/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 20:18:33,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 20:18:33,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 20:18:33,621 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 20:18:33,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 20:18:33,623 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 20:18:33,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 20:18:33,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 20:18:33,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 20:18:33,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 20:18:33,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 20:18:33,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 20:18:33,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 20:18:33,645 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 20:18:33,648 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 20:18:33,649 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 20:18:33,650 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 20:18:33,651 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 20:18:33,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 20:18:33,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 20:18:33,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 20:18:33,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 20:18:33,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 20:18:33,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 20:18:33,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 20:18:33,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 20:18:33,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 20:18:33,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 20:18:33,681 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 20:18:33,699 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 20:18:33,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 20:18:33,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 20:18:33,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 20:18:33,703 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 20:18:33,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 20:18:33,704 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 20:18:33,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 20:18:33,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 20:18:33,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 20:18:33,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 20:18:33,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 20:18:33,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 20:18:33,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 20:18:33,706 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 20:18:33,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 20:18:33,707 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 20:18:33,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 20:18:33,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 20:18:33,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 20:18:33,708 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 20:18:33,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 20:18:33,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 20:18:33,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 20:18:33,709 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 20:18:33,709 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 20:18:33,709 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 20:18:33,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 20:18:33,710 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 20:18:33,710 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 20:18:34,009 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 20:18:34,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 20:18:34,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 20:18:34,033 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 20:18:34,033 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 20:18:34,034 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2019-11-23 20:18:34,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ad0791e/49831c3d103e4ae3955e706a69d7a6dc/FLAG10f672d4e [2019-11-23 20:18:34,562 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 20:18:34,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2019-11-23 20:18:34,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ad0791e/49831c3d103e4ae3955e706a69d7a6dc/FLAG10f672d4e [2019-11-23 20:18:34,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71ad0791e/49831c3d103e4ae3955e706a69d7a6dc [2019-11-23 20:18:34,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 20:18:34,934 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 20:18:34,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 20:18:34,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 20:18:34,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 20:18:34,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:18:34" (1/1) ... [2019-11-23 20:18:34,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e534208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:34, skipping insertion in model container [2019-11-23 20:18:34,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:18:34" (1/1) ... [2019-11-23 20:18:34,950 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 20:18:34,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 20:18:35,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:18:35,187 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 20:18:35,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 20:18:35,224 INFO L208 MainTranslator]: Completed translation [2019-11-23 20:18:35,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35 WrapperNode [2019-11-23 20:18:35,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 20:18:35,225 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 20:18:35,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 20:18:35,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 20:18:35,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... [2019-11-23 20:18:35,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... [2019-11-23 20:18:35,350 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 20:18:35,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 20:18:35,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 20:18:35,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 20:18:35,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... [2019-11-23 20:18:35,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... [2019-11-23 20:18:35,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... [2019-11-23 20:18:35,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... [2019-11-23 20:18:35,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... [2019-11-23 20:18:35,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... [2019-11-23 20:18:35,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... [2019-11-23 20:18:35,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 