/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_7.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:46:38,564 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 02:46:38,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:46:38,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:46:38,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:46:38,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:46:38,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:46:38,599 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:46:38,600 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:46:38,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-08-19 02:46:38,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:46:38,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:46:38,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:46:38,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:46:38,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:46:38,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:46:38,664 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:46:38,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:46:38,665 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:46:38,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:46:38,665 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:46:38,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:46:38,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:46:38,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:46:38,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:46:38,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:46:38,666 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:46:38,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:46:38,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:46:38,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:46:38,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:46:38,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:46:38,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:46:38,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:46:38,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:46:38,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:46:38,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:46:38,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:46:38,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:46:38,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:46:38,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:46:38,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:46:38,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:46:38,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:46:38,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:46:38,997 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:46:39,010 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:46:39,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:46:39,012 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:46:39,014 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_7.c [2020-08-19 02:46:39,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f324ddcd9/223233e248024e26a71230005468ec0a/FLAG36a9053ac [2020-08-19 02:46:39,620 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:46:39,621 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_7.c [2020-08-19 02:46:39,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f324ddcd9/223233e248024e26a71230005468ec0a/FLAG36a9053ac [2020-08-19 02:46:39,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f324ddcd9/223233e248024e26a71230005468ec0a [2020-08-19 02:46:39,965 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:46:39,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:46:39,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:46:39,968 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:46:39,972 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:46:39,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:46:39" (1/1) ... [2020-08-19 02:46:39,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71cd0836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:39, skipping insertion in model container [2020-08-19 02:46:39,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:46:39" (1/1) ... [2020-08-19 02:46:39,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:46:40,003 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:46:40,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:46:40,203 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:46:40,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:46:40,240 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:46:40,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40 WrapperNode [2020-08-19 02:46:40,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:46:40,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:46:40,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:46:40,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:46:40,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40" (1/1) ... [2020-08-19 02:46:40,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40" (1/1) ... [2020-08-19 02:46:40,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40" (1/1) ... [2020-08-19 02:46:40,341 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40" (1/1) ... [2020-08-19 02:46:40,346 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40" (1/1) ... [2020-08-19 02:46:40,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40" (1/1) ... [2020-08-19 02:46:40,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40" (1/1) ... [2020-08-19 02:46:40,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:46:40,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:46:40,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:46:40,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:46:40,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:46:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:46:40,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:46:40,418 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:46:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:46:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:46:40,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:46:40,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:46:40,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:46:40,720 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:46:40,722 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:46:40,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:46:40 BoogieIcfgContainer [2020-08-19 02:46:40,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:46:40,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:46:40,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:46:40,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:46:40,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:46:39" (1/3) ... [2020-08-19 02:46:40,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ecb81e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:46:40, skipping insertion in model container [2020-08-19 02:46:40,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:46:40" (2/3) ... [2020-08-19 02:46:40,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ecb81e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:46:40, skipping insertion in model