/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:44:14,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:44:14,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:44:14,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-21 15:44:14,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:44:14,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:44:14,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:44:14,958 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:44:14,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:44:14,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:44:14,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:44:14,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:44:14,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:44:14,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:44:14,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:44:14,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:44:14,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 15:44:14,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:44:15,037 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:44:15,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:44:15,039 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:44:15,039 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:44:15,039 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:44:15,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:44:15,040 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:44:15,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:44:15,040 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:44:15,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:44:15,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:44:15,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:44:15,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:44:15,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:44:15,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:44:15,043 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:44:15,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:44:15,043 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:44:15,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:44:15,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:44:15,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:44:15,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:44:15,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:44:15,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:44:15,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:44:15,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:44:15,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:44:15,045 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:44:15,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:44:15,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:44:15,351 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:44:15,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:44:15,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:44:15,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:44:15,387 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:44:15,388 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_7.c [2020-08-21 15:44:15,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4ae1c9c/a799686574d642308705b9e48109db7a/FLAG62453ca48 [2020-08-21 15:44:15,869 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:44:15,870 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_7.c [2020-08-21 15:44:15,878 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4ae1c9c/a799686574d642308705b9e48109db7a/FLAG62453ca48 [2020-08-21 15:44:16,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bb4ae1c9c/a799686574d642308705b9e48109db7a [2020-08-21 15:44:16,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:44:16,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:44:16,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:44:16,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:44:16,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:44:16,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:44:16" (1/1) ... [2020-08-21 15:44:16,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@556c1ebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16, skipping insertion in model container [2020-08-21 15:44:16,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:44:16" (1/1) ... [2020-08-21 15:44:16,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:44:16,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:44:16,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:44:16,487 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:44:16,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:44:16,524 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:44:16,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16 WrapperNode [2020-08-21 15:44:16,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:44:16,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:44:16,525 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:44:16,525 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:44:16,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16" (1/1) ... [2020-08-21 15:44:16,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16" (1/1) ... [2020-08-21 15:44:16,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16" (1/1) ... [2020-08-21 15:44:16,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16" (1/1) ... [2020-08-21 15:44:16,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16" (1/1) ... [2020-08-21 15:44:16,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16" (1/1) ... [2020-08-21 15:44:16,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16" (1/1) ... [2020-08-21 15:44:16,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:44:16,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:44:16,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:44:16,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:44:16,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:44:16,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:44:16,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:44:16,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:44:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:44:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:44:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:44:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:44:16,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:44:16,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:44:16,966 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-21 15:44:16,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:44:16 BoogieIcfgContainer [2020-08-21 15:44:16,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:44:16,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:44:16,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:44:16,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:44:16,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:44:16" (1/3) ... [2020-08-21 15:44:16,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a90543a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:44:16, skipping insertion in model container [2020-08-21 15:44:16,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:44:16" (2/3) ... [2020-08-21 15:44:16,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a90543a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:44:16, skipping insertion in model container [2020-08-21 15:44:16,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:44:16" (3/3) ... [2020-08-21 15:44:16,980 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-08-21 15:44:16,992 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:44:16,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:44:17,018 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:44:17,054 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:44:17,055 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:44:17,055 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:44:17,055 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:44:17,055 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:44:17,055 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:44:17,056 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:44:17,056 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:44:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-21 