/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -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 00:20:42,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:20:42,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:20:42,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:20:42,410 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:20:42,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:20:42,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:20:42,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:20:42,416 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:20:42,417 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:20:42,418 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:20:42,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:20:42,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:20:42,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:20:42,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:20:42,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:20:42,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:20:42,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:20:42,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:20:42,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:20:42,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:20:42,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:20:42,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:20:42,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:20:42,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 00:20:42,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:20:42,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:20:42,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:20:42,462 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 00:20:42,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:20:42,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:20:42,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:20:42,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:20:42,507 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:20:42,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:20:42,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:20:42,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:20:42,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:20:42,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:20:42,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:20:42,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:20:42,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:20:42,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:20:42,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:20:42,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:20:42,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:20:42,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:20:42,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:20:42,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:20:42,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:20:42,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:20:42,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:20:42,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:20:42,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:20:42,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:20:42,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:20:42,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:20:42,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:20:42,513 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:20:42,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:20:42,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:20:42,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:20:42,865 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:20:42,866 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:20:42,866 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 00:20:42,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db8f90b7a/c9a84caa39944a52b2f937efabe308c7/FLAGe142459f5 [2020-08-19 00:20:43,434 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:20:43,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 00:20:43,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db8f90b7a/c9a84caa39944a52b2f937efabe308c7/FLAGe142459f5 [2020-08-19 00:20:43,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db8f90b7a/c9a84caa39944a52b2f937efabe308c7 [2020-08-19 00:20:43,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:20:43,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:20:43,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:20:43,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:20:43,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:20:43,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:20:43" (1/1) ... [2020-08-19 00:20:43,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54535c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:43, skipping insertion in model container [2020-08-19 00:20:43,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:20:43" (1/1) ... [2020-08-19 00:20:43,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:20:43,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:20:44,044 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:20:44,050 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:20:44,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:20:44,082 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:20:44,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44 WrapperNode [2020-08-19 00:20:44,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:20:44,084 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:20:44,084 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:20:44,085 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:20:44,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44" (1/1) ... [2020-08-19 00:20:44,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44" (1/1) ... [2020-08-19 00:20:44,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44" (1/1) ... [2020-08-19 00:20:44,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44" (1/1) ... [2020-08-19 00:20:44,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44" (1/1) ... [2020-08-19 00:20:44,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44" (1/1) ... [2020-08-19 00:20:44,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44" (1/1) ... [2020-08-19 00:20:44,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:20:44,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:20:44,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:20:44,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:20:44,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44" (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 00:20:44,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:20:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:20:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:20:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:20:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:20:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:20:44,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:20:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:20:44,496 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:20:44,496 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 00:20:44,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:20:44 BoogieIcfgContainer [2020-08-19 00:20:44,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:20:44,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:20:44,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:20:44,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:20:44,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:20:43" (1/3) ... [2020-08-19 00:20:44,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320c9327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:20:44, skipping insertion in model container [2020-08-19 00:20:44,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:20:44" (2/3) ... [2020-08-19 00:20:44,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@320c9327 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:20:44, skipping insertion in model container [2020-08-19 00:20:44,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:20:44" (3/3) ... [2020-08-19 00:20:44,509 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-08-19 00:20:44,520 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:20:44,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:20:44,553 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:20:44,581 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:20:44,582 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:20:44,582 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:20:44,582 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:20:44,582 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:20:44,582 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:20:44,582 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:20:44,583 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:20:44,607 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-19 00:20:44,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 00:20:44,614 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:44,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:20:44,615 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:44,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:44,622 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-08-19 00:20:44,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:44,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352787415] [2020-08-19 00:20:44,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:44,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:44,801 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 00:20:44,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352787415] [2020-08-19 00:20:44,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:44,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:44,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483778092] [2020-08-19 00:20:44,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:44,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:44,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:44,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:44,823 