container [2020-08-19 02:46:40,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:46:40" (3/3) ... [2020-08-19 02:46:40,747 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2020-08-19 02:46:40,760 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:46:40,768 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:46:40,782 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:46:40,807 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:46:40,808 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:46:40,808 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:46:40,808 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:46:40,808 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:46:40,808 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:46:40,808 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:46:40,809 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:46:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-08-19 02:46:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:46:40,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:40,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:40,837 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:40,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash 1819770524, now seen corresponding path program 1 times [2020-08-19 02:46:40,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:40,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119853173] [2020-08-19 02:46:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:41,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119853173] [2020-08-19 02:46:41,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:41,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:41,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980130005] [2020-08-19 02:46:41,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:41,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:41,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:41,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,092 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-08-19 02:46:41,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:41,143 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-08-19 02:46:41,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:41,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 02:46:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:41,158 INFO L225 Difference]: With dead ends: 69 [2020-08-19 02:46:41,159 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 02:46:41,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 02:46:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 38. [2020-08-19 02:46:41,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-19 02:46:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 65 transitions. [2020-08-19 02:46:41,206 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 65 transitions. Word has length 17 [2020-08-19 02:46:41,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:41,206 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 65 transitions. [2020-08-19 02:46:41,206 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:41,206 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 65 transitions. [2020-08-19 02:46:41,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 02:46:41,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:41,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:41,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:46:41,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:41,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:41,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1426743514, now seen corresponding path program 1 times [2020-08-19 02:46:41,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:41,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420796148] [2020-08-19 02:46:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:41,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420796148] [2020-08-19 02:46:41,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:41,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:41,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635859654] [2020-08-19 02:46:41,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:41,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:41,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:41,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,275 INFO L87 Difference]: Start difference. First operand 38 states and 65 transitions. Second operand 3 states. [2020-08-19 02:46:41,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:41,313 INFO L93 Difference]: Finished difference Result 87 states and 152 transitions. [2020-08-19 02:46:41,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:41,314 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 02:46:41,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:41,316 INFO L225 Difference]: With dead ends: 87 [2020-08-19 02:46:41,316 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 02:46:41,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 02:46:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-08-19 02:46:41,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-08-19 02:46:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 89 transitions. [2020-08-19 02:46:41,328 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 89 transitions. Word has length 17 [2020-08-19 02:46:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:41,329 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 89 transitions. [2020-08-19 02:46:41,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:41,329 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 89 transitions. [2020-08-19 02:46:41,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:46:41,330 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:41,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:41,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:46:41,331 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:41,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:41,332 INFO L82 PathProgramCache]: Analyzing trace with hash 578525748, now seen corresponding path program 1 times [2020-08-19 02:46:41,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:41,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936927512] [2020-08-19 02:46:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:41,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936927512] [2020-08-19 02:46:41,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:41,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:41,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008999015] [2020-08-19 02:46:41,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:41,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:41,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:41,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,415 INFO L87 Difference]: Start difference. First operand 52 states and 89 transitions. Second operand 3 states. [2020-08-19 02:46:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:41,445 INFO L93 Difference]: Finished difference Result 81 states and 135 transitions. [2020-08-19 02:46:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:41,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 02:46:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:41,448 