15:44:17,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 15:44:17,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:17,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:17,089 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:17,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:17,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1819770524, now seen corresponding path program 1 times [2020-08-21 15:44:17,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:17,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920843211] [2020-08-21 15:44:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:17,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920843211] [2020-08-21 15:44:17,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:17,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:17,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800278791] [2020-08-21 15:44:17,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:17,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:17,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:17,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,342 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-21 15:44:17,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:17,402 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-08-21 15:44:17,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:17,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-21 15:44:17,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:17,418 INFO L225 Difference]: With dead ends: 69 [2020-08-21 15:44:17,418 INFO L226 Difference]: Without dead ends: 54 [2020-08-21 15:44:17,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-21 15:44:17,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2020-08-21 15:44:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-21 15:44:17,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 65 transitions. [2020-08-21 15:44:17,471 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 65 transitions. Word has length 17 [2020-08-21 15:44:17,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:17,472 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 65 transitions. [2020-08-21 15:44:17,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:17,472 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 65 transitions. [2020-08-21 15:44:17,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-21 15:44:17,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:17,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:17,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:44:17,475 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:17,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:17,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1426743514, now seen corresponding path program 1 times [2020-08-21 15:44:17,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:17,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118292965] [2020-08-21 15:44:17,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:17,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:17,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118292965] [2020-08-21 15:44:17,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:17,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:17,563 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271322873] [2020-08-21 15:44:17,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:17,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:17,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:17,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,566 INFO L87 Difference]: Start difference. First operand 38 states and 65 transitions. Second operand 3 states. [2020-08-21 15:44:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:17,593 INFO L93 Difference]: Finished difference Result 87 states and 152 transitions. [2020-08-21 15:44:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:17,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-21 15:44:17,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:17,596 INFO L225 Difference]: With dead ends: 87 [2020-08-21 15:44:17,596 INFO L226 Difference]: Without dead ends: 54 [2020-08-21 15:44:17,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-21 15:44:17,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-08-21 15:44:17,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-21 15:44:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 89 transitions. [2020-08-21 15:44:17,611 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 89 transitions. Word has length 17 [2020-08-21 15:44:17,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:17,611 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 89 transitions. [2020-08-21 15:44:17,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:17,612 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 89 transitions. [2020-08-21 15:44:17,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 15:44:17,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:17,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:17,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:44:17,614 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:17,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:17,614 INFO L82 PathProgramCache]: Analyzing trace with hash 578525748, now seen corresponding path program 1 times [2020-08-21 15:44:17,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:17,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749305758] [2020-08-21 15:44:17,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:17,667 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749305758] [2020-08-21 15:44:17,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:17,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:17,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547113706] [2020-08-21 15:44:17,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:17,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:17,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:17,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,669 INFO L87 Difference]: Start difference. First operand 52 states and 89 transitions. Second operand 3 states. [2020-08-21 15:44:17,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:17,694 INFO L93 Difference]: Finished difference Result 81 states and 135 transitions. [2020-08-21 15:44:17,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:17,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-21 15:44:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:17,696 INFO L225 Difference]: With dead ends: 81 [2020-08-21 15:44:17,696 INFO L226 Difference]: Without dead ends: 57 [2020-08-21 15:44:17,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-21 15:44:17,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-08-21 15:44:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-21 15:44:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 91 transitions. [2020-08-21 15:44:17,710 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 91 transitions. Word has length 18 [2020-08-21 15:44:17,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:17,713 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 91 transitions. [2020-08-21 15:44:17,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:17,713 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 91 transitions. [2020-08-21 15:44:17,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 15:44:17,714 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:17,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:17,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:44:17,715 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:17,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1279590326, now seen corresponding path program 1 times [2020-08-21 15:44:17,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:17,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356739611] [2020-08-21 15:44:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:17,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:17,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356739611] [2020-08-21 15:44:17,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:17,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:17,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279861073] [2020-08-21 15:44:17,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:17,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:17,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:17,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,803 