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-08-19 00:20:44,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:44,885 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-08-19 00:20:44,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:44,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 00:20:44,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:44,902 INFO L225 Difference]: With dead ends: 57 [2020-08-19 00:20:44,902 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 00:20:44,906 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 00:20:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 00:20:44,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-08-19 00:20:44,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 00:20:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-08-19 00:20:44,944 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-08-19 00:20:44,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:44,944 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-08-19 00:20:44,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:44,944 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-08-19 00:20:44,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 00:20:44,945 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:44,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:20:44,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:20:44,946 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:44,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:44,947 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-08-19 00:20:44,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:44,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736335428] [2020-08-19 00:20:44,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:44,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,002 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 00:20:45,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736335428] [2020-08-19 00:20:45,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951508373] [2020-08-19 00:20:45,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,006 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-08-19 00:20:45,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,039 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-08-19 00:20:45,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 00:20:45,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,041 INFO L225 Difference]: With dead ends: 67 [2020-08-19 00:20:45,041 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 00:20:45,043 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 00:20:45,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 00:20:45,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-08-19 00:20:45,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-19 00:20:45,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-08-19 00:20:45,057 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-08-19 00:20:45,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,057 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-08-19 00:20:45,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-08-19 00:20:45,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 00:20:45,059 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:20:45,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:20:45,060 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-08-19 00:20:45,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316742689] [2020-08-19 00:20:45,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,126 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 00:20:45,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316742689] [2020-08-19 00:20:45,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909866421] [2020-08-19 00:20:45,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,129 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-08-19 00:20:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,155 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-08-19 00:20:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 00:20:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,157 INFO L225 Difference]: With dead ends: 63 [2020-08-19 00:20:45,158 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 00:20:45,158 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 00:20:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 00:20:45,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-08-19 00:20:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 00:20:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-08-19 00:20:45,168 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-08-19 00:20:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,169 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-08-19 00:20:45,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-08-19 00:20:45,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 00:20:45,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:20:45,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:20:45,173 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-08-19 00:20:45,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787110652] [2020-08-19 00:20:45,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,226 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 00:20:45,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787110652] [2020-08-19 00:20:45,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140100902] [2020-08-19 00:20:45,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,228 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,229 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-08-19 00:20:45,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,250 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-08-19 00:20:45,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 00:20:45,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,253 INFO L225 Difference]: With dead ends: 76 [2020-08-19 00:20:45,253 INFO L226 Difference]: Without dead ends: 74 [2020-08-19 00:20:45,254 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 00:20:45,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-19 00:20:45,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-08-19 00:20:45,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 00:20:45,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-08-19 00:20:45,264 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-08-19 00:20:45,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,268 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-08-19 00:20:45,268 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,268 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-08-19 00:20:45,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 00:20:45,269 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:20:45,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:20:45,270 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-08-19 00:20:45,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827033966] [2020-08-19 00:20:45,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,353 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 00:20:45,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827033966] [2020-08-19 00:20:45,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126388037] [2020-08-19 00:20:45,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,356 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-08-19 00:20:45,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,394 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-08-19 00:20:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 00:20:45,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,396 INFO L225 Difference]: With dead ends: 124 [2020-08-19 00:20:45,396 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 00:20:45,397 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 00:20:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 00:20:45,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-08-19 00:20:45,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-08-19 00:20:45,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-08-19 00:20:45,407 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-08-19 00:20:45,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,408 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-08-19 00:20:45,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,408 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-08-19 00:20:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 00:20:45,409 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,409 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 00:20:45,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:20:45,410 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-08-19 00:20:45,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182991584] [2020-08-19 00:20:45,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,437 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 00:20:45,438 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182991584] [2020-08-19 00:20:45,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553881777] [2020-08-19 00:20:45,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,440 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-08-19 00:20:45,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,457 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-08-19 00:20:45,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 00:20:45,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,459 INFO L225 Difference]: With dead ends: 111 [2020-08-19 00:20:45,459 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 00:20:45,460 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 00:20:45,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 00:20:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-08-19 00:20:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 00:20:45,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-08-19 00:20:45,475 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-08-19 00:20:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,475 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-08-19 00:20:45,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,476 