/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/loop-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:11:08,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:11:08,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:11:08,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:11:08,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:11:08,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:11:08,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:11:08,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:11:08,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:11:08,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:11:08,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:11:08,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:11:08,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:11:08,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:11:08,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:11:08,934 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:11:08,935 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:11:08,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:11:08,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:11:08,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:11:08,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:11:08,943 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:11:08,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:11:08,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:11:08,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:11:08,957 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 22:11:08,972 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:11:08,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:11:08,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:11:08,974 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:11:08,974 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:11:08,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:11:08,974 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:11:08,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:11:08,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:11:08,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:11:08,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:11:08,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:11:08,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:11:08,976 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:11:08,976 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:11:08,976 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:11:08,977 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:11:08,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:11:08,977 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:11:08,977 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:11:08,977 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:11:08,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:11:08,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:11:08,978 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:11:08,978 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:11:08,978 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:11:08,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:11:08,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:11:08,979 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:11:08,979 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:11:09,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:11:09,298 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:11:09,302 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:11:09,303 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:11:09,304 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:11:09,304 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2019-11-23 22:11:09,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7677fd58/692d28ab6e19487c82c13986a7aaea3e/FLAG7cb22adc1 [2019-11-23 22:11:09,815 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:11:09,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2019-11-23 22:11:09,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7677fd58/692d28ab6e19487c82c13986a7aaea3e/FLAG7cb22adc1 [2019-11-23 22:11:10,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7677fd58/692d28ab6e19487c82c13986a7aaea3e [2019-11-23 22:11:10,224 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:11:10,226 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:11:10,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:10,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:11:10,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:11:10,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3caa7f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10, skipping insertion in model container [2019-11-23 22:11:10,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:11:10,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:11:10,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:10,501 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:11:10,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:10,536 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:11:10,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10 WrapperNode [2019-11-23 22:11:10,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:10,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:10,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:11:10,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:11:10,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:10,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:11:10,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:11:10,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:11:10,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (1/1) ... [2019-11-23 22:11:10,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:11:10,690 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:11:10,690 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:11:10,690 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:11:10,691 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (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 22:11:10,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:11:10,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:11:10,988 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:11:10,988 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-23 22:11:10,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:10 BoogieIcfgContainer [2019-11-23 22:11:10,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:11:10,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:11:10,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:11:10,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:11:10,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:11:10" (1/3) ... [2019-11-23 22:11:10,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c648ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:10, skipping insertion in model container [2019-11-23 22:11:10,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:10" (2/3) ... [2019-11-23 22:11:10,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c648ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:10, skipping insertion in model container [2019-11-23 22:11:10,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:10" (3/3) ... [2019-11-23 22:11:10,998 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2019-11-23 22:11:11,010 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:11:11,017 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-23 22:11:11,028 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-23 22:11:11,060 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:11:11,061 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:11:11,061 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:11:11,061 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:11:11,061 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:11:11,061 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:11:11,062 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:11:11,062 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:11:11,076 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2019-11-23 22:11:11,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-23 22:11:11,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:11,082 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:11,082 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:11,088 INFO L82 PathProgramCache]: Analyzing trace with hash -346948471, now seen corresponding path