INFO L225 Difference]: With dead ends: 81 [2020-08-19 02:46:41,448 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 02:46:41,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 02:46:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-08-19 02:46:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-19 02:46:41,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 91 transitions. [2020-08-19 02:46:41,465 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 91 transitions. Word has length 18 [2020-08-19 02:46:41,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:41,466 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 91 transitions. [2020-08-19 02:46:41,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:41,467 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 91 transitions. [2020-08-19 02:46:41,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:46:41,468 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:41,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:41,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:46:41,469 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:41,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1279590326, now seen corresponding path program 1 times [2020-08-19 02:46:41,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:41,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417458187] [2020-08-19 02:46:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:41,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:41,528 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417458187] [2020-08-19 02:46:41,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:41,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:41,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067876748] [2020-08-19 02:46:41,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:41,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:41,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:41,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,531 INFO L87 Difference]: Start difference. First operand 55 states and 91 transitions. Second operand 3 states. [2020-08-19 02:46:41,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:41,556 INFO L93 Difference]: Finished difference Result 100 states and 168 transitions. [2020-08-19 02:46:41,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:41,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 02:46:41,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:41,558 INFO L225 Difference]: With dead ends: 100 [2020-08-19 02:46:41,558 INFO L226 Difference]: Without dead ends: 98 [2020-08-19 02:46:41,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-19 02:46:41,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 72. [2020-08-19 02:46:41,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-19 02:46:41,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 120 transitions. [2020-08-19 02:46:41,570 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 120 transitions. Word has length 18 [2020-08-19 02:46:41,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:41,571 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 120 transitions. [2020-08-19 02:46:41,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:41,571 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 120 transitions. [2020-08-19 02:46:41,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 02:46:41,572 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:41,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:41,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:46:41,573 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:41,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:41,573 INFO L82 PathProgramCache]: Analyzing trace with hash 886563316, now seen corresponding path program 1 times [2020-08-19 02:46:41,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:41,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306844904] [2020-08-19 02:46:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:41,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306844904] [2020-08-19 02:46:41,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:41,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:41,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645376341] [2020-08-19 02:46:41,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:41,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:41,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:41,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,615 INFO L87 Difference]: Start difference. First operand 72 states and 120 transitions. Second operand 3 states. [2020-08-19 02:46:41,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:41,645 INFO L93 Difference]: Finished difference Result 164 states and 278 transitions. [2020-08-19 02:46:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:41,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 02:46:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:41,647 INFO L225 Difference]: With dead ends: 164 [2020-08-19 02:46:41,648 INFO L226 Difference]: Without dead ends: 100 [2020-08-19 02:46:41,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-08-19 02:46:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-08-19 02:46:41,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-19 02:46:41,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 162 transitions. [2020-08-19 02:46:41,664 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 162 transitions. Word has length 18 [2020-08-19 02:46:41,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:41,664 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 162 transitions. [2020-08-19 02:46:41,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:41,664 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 162 transitions. [2020-08-19 02:46:41,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:46:41,670 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:41,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:41,670 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:46:41,670 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:41,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:41,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1012809135, now seen corresponding path program 1 times [2020-08-19 02:46:41,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:41,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25772741] [2020-08-19 02:46:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:41,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25772741] [2020-08-19 02:46:41,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:41,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:41,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790267731] [2020-08-19 02:46:41,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:41,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:41,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:41,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,744 INFO L87 Difference]: Start difference. First operand 98 states and 162 transitions. Second operand 3 states. [2020-08-19 02:46:41,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:41,773 INFO L93 Difference]: Finished difference Result 147 states and 241 transitions. [2020-08-19 