INFO L87 Difference]: Start difference. First operand 55 states and 91 transitions. Second operand 3 states. [2020-08-21 15:44:17,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:17,825 INFO L93 Difference]: Finished difference Result 100 states and 168 transitions. [2020-08-21 15:44:17,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:17,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-21 15:44:17,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:17,828 INFO L225 Difference]: With dead ends: 100 [2020-08-21 15:44:17,828 INFO L226 Difference]: Without dead ends: 98 [2020-08-21 15:44:17,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-21 15:44:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2020-08-21 15:44:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-21 15:44:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 120 transitions. [2020-08-21 15:44:17,841 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 120 transitions. Word has length 18 [2020-08-21 15:44:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:17,841 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 120 transitions. [2020-08-21 15:44:17,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:17,841 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 120 transitions. [2020-08-21 15:44:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-21 15:44:17,842 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:17,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:17,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:44:17,843 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:17,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:17,844 INFO L82 PathProgramCache]: Analyzing trace with hash 886563316, now seen corresponding path program 1 times [2020-08-21 15:44:17,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:17,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569773570] [2020-08-21 15:44:17,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:17,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569773570] [2020-08-21 15:44:17,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:17,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:17,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347907052] [2020-08-21 15:44:17,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:17,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:17,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:17,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,894 INFO L87 Difference]: Start difference. First operand 72 states and 120 transitions. Second operand 3 states. [2020-08-21 15:44:17,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:17,917 INFO L93 Difference]: Finished difference Result 164 states and 278 transitions. [2020-08-21 15:44:17,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:17,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-21 15:44:17,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:17,920 INFO L225 Difference]: With dead ends: 164 [2020-08-21 15:44:17,920 INFO L226 Difference]: Without dead ends: 100 [2020-08-21 15:44:17,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-21 15:44:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-08-21 15:44:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-21 15:44:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 162 transitions. [2020-08-21 15:44:17,934 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 162 transitions. Word has length 18 [2020-08-21 15:44:17,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:17,934 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 162 transitions. [2020-08-21 15:44:17,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:17,935 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 162 transitions. [2020-08-21 15:44:17,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 15:44:17,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:17,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:17,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:44:17,936 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:17,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1012809135, now seen corresponding path program 1 times [2020-08-21 15:44:17,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:17,937 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491492408] [2020-08-21 15:44:17,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:17,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491492408] [2020-08-21 15:44:17,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:17,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:17,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941118024] [2020-08-21 15:44:17,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:17,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:17,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:17,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,975 INFO L87 Difference]: Start difference. First operand 98 states and 162 transitions. Second operand 3 states. [2020-08-21 15:44:17,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:17,995 INFO L93 Difference]: Finished difference Result 147 states and 241 transitions. [2020-08-21 15:44:17,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:17,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 15:44:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:17,998 INFO L225 Difference]: With dead ends: 147 [2020-08-21 15:44:17,998 INFO L226 Difference]: Without dead ends: 102 [2020-08-21 15:44:17,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:17,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-21 15:44:18,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-08-21 15:44:18,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-21 15:44:18,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 162 transitions. [2020-08-21 15:44:18,011 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 162 transitions. Word has length 19 [2020-08-21 15:44:18,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,012 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 162 transitions. [2020-08-21 15:44:18,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,012 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 162 transitions. [2020-08-21 15:44:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 15:44:18,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,014 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:44:18,014 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1713873713, now seen corresponding path program 1 times [2020-08-21 15:44:18,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919383135] [2020-08-21 15:44:18,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919383135] [2020-08-21 15:44:18,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440015204] [2020-08-21 15:44:18,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,071 INFO L87 Difference]: Start difference. First operand 100 states and 162 transitions. Second operand 3 states. [2020-08-21 15:44:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,104 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2020-08-21 15:44:18,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,105 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 15:44:18,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,107 INFO L225 Difference]: With dead ends: 180 [2020-08-21 15:44:18,107 INFO L226 Difference]: Without dead ends: 178 [2020-08-21 15:44:18,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-21 15:44:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 136. [2020-08-21 15:44:18,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-21 15:44:18,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 218 transitions. [2020-08-21 15:44:18,125 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 218 transitions. Word has length 19 [2020-08-21 15:44:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,127 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 218 transitions. [2020-08-21 15:44:18,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,129 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 218 transitions. [2020-08-21 15:44:18,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-21 15:44:18,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:44:18,138 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1320846703, now seen corresponding