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-08-19 00:20:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 00:20:45,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,478 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 00:20:45,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:20:45,479 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,479 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-08-19 00:20:45,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,480 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217064328] [2020-08-19 00:20:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,509 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 00:20:45,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217064328] [2020-08-19 00:20:45,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746315755] [2020-08-19 00:20:45,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,512 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-08-19 00:20:45,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,534 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-08-19 00:20:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 00:20:45,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,537 INFO L225 Difference]: With dead ends: 132 [2020-08-19 00:20:45,537 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 00:20:45,538 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 00:20:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 00:20:45,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-08-19 00:20:45,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-19 00:20:45,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-08-19 00:20:45,552 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-08-19 00:20:45,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,552 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-08-19 00:20:45,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,553 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-08-19 00:20:45,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 00:20:45,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:20:45,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:20:45,554 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-08-19 00:20:45,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051623271] [2020-08-19 00:20:45,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:20:45,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051623271] [2020-08-19 00:20:45,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503768988] [2020-08-19 00:20:45,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,597 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-08-19 00:20:45,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,638 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-08-19 00:20:45,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 00:20:45,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,641 INFO L225 Difference]: With dead ends: 232 [2020-08-19 00:20:45,641 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 00:20:45,643 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 00:20:45,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 00:20:45,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-08-19 00:20:45,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-19 00:20:45,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-08-19 00:20:45,682 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-08-19 00:20:45,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,683 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-08-19 00:20:45,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-08-19 00:20:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 00:20:45,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,686 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 00:20:45,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:20:45,687 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-08-19 00:20:45,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109225763] [2020-08-19 00:20:45,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,757 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 00:20:45,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109225763] [2020-08-19 00:20:45,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146690689] [2020-08-19 00:20:45,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,761 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-08-19 00:20:45,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,793 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-08-19 00:20:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 00:20:45,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,795 INFO L225 Difference]: With dead ends: 204 [2020-08-19 00:20:45,795 INFO L226 Difference]: Without dead ends: 142 [2020-08-19 00:20:45,796 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 00:20:45,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-19 00:20:45,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-08-19 00:20:45,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 00:20:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-08-19 00:20:45,807 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-08-19 00:20:45,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,807 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-08-19 00:20:45,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,808 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-08-19 00:20:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 00:20:45,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,809 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 00:20:45,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:20:45,810 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-08-19 00:20:45,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618322857] [2020-08-19 00:20:45,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,835 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 00:20:45,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618322857] [2020-08-19 00:20:45,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215596649] [2020-08-19 00:20:45,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,837 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-08-19 00:20:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,856 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-08-19 00:20:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 00:20:45,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,858 INFO L225 Difference]: With dead ends: 236 [2020-08-19 00:20:45,858 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 00:20:45,859 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 00:20:45,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 00:20:45,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-08-19 00:20:45,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-08-19 00:20:45,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-08-19 00:20:45,872 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-08-19 00:20:45,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,873 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-08-19 00:20:45,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,873 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-08-19 00:20:45,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 00:20:45,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,874 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 00:20:45,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:20:45,875 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,875 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-08-19 00:20:45,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744066626] [2020-08-19 00:20:45,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,899 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 00:20:45,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744066626] [2020-08-19 00:20:45,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726164276] [2020-08-19 00:20:45,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,902 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-08-19 00:20:45,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,929 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-08-19 00:20:45,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:45,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 00:20:45,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:45,931 INFO L225 Difference]: With dead ends: 444 [2020-08-19 00:20:45,931 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 00:20:45,932 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 00:20:45,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 00:20:45,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-08-19 00:20:45,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-08-19 00:20:45,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-08-19 00:20:45,947 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-08-19 00:20:45,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:45,947 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-08-19 00:20:45,948 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:45,948 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-08-19 00:20:45,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 00:20:45,949 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:45,949 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 00:20:45,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:20:45,950 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:45,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:45,950 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-08-19 00:20:45,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:45,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602411124] [2020-08-19 00:20:45,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:45,977 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 00:20:45,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602411124] [2020-08-19 00:20:45,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:45,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:45,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383525630] [2020-08-19 