02:46:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:41,774 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 02:46:41,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:41,775 INFO L225 Difference]: With dead ends: 147 [2020-08-19 02:46:41,775 INFO L226 Difference]: Without dead ends: 102 [2020-08-19 02:46:41,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-08-19 02:46:41,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-08-19 02:46:41,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-19 02:46:41,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 162 transitions. [2020-08-19 02:46:41,798 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 162 transitions. Word has length 19 [2020-08-19 02:46:41,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:41,799 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 162 transitions. [2020-08-19 02:46:41,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:41,799 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 162 transitions. [2020-08-19 02:46:41,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:46:41,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:41,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:41,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:46:41,802 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:41,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:41,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1713873713, now seen corresponding path program 1 times [2020-08-19 02:46:41,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:41,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697710960] [2020-08-19 02:46:41,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:41,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697710960] [2020-08-19 02:46:41,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:41,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:41,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368223109] [2020-08-19 02:46:41,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:41,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:41,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:41,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,836 INFO L87 Difference]: Start difference. First operand 100 states and 162 transitions. Second operand 3 states. [2020-08-19 02:46:41,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:41,855 INFO L93 Difference]: Finished difference Result 180 states and 296 transitions. [2020-08-19 02:46:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:41,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 02:46:41,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:41,858 INFO L225 Difference]: With dead ends: 180 [2020-08-19 02:46:41,858 INFO L226 Difference]: Without dead ends: 178 [2020-08-19 02:46:41,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-19 02:46:41,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 136. [2020-08-19 02:46:41,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-19 02:46:41,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 218 transitions. [2020-08-19 02:46:41,872 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 218 transitions. Word has length 19 [2020-08-19 02:46:41,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:41,872 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 218 transitions. [2020-08-19 02:46:41,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:41,873 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 218 transitions. [2020-08-19 02:46:41,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:46:41,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:41,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:41,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:46:41,875 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:41,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:41,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1320846703, now seen corresponding path program 1 times [2020-08-19 02:46:41,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:41,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26836150] [2020-08-19 02:46:41,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:41,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:41,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26836150] [2020-08-19 02:46:41,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:41,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:41,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35861981] [2020-08-19 02:46:41,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:41,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:41,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:41,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,911 INFO L87 Difference]: Start difference. First operand 136 states and 218 transitions. Second operand 3 states. [2020-08-19 02:46:41,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:41,961 INFO L93 Difference]: Finished difference Result 312 states and 504 transitions. [2020-08-19 02:46:41,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:41,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 02:46:41,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:41,964 INFO L225 Difference]: With dead ends: 312 [2020-08-19 02:46:41,964 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 02:46:41,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:41,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 02:46:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 184. [2020-08-19 02:46:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-08-19 02:46:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 290 transitions. [2020-08-19 02:46:41,995 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 290 transitions. Word has length 19 [2020-08-19 02:46:41,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:41,995 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 290 transitions. [2020-08-19 02:46:41,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:41,996 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 290 transitions. [2020-08-19 02:46:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 02:46:41,997 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:41,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:42,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:46:42,003 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1590692585, now seen corresponding path program 1 times [2020-08-19 02:46:42,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577548893] [2020-08-19 02:46:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577548893] [2020-08-19 02:46:42,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53134681] [2020-08-19 02:46:42,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,038 INFO L87 Difference]: Start difference. First operand 184 states and 290 transitions. Second operand 3 states. [2020-08-19 02:46:42,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,056 INFO L93 Difference]: Finished difference Result 276 states and 432 transitions. [2020-08-19 02:46:42,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,056 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 02:46:42,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,058 INFO L225 Difference]: With dead ends: 276 [2020-08-19 02:46:42,058 INFO L226 Difference]: Without dead ends: 190 [2020-08-19 02:46:42,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-19 02:46:42,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 188. [2020-08-19 02:46:42,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-08-19 02:46:42,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 290 transitions. [2020-08-19 02:46:42,070 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 290 transitions. Word has length 20 [2020-08-19 02:46:42,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,070 INFO L479 AbstractCegarLoop]: Abstraction has 188 states and 290 transitions. [2020-08-19 02:46:42,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,070 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 290 transitions. [2020-08-19 02:46:42,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 02:46:42,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:42,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:46:42,072 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,073 INFO L82 PathProgramCache]: Analyzing trace with hash -2003210133, now seen corresponding path program 1 times [2020-08-19 02:46:42,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458344773] [2020-08-19 02:46:42,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458344773] [2020-08-19 02:46:42,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682198390] [2020-08-19 02:46:42,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,099 INFO L87 Difference]: Start difference. First operand 188 states and 290 transitions. Second operand 3 states. [2020-08-19 02:46:42,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,119 INFO L93 Difference]: Finished difference Result 332 states and 520 transitions. [2020-08-19 02:46:42,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 02:46:42,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,122 INFO L225 Difference]: With dead ends: 332 [2020-08-19 02:46:42,122 INFO L226 Difference]: Without dead ends: 330 [2020-08-19 02:46:42,125 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-08-19 02:46:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2020-08-19 02:46:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-19 02:46:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 398 transitions. [2020-08-19 02:46:42,147 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 398 transitions. Word has length 20 [2020-08-19 02:46:42,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,147 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 398 transitions. [2020-08-19 02:46:42,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,147 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 398 transitions. [2020-08-19 02:46:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 02:46:42,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:42,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:46:42,150 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1898730153, now seen corresponding path program 1 times [2020-08-19 02:46:42,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476740774] [2020-08-19 02:46:42,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476740774] [2020-08-19 02:46:42,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116491813] [2020-08-19 02:46:42,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,189 INFO L87 Difference]: Start difference. First operand 264 states and 398 transitions. Second operand 3 states. [2020-08-19 02:46:42,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,232 INFO L93 Difference]: Finished difference Result 604 states and 912 transitions. [2020-08-19 02:46:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 02:46:42,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,236 INFO L225 Difference]: With dead ends: 604 [2020-08-19 02:46:42,236 INFO L226 Difference]: Without dead ends: 354 [2020-08-19 02:46:42,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-08-19 02:46:42,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 352. [2020-08-19 02:46:42,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352 states. [2020-08-19 02:46:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 518 transitions. [2020-08-19 02:46:42,253 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 518 transitions. Word has length 20 [2020-08-19 02:46:42,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,253 INFO L479 AbstractCegarLoop]: Abstraction has 352 states and 518 transitions. [2020-08-19 02:46:42,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,254 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 518 transitions. [2020-08-19 02:46:42,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:46:42,255 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:42,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:46:42,256 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1969756604, now seen corresponding path program 1 times [2020-08-19 02:46:42,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375109161] [2020-08-19 02:46:42,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375109161] [2020-08-19 02:46:42,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537987465] [2020-08-19 02:46:42,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,282 INFO L87 Difference]: Start difference. First operand 352 states and 518 transitions. Second operand 3 states. [2020-08-19 02:46:42,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,301 INFO L93 Difference]: Finished difference Result 528 states and 772 transitions. [2020-08-19 02:46:42,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 02:46:42,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,304 INFO L225 Difference]: With dead ends: 528 [2020-08-19 02:46:42,304 INFO L226 Difference]: Without dead ends: 362 [2020-08-19 02:46:42,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-08-19 02:46:42,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 360. [2020-08-19 02:46:42,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 360 states. [2020-08-19 02:46:42,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 518 transitions. [2020-08-19 02:46:42,320 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 518 transitions. Word has length 21 [2020-08-19 02:46:42,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,320 INFO L479 AbstractCegarLoop]: Abstraction has 360 states and 518 transitions. [2020-08-19 02:46:42,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,320 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 518 transitions. [2020-08-19 02:46:42,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:46:42,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,321 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:42,322 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:46:42,322 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1268692026, now seen corresponding path program 1 times [2020-08-19 02:46:42,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,323 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931976328] [2020-08-19 02:46:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931976328] [2020-08-19 02:46:42,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731866863] [2020-08-19 02:46:42,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,347 INFO L87 Difference]: Start difference. First operand 360 states and 518 transitions. Second operand 3 states. [2020-08-19 