program 1 times [2019-11-23 22:11:11,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:11,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989871522] [2019-11-23 22:11:11,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:11,281 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 22:11:11,282 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989871522] [2019-11-23 22:11:11,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:11,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:11:11,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031790382] [2019-11-23 22:11:11,291 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:11:11,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:11,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:11:11,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:11:11,329 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 4 states. [2019-11-23 22:11:11,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:11,599 INFO L93 Difference]: Finished difference Result 58 states and 83 transitions. [2019-11-23 22:11:11,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:11:11,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-23 22:11:11,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:11,613 INFO L225 Difference]: With dead ends: 58 [2019-11-23 22:11:11,613 INFO L226 Difference]: Without dead ends: 25 [2019-11-23 22:11:11,619 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 22:11:11,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-23 22:11:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2019-11-23 22:11:11,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:11:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-23 22:11:11,662 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2019-11-23 22:11:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:11,663 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-23 22:11:11,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:11:11,664 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-23 22:11:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:11:11,665 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:11,665 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:11,666 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:11,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:11,667 INFO L82 PathProgramCache]: Analyzing trace with hash 2128734748, now seen corresponding path program 1 times [2019-11-23 22:11:11,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:11,668 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933046295] [2019-11-23 22:11:11,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:11,786 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 22:11:11,787 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933046295] [2019-11-23 22:11:11,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:11,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:11:11,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201668214] [2019-11-23 22:11:11,791 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:11:11,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:11,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:11:11,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:11:11,793 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-11-23 22:11:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:11,990 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2019-11-23 22:11:11,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:11:11,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-11-23 22:11:11,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:11,991 INFO L225 Difference]: With dead ends: 37 [2019-11-23 22:11:11,991 INFO L226 Difference]: Without dead ends: 35 [2019-11-23 22:11:11,992 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:11:11,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-23 22:11:11,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 17. [2019-11-23 22:11:11,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-23 22:11:11,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2019-11-23 22:11:11,999 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2019-11-23 22:11:12,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:12,000 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2019-11-23 22:11:12,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:11:12,000 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2019-11-23 22:11:12,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:11:12,001 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:12,001 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:12,001 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:12,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:12,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1590125452, now seen corresponding path program 1 times [2019-11-23 22:11:12,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:12,002 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241289539] [2019-11-23 22:11:12,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:12,038 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 22:11:12,038 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241289539] [2019-11-23 22:11:12,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:12,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:11:12,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044045702] [2019-11-23 22:11:12,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:11:12,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:12,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:11:12,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:11:12,041 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 4 states. [2019-11-23 22:11:12,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:12,151 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2019-11-23 22:11:12,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:11:12,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-23 22:11:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:12,154 INFO L225 Difference]: With dead ends: 37 [2019-11-23 22:11:12,154 INFO L226 Difference]: Without dead ends: 35 [2019-11-23 22:11:12,154 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 22:11:12,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-23 22:11:12,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 25. [2019-11-23 22:11:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-23 22:11:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2019-11-23 22:11:12,166 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 11 [2019-11-23 22:11:12,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:12,167 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2019-11-23 22:11:12,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:11:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2019-11-23 22:11:12,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-23 22:11:12,168 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:12,168 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:12,168 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:12,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:12,169 INFO L82 PathProgramCache]: Analyzing trace with hash -520059879, now seen corresponding path program 1 times [2019-11-23 22:11:12,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:12,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683342738] [2019-11-23 22:11:12,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:12,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:12,229 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683342738] [2019-11-23 22:11:12,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:12,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-23 22:11:12,230 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715526607] [2019-11-23 22:11:12,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:11:12,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:12,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:11:12,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:11:12,232 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand 6 states. [2019-11-23 22:11:12,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:12,456 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2019-11-23 22:11:12,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-23 22:11:12,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-23 22:11:12,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:12,459 INFO L225 Difference]: With dead ends: 62 [2019-11-23 22:11:12,459 