00:20:45,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:45,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:45,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:45,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:45,979 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-08-19 00:20:45,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:45,999 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-08-19 00:20:46,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:46,000 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 00:20:46,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:46,002 INFO L225 Difference]: With dead ends: 384 [2020-08-19 00:20:46,002 INFO L226 Difference]: Without dead ends: 266 [2020-08-19 00:20:46,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-19 00:20:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-08-19 00:20:46,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-19 00:20:46,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-08-19 00:20:46,015 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-08-19 00:20:46,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:46,016 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-08-19 00:20:46,016 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:46,016 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-08-19 00:20:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 00:20:46,017 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:46,018 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 00:20:46,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 00:20:46,018 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:46,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:46,018 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-08-19 00:20:46,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:46,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659370582] [2020-08-19 00:20:46,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:46,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:46,041 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 00:20:46,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659370582] [2020-08-19 00:20:46,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:46,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:46,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771597065] [2020-08-19 00:20:46,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:46,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:46,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:46,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:46,044 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-08-19 00:20:46,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:46,066 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-08-19 00:20:46,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:46,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 00:20:46,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:46,070 INFO L225 Difference]: With dead ends: 426 [2020-08-19 00:20:46,070 INFO L226 Difference]: Without dead ends: 424 [2020-08-19 00:20:46,071 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 00:20:46,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-19 00:20:46,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-08-19 00:20:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-08-19 00:20:46,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-08-19 00:20:46,086 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-08-19 00:20:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:46,086 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-08-19 00:20:46,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:46,087 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-08-19 00:20:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 00:20:46,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:20:46,088 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 00:20:46,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 00:20:46,089 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:20:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:20:46,089 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-08-19 00:20:46,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:20:46,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246068683] [2020-08-19 00:20:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:20:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:20:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:20:46,109 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 00:20:46,110 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246068683] [2020-08-19 00:20:46,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:20:46,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:20:46,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531184348] [2020-08-19 00:20:46,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:20:46,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:20:46,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:20:46,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:20:46,111 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-08-19 00:20:46,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:20:46,138 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-08-19 00:20:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:20:46,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 00:20:46,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:20:46,139 INFO L225 Difference]: With dead ends: 856 [2020-08-19 00:20:46,140 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:20:46,142 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 00:20:46,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:20:46,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:20:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:20:46,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:20:46,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-08-19 00:20:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:20:46,143 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:20:46,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:20:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:20:46,144 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:20:46,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 00:20:46,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:20:46,173 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 00:20:46,173 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:20:46,173 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 00:20:46,173 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 00:20:46,173 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 00:20:46,173 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 00:20:46,173 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-08-19 00:20:46,174 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-08-19 00:20:46,174 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-08-19 00:20:46,174 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 00:20:46,174 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-08-19 00:20:46,174 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 00:20:46,174 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 00:20:46,174 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 00:20:46,175 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 00:20:46,175 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 00:20:46,175 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-08-19 00:20:46,175 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-08-19 00:20:46,175 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-08-19 00:20:46,175 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-08-19 00:20:46,175 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-08-19 00:20:46,176 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-08-19 00:20:46,176 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-08-19 00:20:46,176 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 00:20:46,176 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-08-19 00:20:46,176 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-19 00:20:46,176 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-08-19 00:20:46,177 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-08-19 00:20:46,177 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 00:20:46,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 12:20:46 BoogieIcfgContainer [2020-08-19 00:20:46,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 00:20:46,191 INFO L168 Benchmark]: Toolchain (without parser) took 2399.28 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 103.2 MB in the beginning and 140.6 MB in the end (delta: -37.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:20:46,192 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 00:20:46,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.93 ms. Allocated memory is still 141.0 MB. Free memory was 103.0 MB in the beginning and 92.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-19 00:20:46,194 INFO L168 Benchmark]: Boogie Preprocessor took 109.14 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 183.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-08-19 00:20:46,195 INFO L168 Benchmark]: RCFGBuilder took 306.60 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 167.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-08-19 00:20:46,195 INFO L168 Benchmark]: TraceAbstraction took 1687.02 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 167.1 MB in the beginning and 140.6 MB in the end (delta: 26.5 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2020-08-19 00:20:46,199 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.93 ms. Allocated memory is still 141.0 MB. Free memory was 103.0 MB in the beginning and 92.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.14 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 183.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 306.60 ms. Allocated memory is still 203.9 MB. Free memory was 182.6 MB in the beginning and 167.8 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1687.02 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 167.1 MB in the beginning and 140.6 MB in the end (delta: 26.5 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...