02:46:42,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,370 INFO L93 Difference]: Finished difference Result 620 states and 904 transitions. [2020-08-19 02:46:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 02:46:42,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,374 INFO L225 Difference]: With dead ends: 620 [2020-08-19 02:46:42,374 INFO L226 Difference]: Without dead ends: 618 [2020-08-19 02:46:42,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-08-19 02:46:42,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 520. [2020-08-19 02:46:42,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2020-08-19 02:46:42,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 726 transitions. [2020-08-19 02:46:42,394 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 726 transitions. Word has length 21 [2020-08-19 02:46:42,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,395 INFO L479 AbstractCegarLoop]: Abstraction has 520 states and 726 transitions. [2020-08-19 02:46:42,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,395 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 726 transitions. [2020-08-19 02:46:42,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 02:46:42,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:42,397 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 02:46:42,397 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1661719036, now seen corresponding path program 1 times [2020-08-19 02:46:42,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413525287] [2020-08-19 02:46:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413525287] [2020-08-19 02:46:42,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978953082] [2020-08-19 02:46:42,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,422 INFO L87 Difference]: Start difference. First operand 520 states and 726 transitions. Second operand 3 states. [2020-08-19 02:46:42,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,461 INFO L93 Difference]: Finished difference Result 1180 states and 1640 transitions. [2020-08-19 02:46:42,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,462 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 02:46:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,466 INFO L225 Difference]: With dead ends: 1180 [2020-08-19 02:46:42,466 INFO L226 Difference]: Without dead ends: 682 [2020-08-19 02:46:42,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-08-19 02:46:42,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 680. [2020-08-19 02:46:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-08-19 02:46:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 918 transitions. [2020-08-19 02:46:42,491 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 918 transitions. Word has length 21 [2020-08-19 02:46:42,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,491 INFO L479 AbstractCegarLoop]: Abstraction has 680 states and 918 transitions. [2020-08-19 02:46:42,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 918 transitions. [2020-08-19 02:46:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 02:46:42,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:46:42,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 02:46:42,494 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash -674531426, now seen corresponding path program 1 times [2020-08-19 02:46:42,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [139269269] [2020-08-19 02:46:42,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [139269269] [2020-08-19 02:46:42,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496303518] [2020-08-19 02:46:42,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,528 INFO L87 Difference]: Start difference. First operand 680 states and 918 transitions. Second operand 3 states. [2020-08-19 02:46:42,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,552 INFO L93 Difference]: Finished difference Result 1020 states and 1368 transitions. [2020-08-19 02:46:42,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-19 02:46:42,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,556 INFO L225 Difference]: With dead ends: 1020 [2020-08-19 02:46:42,556 INFO L226 Difference]: Without dead ends: 698 [2020-08-19 02:46:42,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-08-19 02:46:42,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 696. [2020-08-19 02:46:42,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2020-08-19 02:46:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 918 transitions. [2020-08-19 02:46:42,582 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 918 transitions. Word has length 22 [2020-08-19 02:46:42,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,582 INFO L479 AbstractCegarLoop]: Abstraction has 696 states and 918 transitions. [2020-08-19 02:46:42,582 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 918 transitions. [2020-08-19 02:46:42,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 02:46:42,584 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,584 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] [2020-08-19 02:46:42,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 02:46:42,585 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,585 INFO L82 PathProgramCache]: Analyzing trace with hash 26533152, now seen corresponding path program 1 times [2020-08-19 02:46:42,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62563497] [2020-08-19 02:46:42,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62563497] [2020-08-19 02:46:42,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098284187] [2020-08-19 02:46:42,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,610 INFO L87 Difference]: Start difference. First operand 696 states and 918 transitions. Second operand 3 states. [2020-08-19 02:46:42,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,643 INFO L93 Difference]: Finished difference Result 1164 states and 1544 transitions. [2020-08-19 02:46:42,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-19 02:46:42,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,650 INFO L225 Difference]: With dead ends: 1164 [2020-08-19 02:46:42,650 INFO L226 Difference]: Without dead ends: 1162 [2020-08-19 02:46:42,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2020-08-19 02:46:42,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1032. [2020-08-19 02:46:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-08-19 02:46:42,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1318 transitions. [2020-08-19 02:46:42,689 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1318 transitions. Word has length 22 [2020-08-19 02:46:42,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,690 INFO L479 AbstractCegarLoop]: Abstraction has 1032 states and 1318 transitions. [2020-08-19 02:46:42,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1318 transitions. [2020-08-19 02:46:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 02:46:42,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,693 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] [2020-08-19 02:46:42,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 02:46:42,694 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,694 INFO L82 PathProgramCache]: Analyzing trace with hash -366493858, now seen corresponding path program 1 times [2020-08-19 