path program 1 times [2020-08-21 15:44:18,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431361572] [2020-08-21 15:44:18,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431361572] [2020-08-21 15:44:18,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041145660] [2020-08-21 15:44:18,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,221 INFO L87 Difference]: Start difference. First operand 136 states and 218 transitions. Second operand 3 states. [2020-08-21 15:44:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,253 INFO L93 Difference]: Finished difference Result 312 states and 504 transitions. [2020-08-21 15:44:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,254 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-21 15:44:18,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,255 INFO L225 Difference]: With dead ends: 312 [2020-08-21 15:44:18,256 INFO L226 Difference]: Without dead ends: 186 [2020-08-21 15:44:18,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-21 15:44:18,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-08-21 15:44:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-08-21 15:44:18,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 290 transitions. [2020-08-21 15:44:18,272 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 290 transitions. Word has length 19 [2020-08-21 15:44:18,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,273 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 290 transitions. [2020-08-21 15:44:18,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,273 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 290 transitions. [2020-08-21 15:44:18,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 15:44:18,275 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:44:18,275 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1590692585, now seen corresponding path program 1 times [2020-08-21 15:44:18,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409651929] [2020-08-21 15:44:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409651929] [2020-08-21 15:44:18,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,306 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930403399] [2020-08-21 15:44:18,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,308 INFO L87 Difference]: Start difference. First operand 184 states and 290 transitions. Second operand 3 states. [2020-08-21 15:44:18,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,326 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2020-08-21 15:44:18,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,327 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-21 15:44:18,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,328 INFO L225 Difference]: With dead ends: 276 [2020-08-21 15:44:18,329 INFO L226 Difference]: Without dead ends: 190 [2020-08-21 15:44:18,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-21 15:44:18,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-08-21 15:44:18,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-21 15:44:18,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 290 transitions. [2020-08-21 15:44:18,344 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 290 transitions. Word has length 20 [2020-08-21 15:44:18,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,345 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 290 transitions. [2020-08-21 15:44:18,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,345 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 290 transitions. [2020-08-21 15:44:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 15:44:18,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:44:18,347 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,348 INFO L82 PathProgramCache]: Analyzing trace with hash -2003210133, now seen corresponding path program 1 times [2020-08-21 15:44:18,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867533749] [2020-08-21 15:44:18,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,372 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867533749] [2020-08-21 15:44:18,372 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,372 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418720226] [2020-08-21 15:44:18,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,374 INFO L87 Difference]: Start difference. First operand 188 states and 290 transitions. Second operand 3 states. [2020-08-21 15:44:18,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,396 INFO L93 Difference]: Finished difference Result 332 states and 520 transitions. [2020-08-21 15:44:18,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-21 15:44:18,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,399 INFO L225 Difference]: With dead ends: 332 [2020-08-21 15:44:18,399 INFO L226 Difference]: Without dead ends: 330 [2020-08-21 15:44:18,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-08-21 15:44:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2020-08-21 15:44:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-21 15:44:18,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 398 transitions. [2020-08-21 15:44:18,414 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 398 transitions. Word has length 20 [2020-08-21 15:44:18,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,414 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 398 transitions. [2020-08-21 15:44:18,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,418 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 398 transitions. [2020-08-21 15:44:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-21 15:44:18,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:44:18,420 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1898730153, now seen corresponding path program 1 times [2020-08-21 15:44:18,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259339490] [2020-08-21 15:44:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259339490] [2020-08-21 15:44:18,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942127953] [2020-08-21 15:44:18,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,475 INFO L87 Difference]: Start difference. First operand 264 states and 398 transitions. Second operand 3 states. [2020-08-21 15:44:18,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,515 INFO L93 Difference]: Finished difference Result 604 states and 912 transitions. [2020-08-21 15:44:18,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-21 15:44:18,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,519 INFO L225 Difference]: With dead ends: 604 [2020-08-21 15:44:18,519 INFO L226 Difference]: Without dead ends: 354 [2020-08-21 15:44:18,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-08-21 15:44:18,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2020-08-21 15:44:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-08-21 15:44:18,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 518 transitions. [2020-08-21 15:44:18,554 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 518 transitions. Word has length 20 [2020-08-21 15:44:18,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,554 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 518 transitions. [2020-08-21 15:44:18,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,554 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 518 transitions. [2020-08-21 15:44:18,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 15:44:18,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:44:18,557 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1969756604, now seen corresponding path program 1 times [2020-08-21 15:44:18,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753285369] [2020-08-21 15:44:18,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753285369] [2020-08-21 15:44:18,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485258446] [2020-08-21 15:44:18,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,595 INFO L87 Difference]: Start difference. First operand 352 states and 518 transitions. Second operand 3 states. [2020-08-21 15:44:18,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,613 INFO L93 Difference]: Finished difference Result 528 states and 772 transitions. [2020-08-21 15:44:18,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,614 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 15:44:18,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,616 INFO L225 Difference]: With dead ends: 528 [2020-08-21 15:44:18,616 INFO L226 