2020-08-19 03:35:06,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749908075] [2020-08-19 03:35:06,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,591 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-08-19 03:35:06,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,611 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-08-19 03:35:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 03:35:06,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,614 INFO L225 Difference]: With dead ends: 132 [2020-08-19 03:35:06,614 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 03:35:06,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 03:35:06,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-08-19 03:35:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-19 03:35:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-08-19 03:35:06,629 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-08-19 03:35:06,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,629 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-08-19 03:35:06,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-08-19 03:35:06,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 03:35:06,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:35:06,632 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-08-19 03:35:06,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2000518962] [2020-08-19 03:35:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2000518962] [2020-08-19 03:35:06,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188356104] [2020-08-19 03:35:06,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,680 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-08-19 03:35:06,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,704 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-08-19 03:35:06,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 03:35:06,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,707 INFO L225 Difference]: With dead ends: 232 [2020-08-19 03:35:06,707 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 03:35:06,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 03:35:06,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-08-19 03:35:06,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-19 03:35:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-08-19 03:35:06,740 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-08-19 03:35:06,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,740 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-08-19 03:35:06,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-08-19 03:35:06,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 03:35:06,742 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:35:06,743 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-08-19 03:35:06,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079136148] [2020-08-19 03:35:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079136148] [2020-08-19 03:35:06,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822381074] [2020-08-19 03:35:06,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,775 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-08-19 03:35:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,794 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-08-19 03:35:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 03:35:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,796 INFO L225 Difference]: With dead ends: 204 [2020-08-19 03:35:06,797 INFO L226 Difference]: Without dead ends: 142 [2020-08-19 03:35:06,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-19 03:35:06,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-08-19 03:35:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 03:35:06,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-08-19 03:35:06,811 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-08-19 03:35:06,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,811 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-08-19 03:35:06,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,811 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-08-19 03:35:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 03:35:06,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:35:06,814 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-08-19 03:35:06,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1263960783] [2020-08-19 03:35:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1263960783] [2020-08-19 03:35:06,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56774186] [2020-08-19 03:35:06,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,852 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-08-19 03:35:06,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,871 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-08-19 03:35:06,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 03:35:06,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,874 INFO L225 Difference]: With dead ends: 236 [2020-08-19 03:35:06,874 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 03:35:06,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 03:35:06,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-08-19 03:35:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-08-19 03:35:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-08-19 03:35:06,890 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-08-19 03:35:06,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,890 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-08-19 03:35:06,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-08-19 03:35:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 03:35:06,893 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:35:06,893 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,894 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-08-19 03:35:06,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067830248] [2020-08-19 03:35:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:06,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067830248] [2020-08-19 03:35:06,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:06,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:06,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139212591] [2020-08-19 03:35:06,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:06,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:06,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:06,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,928 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-08-19 03:35:06,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:06,962 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-08-19 03:35:06,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:06,963 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 03:35:06,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:06,964 INFO L225 Difference]: With dead ends: 444 [2020-08-19 03:35:06,965 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 03:35:06,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:06,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 03:35:06,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-08-19 03:35:06,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-08-19 03:35:06,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-08-19 03:35:06,984 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-08-19 03:35:06,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:06,984 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-08-19 03:35:06,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:06,984 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-08-19 03:35:06,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:35:06,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:06,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:06,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:35:06,987 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:06,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:06,987 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-08-19 03:35:06,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:06,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895631023] [2020-08-19 03:35:06,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:07,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895631023] [2020-08-19 03:35:07,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:07,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:07,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931290413] [2020-08-19 03:35:07,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:07,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:07,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:07,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:07,016 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-08-19 03:35:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:07,036 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-08-19 03:35:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:07,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 03:35:07,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:07,039 INFO L225 