02:46:42,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412006440] [2020-08-19 02:46:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412006440] [2020-08-19 02:46:42,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478599875] [2020-08-19 02:46:42,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,718 INFO L87 Difference]: Start difference. First operand 1032 states and 1318 transitions. Second operand 3 states. [2020-08-19 02:46:42,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,772 INFO L93 Difference]: Finished difference Result 2316 states and 2920 transitions. [2020-08-19 02:46:42,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,772 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-19 02:46:42,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,778 INFO L225 Difference]: With dead ends: 2316 [2020-08-19 02:46:42,779 INFO L226 Difference]: Without dead ends: 1322 [2020-08-19 02:46:42,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2020-08-19 02:46:42,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1320. [2020-08-19 02:46:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1320 states. [2020-08-19 02:46:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1606 transitions. [2020-08-19 02:46:42,825 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1606 transitions. Word has length 22 [2020-08-19 02:46:42,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,826 INFO L479 AbstractCegarLoop]: Abstraction has 1320 states and 1606 transitions. [2020-08-19 02:46:42,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1606 transitions. [2020-08-19 02:46:42,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 02:46:42,829 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,829 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] [2020-08-19 02:46:42,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 02:46:42,829 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,830 INFO L82 PathProgramCache]: Analyzing trace with hash 822743769, now seen corresponding path program 1 times [2020-08-19 02:46:42,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918224781] [2020-08-19 02:46:42,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918224781] [2020-08-19 02:46:42,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679058222] [2020-08-19 02:46:42,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,854 INFO L87 Difference]: Start difference. First operand 1320 states and 1606 transitions. Second operand 3 states. [2020-08-19 02:46:42,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:42,900 INFO L93 Difference]: Finished difference Result 1980 states and 2392 transitions. [2020-08-19 02:46:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:42,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 02:46:42,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:42,908 INFO L225 Difference]: With dead ends: 1980 [2020-08-19 02:46:42,908 INFO L226 Difference]: Without dead ends: 1354 [2020-08-19 02:46:42,910 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2020-08-19 02:46:42,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2020-08-19 02:46:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1352 states. [2020-08-19 02:46:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1606 transitions. [2020-08-19 02:46:42,958 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1606 transitions. Word has length 23 [2020-08-19 02:46:42,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:42,959 INFO L479 AbstractCegarLoop]: Abstraction has 1352 states and 1606 transitions. [2020-08-19 02:46:42,959 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:42,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1606 transitions. [2020-08-19 02:46:42,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 02:46:42,962 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:42,962 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] [2020-08-19 02:46:42,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 02:46:42,962 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:42,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:42,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1523808347, now seen corresponding path program 1 times [2020-08-19 02:46:42,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:42,963 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876131334] [2020-08-19 02:46:42,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:42,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:42,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876131334] [2020-08-19 02:46:42,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:42,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:42,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372283188] [2020-08-19 02:46:42,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:42,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:42,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:42,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:42,985 INFO L87 Difference]: Start difference. First operand 1352 states and 1606 transitions. Second operand 3 states. [2020-08-19 02:46:43,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:43,047 INFO L93 Difference]: Finished difference Result 2186 states and 2567 transitions. [2020-08-19 02:46:43,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:43,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 02:46:43,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:43,061 INFO L225 Difference]: With dead ends: 2186 [2020-08-19 02:46:43,062 INFO L226 Difference]: Without dead ends: 2184 [2020-08-19 02:46:43,063 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:43,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2020-08-19 02:46:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2056. [2020-08-19 02:46:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2056 states. [2020-08-19 02:46:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2374 transitions. [2020-08-19 02:46:43,150 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2374 transitions. Word has length 23 [2020-08-19 02:46:43,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:43,151 INFO L479 AbstractCegarLoop]: Abstraction has 2056 states and 2374 transitions. [2020-08-19 02:46:43,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:43,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2374 transitions. [2020-08-19 02:46:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 02:46:43,157 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:46:43,157 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] [2020-08-19 02:46:43,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 02:46:43,158 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:46:43,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:46:43,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1130781337, now seen corresponding path program 1 times [2020-08-19 02:46:43,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:46:43,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742801317] [2020-08-19 02:46:43,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:46:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:43,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:46:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:46:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:46:43,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742801317] [2020-08-19 