Difference]: Without dead ends: 362 [2020-08-21 15:44:18,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-08-21 15:44:18,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2020-08-21 15:44:18,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-08-21 15:44:18,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 518 transitions. [2020-08-21 15:44:18,629 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 518 transitions. Word has length 21 [2020-08-21 15:44:18,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,630 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 518 transitions. [2020-08-21 15:44:18,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,630 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 518 transitions. [2020-08-21 15:44:18,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 15:44:18,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,632 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:44:18,632 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1268692026, now seen corresponding path program 1 times [2020-08-21 15:44:18,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [46972821] [2020-08-21 15:44:18,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [46972821] [2020-08-21 15:44:18,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359644917] [2020-08-21 15:44:18,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,655 INFO L87 Difference]: Start difference. First operand 360 states and 518 transitions. Second operand 3 states. [2020-08-21 15:44:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,675 INFO L93 Difference]: Finished difference Result 620 states and 904 transitions. [2020-08-21 15:44:18,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,676 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 15:44:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,679 INFO L225 Difference]: With dead ends: 620 [2020-08-21 15:44:18,679 INFO L226 Difference]: Without dead ends: 618 [2020-08-21 15:44:18,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-08-21 15:44:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 520. [2020-08-21 15:44:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-08-21 15:44:18,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 726 transitions. [2020-08-21 15:44:18,697 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 726 transitions. Word has length 21 [2020-08-21 15:44:18,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,698 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 726 transitions. [2020-08-21 15:44:18,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,698 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 726 transitions. [2020-08-21 15:44:18,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-21 15:44:18,699 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,700 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 15:44:18,700 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1661719036, now seen corresponding path program 1 times [2020-08-21 15:44:18,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570577846] [2020-08-21 15:44:18,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570577846] [2020-08-21 15:44:18,723 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226663648] [2020-08-21 15:44:18,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,725 INFO L87 Difference]: Start difference. First operand 520 states and 726 transitions. Second operand 3 states. [2020-08-21 15:44:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,755 INFO L93 Difference]: Finished difference Result 1180 states and 1640 transitions. [2020-08-21 15:44:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-21 15:44:18,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,760 INFO L225 Difference]: With dead ends: 1180 [2020-08-21 15:44:18,761 INFO L226 Difference]: Without dead ends: 682 [2020-08-21 15:44:18,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-21 15:44:18,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 680. [2020-08-21 15:44:18,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-08-21 15:44:18,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 918 transitions. [2020-08-21 15:44:18,789 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 918 transitions. Word has length 21 [2020-08-21 15:44:18,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,789 INFO L479 AbstractCegarLoop]: Abstraction has 680 states and 918 transitions. [2020-08-21 15:44:18,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,790 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 918 transitions. [2020-08-21 15:44:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 15:44:18,791 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-21 15:44:18,792 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,793 INFO L82 PathProgramCache]: Analyzing trace with hash -674531426, now seen corresponding path program 1 times [2020-08-21 15:44:18,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831273029] [2020-08-21 15:44:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831273029] [2020-08-21 15:44:18,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79450424] [2020-08-21 15:44:18,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,817 INFO L87 Difference]: Start difference. First operand 680 states and 918 transitions. Second operand 3 states. [2020-08-21 15:44:18,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,844 INFO L93 Difference]: Finished difference Result 1020 states and 1368 transitions. [2020-08-21 15:44:18,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-21 15:44:18,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,849 INFO L225 Difference]: With dead ends: 1020 [2020-08-21 15:44:18,849 INFO L226 Difference]: Without dead ends: 698 [2020-08-21 15:44:18,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-08-21 15:44:18,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 696. [2020-08-21 15:44:18,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-21 15:44:18,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 918 transitions. [2020-08-21 15:44:18,878 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 918 transitions. Word has length 22 [2020-08-21 15:44:18,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,879 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 918 transitions. [2020-08-21 15:44:18,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,879 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 918 transitions. [2020-08-21 15:44:18,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 15:44:18,881 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-21 15:44:18,882 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:18,882 INFO L82 PathProgramCache]: Analyzing trace with hash 26533152, now seen corresponding path program 1 times [2020-08-21 15:44:18,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:18,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800532985] [2020-08-21 15:44:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:18,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800532985] [2020-08-21 15:44:18,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:18,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:18,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929333678] [2020-08-21 15:44:18,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:18,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:18,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:18,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,909 INFO L87 Difference]: Start difference. First operand 696 states and 918 transitions. Second operand 3 states. [2020-08-21 15:44:18,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:18,943 INFO L93 Difference]: Finished difference Result 1164 states and 1544 transitions. [2020-08-21 15:44:18,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:18,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-21 15:44:18,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:18,951 INFO L225 Difference]: With dead ends: 1164 [2020-08-21 15:44:18,951 INFO L226 Difference]: Without dead ends: 1162 [2020-08-21 15:44:18,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:18,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-08-21 15:44:18,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1032. [2020-08-21 15:44:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-08-21 15:44:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1318 transitions. [2020-08-21 