20:18:35,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 20:18:35,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 20:18:35,399 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 20:18:35,400 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-11-23 20:18:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 20:18:35,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 20:18:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 20:18:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 20:18:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 20:18:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 20:18:35,836 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 20:18:35,836 INFO L284 CfgBuilder]: Removed 24 assume(true) statements. [2019-11-23 20:18:35,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:35 BoogieIcfgContainer [2019-11-23 20:18:35,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 20:18:35,838 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 20:18:35,838 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 20:18:35,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 20:18:35,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:18:34" (1/3) ... [2019-11-23 20:18:35,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58aa1bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:18:35, skipping insertion in model container [2019-11-23 20:18:35,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:18:35" (2/3) ... [2019-11-23 20:18:35,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58aa1bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:18:35, skipping insertion in model container [2019-11-23 20:18:35,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:18:35" (3/3) ... [2019-11-23 20:18:35,844 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2019-11-23 20:18:35,854 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 20:18:35,861 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-23 20:18:35,873 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-23 20:18:35,894 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 20:18:35,895 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 20:18:35,895 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 20:18:35,895 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 20:18:35,895 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 20:18:35,895 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 20:18:35,895 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 20:18:35,895 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 20:18:35,909 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2019-11-23 20:18:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 20:18:35,915 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:18:35,916 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:18:35,917 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:18:35,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:18:35,921 INFO L82 PathProgramCache]: Analyzing trace with hash 212109301, now seen corresponding path program 1 times [2019-11-23 20:18:35,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:18:35,928 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395227845] [2019-11-23 20:18:35,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:18:36,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:18:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:18:36,079 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395227845] [2019-11-23 20:18:36,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:18:36,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:18:36,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125714928] [2019-11-23 20:18:36,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:18:36,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:18:36,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:18:36,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:18:36,097 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 3 states. [2019-11-23 20:18:36,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:18:36,237 INFO L93 Difference]: Finished difference Result 137 states and 207 transitions. [2019-11-23 20:18:36,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:18:36,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-23 20:18:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:18:36,251 INFO L225 Difference]: With dead ends: 137 [2019-11-23 20:18:36,251 INFO L226 Difference]: Without dead ends: 85 [2019-11-23 20:18:36,257 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:18:36,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-23 20:18:36,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 45. [2019-11-23 20:18:36,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-23 20:18:36,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2019-11-23 20:18:36,311 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 8 [2019-11-23 20:18:36,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:18:36,312 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2019-11-23 20:18:36,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:18:36,313 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2019-11-23 20:18:36,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 20:18:36,314 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:18:36,315 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:18:36,315 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:18:36,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:18:36,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1436007159, now seen corresponding path program 1 times [2019-11-23 20:18:36,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:18:36,317 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200183478] [2019-11-23 20:18:36,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:18:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:18:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:18:36,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200183478] [2019-11-23 20:18:36,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667445942] [2019-11-23 20:18:36,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:18:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:18:36,479 INFO L255 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 20:18:36,484 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:18:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:18:36,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 20:18:36,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 20:18:36,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239395876] [2019-11-23 20:18:36,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 20:18:36,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:18:36,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 20:18:36,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:18:36,512 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 5 states. [2019-11-23 20:18:36,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:18:36,637 INFO L93 Difference]: Finished