02:46:43,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:46:43,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:46:43,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545137328] [2020-08-19 02:46:43,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:46:43,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:46:43,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:46:43,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:43,185 INFO L87 Difference]: Start difference. First operand 2056 states and 2374 transitions. Second operand 3 states. [2020-08-19 02:46:43,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:46:43,277 INFO L93 Difference]: Finished difference Result 4552 states and 5126 transitions. [2020-08-19 02:46:43,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:46:43,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-08-19 02:46:43,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:46:43,279 INFO L225 Difference]: With dead ends: 4552 [2020-08-19 02:46:43,279 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 02:46:43,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:46:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 02:46:43,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 02:46:43,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 02:46:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 02:46:43,289 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-08-19 02:46:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:46:43,289 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 02:46:43,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:46:43,290 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 02:46:43,290 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 02:46:43,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 02:46:43,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 02:46:43,323 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 02:46:43,323 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:46:43,323 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 02:46:43,323 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 02:46:43,324 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 02:46:43,324 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 02:46:43,324 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 121) no Hoare annotation was computed. [2020-08-19 02:46:43,324 INFO L268 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2020-08-19 02:46:43,324 INFO L268 CegarLoopResult]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,325 INFO L271 CegarLoopResult]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2020-08-19 02:46:43,325 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-08-19 02:46:43,325 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-08-19 02:46:43,325 INFO L264 CegarLoopResult]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2020-08-19 02:46:43,325 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 121) no Hoare annotation was computed. [2020-08-19 02:46:43,326 INFO L268 CegarLoopResult]: For program point L71-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,326 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2020-08-19 02:46:43,326 INFO L268 CegarLoopResult]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,326 INFO L268 CegarLoopResult]: For program point L63-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,327 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 121) the Hoare annotation is: true [2020-08-19 02:46:43,327 INFO L268 CegarLoopResult]: For program point L55-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,327 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-08-19 02:46:43,327 INFO L268 CegarLoopResult]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,327 INFO L268 CegarLoopResult]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,327 INFO L268 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-08-19 02:46:43,328 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-08-19 02:46:43,328 INFO L268 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2020-08-19 02:46:43,328 INFO L268 CegarLoopResult]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,328 INFO L268 CegarLoopResult]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,328 INFO L268 CegarLoopResult]: For program point L67-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,328 INFO L268 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2020-08-19 02:46:43,329 INFO L268 CegarLoopResult]: For program point L59-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,329 INFO L271 CegarLoopResult]: At program point L117(lines 5 121) the Hoare annotation is: true [2020-08-19 02:46:43,329 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-08-19 02:46:43,329 INFO L268 CegarLoopResult]: For program point L51-2(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,329 INFO L268 CegarLoopResult]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2020-08-19 02:46:43,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:46:43 BoogieIcfgContainer [2020-08-19 02:46:43,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:46:43,345 INFO L168 Benchmark]: Toolchain (without parser) took 3377.72 ms. Allocated memory was 137.9 MB in the beginning and 250.6 MB in the end (delta: 112.7 MB). Free memory was 101.0 MB in the beginning and 103.5 MB in the end (delta: -2.5 MB). Peak memory consumption was 110.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:43,346 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-08-19 02:46:43,347 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.73 ms. Allocated memory is still 137.9 MB. Free memory was 100.6 MB in the beginning and 90.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:43,347 INFO L168 Benchmark]: Boogie Preprocessor took 114.94 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.0 MB in the beginning and 177.6 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:43,348 INFO L168 Benchmark]: RCFGBuilder took 372.27 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 161.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:43,349 INFO L168 Benchmark]: TraceAbstraction took 2610.65 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 160.3 MB in the beginning and 103.5 MB in the end (delta: 56.8 MB). Peak memory consumption was 107.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:46:43,352 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.73 ms. Allocated memory is still 137.9 MB. Free memory was 100.6 MB in the beginning and 90.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.94 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 90.0 MB in the beginning and 177.6 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.27 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 161.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2610.65 ms. Allocated memory was 200.3 MB in the beginning and 250.6 MB in the end (delta: 50.3 MB). Free memory was 160.3 MB in the beginning and 103.5 MB in the end (delta: 56.8 MB). Peak memory consumption was 107.1 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: 2.4s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 0.9s, 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, 0.4s 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...