15:44:18,996 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1318 transitions. Word has length 22 [2020-08-21 15:44:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:18,996 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1318 transitions. [2020-08-21 15:44:18,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1318 transitions. [2020-08-21 15:44:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-21 15:44:18,999 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:18,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:18,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-21 15:44:19,000 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:19,000 INFO L82 PathProgramCache]: Analyzing trace with hash -366493858, now seen corresponding path program 1 times [2020-08-21 15:44:19,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:19,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1479322354] [2020-08-21 15:44:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:19,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:19,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:19,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1479322354] [2020-08-21 15:44:19,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:19,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:19,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865616063] [2020-08-21 15:44:19,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:19,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:19,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:19,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:19,030 INFO L87 Difference]: Start difference. First operand 1032 states and 1318 transitions. Second operand 3 states. [2020-08-21 15:44:19,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:19,072 INFO L93 Difference]: Finished difference Result 2316 states and 2920 transitions. [2020-08-21 15:44:19,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:19,073 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-21 15:44:19,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:19,080 INFO L225 Difference]: With dead ends: 2316 [2020-08-21 15:44:19,080 INFO L226 Difference]: Without dead ends: 1322 [2020-08-21 15:44:19,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:19,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-08-21 15:44:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1320. [2020-08-21 15:44:19,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-08-21 15:44:19,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1606 transitions. [2020-08-21 15:44:19,127 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1606 transitions. Word has length 22 [2020-08-21 15:44:19,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:19,127 INFO L479 AbstractCegarLoop]: Abstraction has 1320 states and 1606 transitions. [2020-08-21 15:44:19,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:19,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1606 transitions. [2020-08-21 15:44:19,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 15:44:19,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:19,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:19,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-21 15:44:19,132 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:19,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:19,132 INFO L82 PathProgramCache]: Analyzing trace with hash 822743769, now seen corresponding path program 1 times [2020-08-21 15:44:19,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:19,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490785237] [2020-08-21 15:44:19,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:19,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:19,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:19,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490785237] [2020-08-21 15:44:19,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:19,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:19,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242317369] [2020-08-21 15:44:19,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:19,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:19,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:19,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:19,166 INFO L87 Difference]: Start difference. First operand 1320 states and 1606 transitions. Second operand 3 states. [2020-08-21 15:44:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:19,206 INFO L93 Difference]: Finished difference Result 1980 states and 2392 transitions. [2020-08-21 15:44:19,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:19,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-21 15:44:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:19,213 INFO L225 Difference]: With dead ends: 1980 [2020-08-21 15:44:19,213 INFO L226 Difference]: Without dead ends: 1354 [2020-08-21 15:44:19,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-21 15:44:19,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2020-08-21 15:44:19,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-08-21 15:44:19,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1606 transitions. [2020-08-21 15:44:19,258 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1606 transitions. Word has length 23 [2020-08-21 15:44:19,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:19,259 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1606 transitions. [2020-08-21 15:44:19,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:19,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1606 transitions. [2020-08-21 15:44:19,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 15:44:19,262 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:19,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:19,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-21 15:44:19,263 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:19,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:19,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1523808347, now seen corresponding path program 1 times [2020-08-21 15:44:19,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:19,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546249639] [2020-08-21 15:44:19,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:19,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:19,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:19,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:19,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546249639] [2020-08-21 15:44:19,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:19,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:19,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999159037] [2020-08-21 15:44:19,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:19,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:19,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:19,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:19,290 INFO L87 Difference]: Start difference. First operand 1352 states and 1606 transitions. Second operand 3 states. [2020-08-21 15:44:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:19,344 INFO L93 Difference]: Finished difference Result 2186 states and 2567 transitions. [2020-08-21 15:44:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:19,345 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-21 15:44:19,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:19,354 INFO L225 Difference]: With dead ends: 2186 [2020-08-21 15:44:19,355 INFO L226 Difference]: Without dead ends: 2184 [2020-08-21 15:44:19,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2020-08-21 15:44:19,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2056. [2020-08-21 15:44:19,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2020-08-21 15:44:19,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2374 transitions. [2020-08-21 15:44:19,417 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2374 transitions. Word has length 23 [2020-08-21 15:44:19,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:19,417 INFO L479 AbstractCegarLoop]: Abstraction has 2056 states and 2374 transitions. [2020-08-21 15:44:19,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2374 transitions. [2020-08-21 15:44:19,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-21 15:44:19,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:44:19,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:44:19,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-21 