difference Result 166 states and 208 transitions. [2019-11-23 20:18:36,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:18:36,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-23 20:18:36,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:18:36,640 INFO L225 Difference]: With dead ends: 166 [2019-11-23 20:18:36,640 INFO L226 Difference]: Without dead ends: 126 [2019-11-23 20:18:36,642 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:18:36,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-11-23 20:18:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 47. [2019-11-23 20:18:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-11-23 20:18:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2019-11-23 20:18:36,652 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 10 [2019-11-23 20:18:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:18:36,652 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2019-11-23 20:18:36,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 20:18:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2019-11-23 20:18:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 20:18:36,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:18:36,653 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:18:36,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:18:36,858 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:18:36,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:18:36,859 INFO L82 PathProgramCache]: Analyzing trace with hash 780809593, now seen corresponding path program 2 times [2019-11-23 20:18:36,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:18:36,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699913006] [2019-11-23 20:18:36,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:18:36,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:18:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 20:18:36,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699913006] [2019-11-23 20:18:36,965 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024949158] [2019-11-23 20:18:36,965 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:18:37,013 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-23 20:18:37,013 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 20:18:37,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 20:18:37,017 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 20:18:37,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 20:18:37,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 20:18:37,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-11-23 20:18:37,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319965000] [2019-11-23 20:18:37,065 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:18:37,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:18:37,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:18:37,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 20:18:37,066 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 4 states. [2019-11-23 20:18:37,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:18:37,125 INFO L93 Difference]: Finished difference Result 92 states and 117 transitions. [2019-11-23 20:18:37,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:18:37,126 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-23 20:18:37,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:18:37,127 INFO L225 Difference]: With dead ends: 92 [2019-11-23 20:18:37,127 INFO L226 Difference]: Without dead ends: 51 [2019-11-23 20:18:37,128 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 20:18:37,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-23 20:18:37,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2019-11-23 20:18:37,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-23 20:18:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2019-11-23 20:18:37,135 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 12 [2019-11-23 20:18:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:18:37,135 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2019-11-23 20:18:37,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:18:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2019-11-23 20:18:37,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-23 20:18:37,136 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:18:37,137 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:18:37,340 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 20:18:37,340 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:18:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:18:37,340 INFO L82 PathProgramCache]: Analyzing trace with hash -1692621165, now seen corresponding path program 1 times [2019-11-23 20:18:37,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:18:37,341 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872793812] [2019-11-23 20:18:37,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:18:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:18:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 20:18:37,388 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872793812] [2019-11-23 20:18:37,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:18:37,388 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 20:18:37,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969782139] [2019-11-23 20:18:37,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 20:18:37,389 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:18:37,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 20:18:37,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:18:37,389 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand 3 states. [2019-11-23 20:18:37,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:18:37,431 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2019-11-23 20:18:37,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 20:18:37,431 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-23 20:18:37,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:18:37,432 INFO L225 Difference]: With dead ends: 111 [2019-11-23 20:18:37,432 INFO L226 Difference]: Without dead ends: 73 [2019-11-23 20:18:37,433 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 20:18:37,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-23 20:18:37,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 51. [2019-11-23 20:18:37,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-23 20:18:37,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2019-11-23 20:18:37,448 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 23 [2019-11-23 20:18:37,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:18:37,448 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2019-11-23 20:18:37,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 20:18:37,448 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2019-11-23 20:18:37,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-23 20:18:37,449 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:18:37,449 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:18:37,451 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:18:37,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:18:37,451 