Difference]: With dead ends: 384 [2020-08-19 03:35:07,039 INFO L226 Difference]: Without dead ends: 266 [2020-08-19 03:35:07,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-19 03:35:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-08-19 03:35:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-19 03:35:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-08-19 03:35:07,053 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-08-19 03:35:07,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:07,054 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-08-19 03:35:07,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-08-19 03:35:07,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:35:07,056 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:07,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:07,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:35:07,057 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:07,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:07,057 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-08-19 03:35:07,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:07,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564287115] [2020-08-19 03:35:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:07,108 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564287115] [2020-08-19 03:35:07,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:07,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:07,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118311313] [2020-08-19 03:35:07,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:07,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:07,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:07,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:07,113 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-08-19 03:35:07,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:07,148 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-08-19 03:35:07,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:07,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 03:35:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:07,152 INFO L225 Difference]: With dead ends: 426 [2020-08-19 03:35:07,152 INFO L226 Difference]: Without dead ends: 424 [2020-08-19 03:35:07,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:07,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-19 03:35:07,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-08-19 03:35:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-08-19 03:35:07,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-08-19 03:35:07,168 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-08-19 03:35:07,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:07,168 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-08-19 03:35:07,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:07,168 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-08-19 03:35:07,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:35:07,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:07,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:07,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 03:35:07,170 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:07,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:07,171 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-08-19 03:35:07,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:07,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251758138] [2020-08-19 03:35:07,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:07,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:07,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251758138] [2020-08-19 03:35:07,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:07,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:07,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185032857] [2020-08-19 03:35:07,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:07,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:07,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:07,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:07,197 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-08-19 03:35:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:07,224 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-08-19 03:35:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:07,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 03:35:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:07,225 INFO L225 Difference]: With dead ends: 856 [2020-08-19 03:35:07,225 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:35:07,228 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:07,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:35:07,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:35:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:35:07,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:35:07,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-08-19 03:35:07,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:07,229 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:35:07,229 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:35:07,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:35:07,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 03:35:07,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:35:07,255 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 03:35:07,255 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 03:35:07,255 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 03:35:07,255 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 03:35:07,255 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 03:35:07,256 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 03:35:07,256 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-08-19 03:35:07,256 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-08-19 03:35:07,256 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-08-19 03:35:07,256 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 03:35:07,256 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-08-19 03:35:07,256 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 03:35:07,257 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 03:35:07,257 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 03:35:07,257 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 03:35:07,257 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 03:35:07,257 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-08-19 03:35:07,257 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-08-19 03:35:07,257 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-08-19 03:35:07,258 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-08-19 03:35:07,258 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-08-19 03:35:07,258 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-08-19 03:35:07,258 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-08-19 03:35:07,258 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 03:35:07,258 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-08-19 03:35:07,259 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-19 03:35:07,259 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-08-19 03:35:07,259 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-08-19 03:35:07,259 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 03:35:07,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:35:07 BoogieIcfgContainer [2020-08-19 03:35:07,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:35:07,274 INFO L168 Benchmark]: Toolchain (without parser) took 2438.05 ms. Allocated memory was 141.6 MB in the beginning and 233.3 MB in the end (delta: 91.8 MB). Free memory was 103.9 MB in the beginning and 139.7 MB in the end (delta: -35.8 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:07,275 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 03:35:07,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.92 ms. Allocated memory is still 141.6 MB. Free memory was 103.7 MB in the beginning and 93.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:07,277 INFO L168 Benchmark]: Boogie Preprocessor took 116.35 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 93.6 MB in the beginning and 181.6 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:07,277 INFO L168 Benchmark]: RCFGBuilder took 334.93 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:07,278 INFO L168 Benchmark]: TraceAbstraction took 1720.35 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 139.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:07,282 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.92 ms. Allocated memory is still 141.6 MB. Free memory was 103.7 MB in the beginning and 93.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.35 ms. Allocated memory was 141.6 MB in the beginning and 203.4 MB in the end (delta: 61.9 MB). Free memory was 93.6 MB in the beginning and 181.6 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 334.93 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1720.35 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 139.7 MB in the end (delta: 27.0 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...