15:44:19,422 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:44:19,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:44:19,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1130781337, now seen corresponding path program 1 times [2020-08-21 15:44:19,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:44:19,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [794124889] [2020-08-21 15:44:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:44:19,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:19,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:44:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:44:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:44:19,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [794124889] [2020-08-21 15:44:19,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:44:19,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:44:19,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834896125] [2020-08-21 15:44:19,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:44:19,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:44:19,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:44:19,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:19,454 INFO L87 Difference]: Start difference. First operand 2056 states and 2374 transitions. Second operand 3 states. [2020-08-21 15:44:19,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:44:19,589 INFO L93 Difference]: Finished difference Result 4552 states and 5126 transitions. [2020-08-21 15:44:19,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:44:19,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-21 15:44:19,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:44:19,591 INFO L225 Difference]: With dead ends: 4552 [2020-08-21 15:44:19,591 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 15:44:19,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:44:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 15:44:19,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 15:44:19,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 15:44:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 15:44:19,604 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-08-21 15:44:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:44:19,604 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 15:44:19,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:44:19,605 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 15:44:19,605 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 15:44:19,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-21 15:44:19,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 15:44:19,640 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-21 15:44:19,641 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:44:19,642 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-21 15:44:19,642 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-21 15:44:19,642 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-21 15:44:19,642 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-21 15:44:19,642 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 121) no Hoare annotation was computed. [2020-08-21 15:44:19,643 INFO L268 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-08-21 15:44:19,643 INFO L268 CegarLoopResult]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,643 INFO L271 CegarLoopResult]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2020-08-21 15:44:19,643 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-08-21 15:44:19,644 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-08-21 15:44:19,644 INFO L264 CegarLoopResult]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2020-08-21 15:44:19,644 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 121) no Hoare annotation was computed. [2020-08-21 15:44:19,644 INFO L268 CegarLoopResult]: For program point L71-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,644 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2020-08-21 15:44:19,645 INFO L268 CegarLoopResult]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,645 INFO L268 CegarLoopResult]: For program point L63-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,645 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 121) the Hoare annotation is: true [2020-08-21 15:44:19,645 INFO L268 CegarLoopResult]: For program point L55-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,645 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-08-21 15:44:19,645 INFO L268 CegarLoopResult]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,646 INFO L268 CegarLoopResult]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,646 INFO L268 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-08-21 15:44:19,646 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-08-21 15:44:19,648 INFO L268 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-08-21 15:44:19,648 INFO L268 CegarLoopResult]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,648 INFO L268 CegarLoopResult]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,648 INFO L268 CegarLoopResult]: For program point L67-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,648 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-08-21 15:44:19,649 INFO L268 CegarLoopResult]: For program point L59-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,650 INFO L271 CegarLoopResult]: At program point L117(lines 5 121) the Hoare annotation is: true [2020-08-21 15:44:19,650 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-08-21 15:44:19,650 INFO L268 CegarLoopResult]: For program point L51-2(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,650 INFO L268 CegarLoopResult]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2020-08-21 15:44:19,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:44:19 BoogieIcfgContainer [2020-08-21 15:44:19,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:44:19,680 INFO L168 Benchmark]: Toolchain (without parser) took 3424.19 ms. Allocated memory was 141.6 MB in the beginning and 243.8 MB in the end (delta: 102.2 MB). Free memory was 104.3 MB in the beginning and 199.0 MB in the end (delta: -94.7 MB). Peak memory consumption was 7.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:19,688 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-21 15:44:19,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.03 ms. Allocated memory is still 141.6 MB. Free memory was 104.3 MB in the beginning and 94.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:19,693 INFO L168 Benchmark]: Boogie Preprocessor took 122.46 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 94.0 MB in the beginning and 182.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:19,693 INFO L168 Benchmark]: RCFGBuilder took 318.41 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 165.8 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:19,694 INFO L168 Benchmark]: TraceAbstraction took 2701.73 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 165.8 MB in the beginning and 199.0 MB in the end (delta: -33.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:44:19,697 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.03 ms. Allocated memory is still 141.6 MB. Free memory was 104.3 MB in the beginning and 94.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.46 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 94.0 MB in the beginning and 182.5 MB in the end (delta: -88.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 318.41 ms. Allocated memory is still 205.0 MB. Free memory was 182.5 MB in the beginning and 165.8 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2701.73 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 165.8 MB in the beginning and 199.0 MB in the end (delta: -33.2 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: 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: 30]: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.5s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1238 SDtfs, 574 SDslu, 829 SDs, 0 SdLazy, 107 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2056occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 530 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 138 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 383 ConstructedInterpolants, 0 QuantifiedInterpolants, 13856 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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...