INFO L82 PathProgramCache]: Analyzing trace with hash -2112056943, now seen corresponding path program 1 times [2019-11-23 20:18:37,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:18:37,453 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105284532] [2019-11-23 20:18:37,453 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:18:37,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:18:37,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-23 20:18:37,517 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105284532] [2019-11-23 20:18:37,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:18:37,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:18:37,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806490234] [2019-11-23 20:18:37,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:18:37,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:18:37,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:18:37,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:18:37,520 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 4 states. [2019-11-23 20:18:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:18:37,556 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2019-11-23 20:18:37,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:18:37,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-11-23 20:18:37,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:18:37,558 INFO L225 Difference]: With dead ends: 106 [2019-11-23 20:18:37,558 INFO L226 Difference]: Without dead ends: 79 [2019-11-23 20:18:37,558 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:18:37,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2019-11-23 20:18:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 55. [2019-11-23 20:18:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-23 20:18:37,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2019-11-23 20:18:37,566 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 25 [2019-11-23 20:18:37,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:18:37,566 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2019-11-23 20:18:37,567 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:18:37,567 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2019-11-23 20:18:37,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-23 20:18:37,568 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 20:18:37,568 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 20:18:37,568 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 20:18:37,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 20:18:37,568 INFO L82 PathProgramCache]: Analyzing trace with hash -930350137, now seen corresponding path program 1 times [2019-11-23 20:18:37,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 20:18:37,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655749374] [2019-11-23 20:18:37,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 20:18:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 20:18:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-23 20:18:37,641 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655749374] [2019-11-23 20:18:37,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 20:18:37,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 20:18:37,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456405670] [2019-11-23 20:18:37,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 20:18:37,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 20:18:37,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 20:18:37,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 20:18:37,643 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 4 states. [2019-11-23 20:18:37,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 20:18:37,665 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2019-11-23 20:18:37,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 20:18:37,666 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-11-23 20:18:37,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 20:18:37,666 INFO L225 Difference]: With dead ends: 64 [2019-11-23 20:18:37,667 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 20:18:37,668 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 20:18:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 20:18:37,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 20:18:37,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 20:18:37,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 20:18:37,669 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-11-23 20:18:37,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 20:18:37,670 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 20:18:37,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 20:18:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 20:18:37,670 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 20:18:37,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 20:18:37,834 INFO L444 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,834 INFO L444 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,834 INFO L444 ceAbstractionStarter]: For program point L2-4(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,835 INFO L444 ceAbstractionStarter]: For program point L2-5(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,835 INFO L444 ceAbstractionStarter]: For program point L2-7(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,835 INFO L444 ceAbstractionStarter]: For program point L2-8(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,835 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,835 INFO L444 ceAbstractionStarter]: For program point L2-9(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,835 INFO L444 ceAbstractionStarter]: For program point L2-11(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,835 INFO L444 ceAbstractionStarter]: For program point L44-2(lines 44 48) no Hoare annotation was computed. [2019-11-23 20:18:37,836 INFO L444 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2019-11-23 20:18:37,836 INFO L440 ceAbstractionStarter]: At program point L44-3(lines 44 48) the Hoare annotation is: (and (= 0 ULTIMATE.start_elem_exists_~i~0) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-23 20:18:37,836 INFO L440 ceAbstractionStarter]: At program point L11-3(lines 11 13) the Hoare annotation is: (and (= 0 ULTIMATE.start_elem_exists_~i~0) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-23 20:18:37,836 INFO L444 ceAbstractionStarter]: For program point L11-4(lines 11 13) no Hoare annotation was computed. [2019-11-23 20:18:37,836 INFO L444 ceAbstractionStarter]: For program point L36-2(lines 36 39) no Hoare annotation was computed. [2019-11-23 20:18:37,837 INFO L440 ceAbstractionStarter]: At program point L36-3(lines 36 39) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-23 20:18:37,837 INFO L444 ceAbstractionStarter]: For program point L36-4(lines 36 39) no Hoare annotation was computed. [2019-11-23 20:18:37,837 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 20:18:37,837 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 20:18:37,837 INFO L444 ceAbstractionStarter]: For program point L28-2(lines 28 32) no Hoare annotation was computed. [2019-11-23 20:18:37,837 INFO L440 ceAbstractionStarter]: At program point L28-3(lines 28 32) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-23 20:18:37,837 INFO L444 ceAbstractionStarter]: For program point L28-4(lines 28 32) no Hoare annotation was computed. [2019-11-23 20:18:37,838 INFO L444 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2019-11-23 20:18:37,838 INFO L444 ceAbstractionStarter]: For program point L45-2(lines 45 47) no Hoare annotation was computed. [2019-11-23 20:18:37,838 INFO L440 ceAbstractionStarter]: At program point L45-3(lines 45 47) the Hoare annotation is: false [2019-11-23 20:18:37,838 INFO L444 ceAbstractionStarter]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2019-11-23 20:18:37,838 INFO L440 ceAbstractionStarter]: At program point L29-3(lines 29 31) the Hoare annotation is: false [2019-11-23 20:18:37,838 INFO L447 ceAbstractionStarter]: At program point L55(lines 16 56) the Hoare annotation is: true [2019-11-23 20:18:37,839 INFO L444 ceAbstractionStarter]: For program point L22-2(lines 22 25) no Hoare annotation was computed. [2019-11-23 20:18:37,839 INFO L440 ceAbstractionStarter]: At program point L22-3(lines 22 25) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-23 20:18:37,839 INFO L444 ceAbstractionStarter]: For program point L22-4(lines 22 25) no Hoare annotation was computed. [2019-11-23 20:18:37,839 INFO L440 ceAbstractionStarter]: At program point L14(lines 9 15) the Hoare annotation is: (and (= 0 ULTIMATE.start_elem_exists_~i~0) (= 0 |ULTIMATE.start_elem_exists_#res|) (= ULTIMATE.start_elem_exists_~size 0) (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-23 20:18:37,839 INFO L440 ceAbstractionStarter]: At program point L7(lines 5 8) the Hoare annotation is: false [2019-11-23 20:18:37,839 INFO L444 ceAbstractionStarter]: For program point L40-2(lines 40 49) no Hoare annotation was computed. [2019-11-23 20:18:37,840 INFO L440 ceAbstractionStarter]: At program point L40-3(lines 40 49) the Hoare annotation is: (and (= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-23 20:18:37,840 INFO L444 ceAbstractionStarter]: For program point L40-4(lines 40 49) no Hoare annotation was computed. [2019-11-23 20:18:37,840 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 20:18:37,840 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,840 INFO L444 ceAbstractionStarter]: For program point L41(lines 41 43) no Hoare annotation was computed. [2019-11-23 20:18:37,840 INFO L444 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed. [2019-11-23 20:18:37,841 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 20:18:37,841 INFO L444 ceAbstractionStarter]: For program point L50-2(lines 50 54) no Hoare annotation was computed. [2019-11-23 20:18:37,841 INFO L440 ceAbstractionStarter]: At program point L50-3(lines 50 54) the Hoare annotation is: (and (<= ULTIMATE.start_main_~n~0 0) (<= 0 ULTIMATE.start_main_~x~0)) [2019-11-23 20:18:37,841 INFO L444 ceAbstractionStarter]: For program point L50-4(lines 50 54) no Hoare annotation was computed. [2019-11-23 20:18:37,841 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,841 INFO L444 ceAbstractionStarter]: For program point L51-2(lines 51 53) no Hoare annotation was computed. [2019-11-23 20:18:37,841 INFO L440 ceAbstractionStarter]: At program point L51-3(lines 51 53) the Hoare annotation is: false [2019-11-23 20:18:37,842 INFO L444 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-23 20:18:37,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:18:37 BoogieIcfgContainer [2019-11-23 20:18:37,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 20:18:37,864 INFO L168 Benchmark]: Toolchain (without parser) took 2928.83 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 102.9 MB in the beginning and 143.5 MB in the end (delta: -40.7 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2019-11-23 20:18:37,865 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 20:18:37,866 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.05 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 91.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-11-23 20:18:37,867 INFO L168 Benchmark]: Boogie Procedure Inliner took 124.37 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 179.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-11-23 20:18:37,868 INFO L168 Benchmark]: Boogie Preprocessor took 48.66 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 178.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-11-23 20:18:37,869 INFO L168 Benchmark]: RCFGBuilder took 437.97 ms. Allocated memory is still 201.9 MB. Free memory was 178.0 MB in the beginning and 155.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2019-11-23 20:18:37,869 INFO L168 Benchmark]: TraceAbstraction took 2023.23 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 154.7 MB in the beginning and 143.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2019-11-23 20:18:37,874 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.05 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 91.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 124.37 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 179.3 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.66 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 178.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 437.97 ms. Allocated memory is still 201.9 MB. Free memory was 178.0 MB in the beginning and 155.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2023.23 ms. Allocated memory was 201.9 MB in the beginning and 235.9 MB in the end (delta: 34.1 MB). Free memory was 154.7 MB in the beginning and 143.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: n <= 0 && 0 <= x - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: n == 0 && 0 <= x - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((0 == i && size == 0) && n == 0) && 0 <= x - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: n == 0 && 0 <= x - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: ((0 == i && size == 0) && n == 0) && 0 <= x - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: n == 0 && 0 <= x - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((0 == i && 0 == \result) && size == 0) && n == 0) && 0 <= x - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: n == 0 && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 3 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 248 SDtfs, 244 SDslu, 328 SDs, 0 SdLazy, 129 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 166 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 13 PreInvPairs, 26 NumberOfFragments, 82 HoareAnnotationTreeSize, 13 FomulaSimplifications, 184 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 125 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 117 ConstructedInterpolants, 0 QuantifiedInterpolants, 3427 SizeOfPredicates, 3 NumberOfNonLiveVariables, 82 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 18/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...