INFO L226 Difference]: Without dead ends: 60 [2019-11-23 22:11:12,460 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:11:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-23 22:11:12,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 28. [2019-11-23 22:11:12,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-23 22:11:12,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-23 22:11:12,470 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 15 [2019-11-23 22:11:12,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:12,470 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-23 22:11:12,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:11:12,470 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-23 22:11:12,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:11:12,471 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:12,471 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:12,472 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:12,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:12,472 INFO L82 PathProgramCache]: Analyzing trace with hash 744235909, now seen corresponding path program 1 times [2019-11-23 22:11:12,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:12,473 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513911688] [2019-11-23 22:11:12,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:12,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:12,553 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:12,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513911688] [2019-11-23 22:11:12,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564729923] [2019-11-23 22:11:12,554 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 22:11:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:12,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:11:12,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:11:12,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:11:12,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 10 [2019-11-23 22:11:12,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028777452] [2019-11-23 22:11:12,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:11:12,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:12,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:11:12,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:11:12,690 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 5 states. [2019-11-23 22:11:12,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:12,834 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2019-11-23 22:11:12,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:11:12,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-23 22:11:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:12,836 INFO L225 Difference]: With dead ends: 88 [2019-11-23 22:11:12,836 INFO L226 Difference]: Without dead ends: 64 [2019-11-23 22:11:12,836 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:11:12,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-23 22:11:12,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 32. [2019-11-23 22:11:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-23 22:11:12,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-11-23 22:11:12,853 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 18 [2019-11-23 22:11:12,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:12,853 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-11-23 22:11:12,853 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:11:12,853 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-11-23 22:11:12,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:11:12,854 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:12,854 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:13,057 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:13,058 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:13,059 INFO L82 PathProgramCache]: Analyzing trace with hash -834677719, now seen corresponding path program 1 times [2019-11-23 22:11:13,059 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:13,060 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840020122] [2019-11-23 22:11:13,060 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:13,123 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:13,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840020122] [2019-11-23 22:11:13,123 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908167558] [2019-11-23 22:11:13,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 22:11:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:13,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:11:13,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:13,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:13,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-11-23 22:11:13,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621810330] [2019-11-23 22:11:13,188 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:11:13,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:13,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:11:13,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:11:13,190 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 8 states. [2019-11-23 22:11:13,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:13,416 INFO L93 Difference]: Finished difference Result 65 states and 82 transitions. [2019-11-23 22:11:13,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-23 22:11:13,417 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2019-11-23 22:11:13,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:13,418 INFO L225 Difference]: With dead ends: 65 [2019-11-23 22:11:13,418 INFO L226 Difference]: Without dead ends: 41 [2019-11-23 22:11:13,419 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2019-11-23 22:11:13,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-23 22:11:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2019-11-23 22:11:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-23 22:11:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2019-11-23 22:11:13,439 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 18 [2019-11-23 22:11:13,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:13,439 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2019-11-23 22:11:13,439 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:11:13,439 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2019-11-23 22:11:13,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-23 22:11:13,440 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:13,440 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:13,641 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:13,641 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:13,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:13,642 INFO L82 PathProgramCache]: Analyzing trace with hash -417195659, now seen corresponding path program 1 times [2019-11-23 22:11:13,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:13,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447245946] [2019-11-23 22:11:13,643 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:13,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:13,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447245946] [2019-11-23 22:11:13,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064543770] [2019-11-23 22:11:13,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:13,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-23 22:11:13,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:13,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:13,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2019-11-23 22:11:13,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658478986] [2019-11-23 22:11:13,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-23 22:11:13,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:13,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-23 22:11:13,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:13,948 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 13 states. [2019-11-23 22:11:14,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:14,392 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2019-11-23 22:11:14,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-23 22:11:14,393 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2019-11-23 22:11:14,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:14,394 INFO L225 Difference]: With dead ends: 96 [2019-11-23 22:11:14,394 INFO L226 Difference]: Without dead ends: 73 [2019-11-23 22:11:14,396 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=191, Invalid=621, Unknown=0, NotChecked=0, Total=812 [2019-11-23 22:11:14,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-23 22:11:14,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 38. [2019-11-23 22:11:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-23 22:11:14,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2019-11-23 22:11:14,413 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2019-11-23 22:11:14,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:14,414 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2019-11-23 22:11:14,414 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-23 22:11:14,414 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2019-11-23 22:11:14,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-23 22:11:14,415 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:14,416 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:14,618 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:14,619 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:14,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:14,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1996109287, now seen corresponding path program 2 times [2019-11-23 22:11:14,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:14,621 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897901529] [2019-11-23 22:11:14,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:14,711 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:14,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897901529] [2019-11-23 22:11:14,711 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114471815] [2019-11-23 22:11:14,712 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:14,738 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:11:14,738 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:11:14,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-23 22:11:14,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:14,772 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:11:14,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:11:14,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2019-11-23 22:11:14,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456158849] [2019-11-23 22:11:14,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:11:14,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:14,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:11:14,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:11:14,794 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 5 states. [2019-11-23 22:11:14,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:14,879 INFO L93 Difference]: Finished difference Result 62 states and 77 transitions. [2019-11-23 22:11:14,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:11:14,879 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-23 22:11:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:14,880 INFO L225 Difference]: With dead ends: 62 [2019-11-23 22:11:14,880 INFO L226 Difference]: Without dead ends: 60 [2019-11-23 22:11:14,881 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:11:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-23 22:11:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 40. [2019-11-23 22:11:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-23 22:11:14,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-11-23 22:11:14,890 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 21 [2019-11-23 22:11:14,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:14,891 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-11-23 22:11:14,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:11:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-11-23 22:11:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-23 22:11:14,892 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:14,892 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:15,095 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:15,097 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:15,097 INFO L82 PathProgramCache]: Analyzing trace with hash 98780674, now seen corresponding path program 1 times [2019-11-23 22:11:15,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:15,098 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663262901] [2019-11-23 22:11:15,098 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:15,209 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663262901] [2019-11-23 22:11:15,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096692179] [2019-11-23 22:11:15,210 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:15,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:11:15,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-23 22:11:15,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:11:15,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2019-11-23 22:11:15,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998027365] [2019-11-23 22:11:15,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:11:15,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:15,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:11:15,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-11-23 22:11:15,279 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2019-11-23 22:11:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:15,325 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2019-11-23 22:11:15,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:11:15,325 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2019-11-23 22:11:15,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:15,326 INFO L225 Difference]: With dead ends: 57 [2019-11-23 22:11:15,326 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:11:15,327 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:15,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:11:15,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:11:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:11:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:11:15,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2019-11-23 22:11:15,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:15,328 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:11:15,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:11:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:11:15,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:11:15,534 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:15,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:11:16,194 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 26 [2019-11-23 22:11:16,337 WARN L192 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 31 [2019-11-23 22:11:16,552 WARN L192 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 30 [2019-11-23 22:11:16,558 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:11:16,558 INFO L444 ceAbstractionStarter]: For program point L19-2(lines 19 31) no Hoare annotation was computed. [2019-11-23 22:11:16,558 INFO L440 ceAbstractionStarter]: At program point L19-3(lines 19 31) the Hoare annotation is: (let ((.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse2 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0)) (.cse0 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) (.cse3 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and .cse0 .cse1 .cse2 .cse3) (let ((.cse4 (div (+ (* ULTIMATE.start_main_~n~0 (- 1)) 1) (- 2)))) (and .cse1 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~i~0) (<= (+ .cse4 1) ULTIMATE.start_main_~i~0) (<= .cse4 0) .cse2 .cse3)) (and (<= ULTIMATE.start_main_~i~0 0) .cse0 .cse3))) [2019-11-23 22:11:16,559 INFO L444 ceAbstractionStarter]: For program point L15(lines 15 18) no Hoare annotation was computed. [2019-11-23 22:11:16,559 INFO L444 ceAbstractionStarter]: For program point L15-1(lines 15 18) no Hoare annotation was computed. [2019-11-23 22:11:16,559 INFO L447 ceAbstractionStarter]: At program point L32(lines 10 34) the Hoare annotation is: true [2019-11-23 22:11:16,559 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:11:16,559 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:11:16,559 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:11:16,560 INFO L440 ceAbstractionStarter]: At program point L20-2(lines 20 30) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse5 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) (.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse2 (<= .cse0 ULTIMATE.start_main_~j~0)) (.cse3 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and (<= ULTIMATE.start_main_~i~0 0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~k~0 (+ .cse0 1)) .cse1 .cse2 .cse3) (let ((.cse4 (div (- ULTIMATE.start_main_~j~0) (- 2)))) (and (<= (+ .cse4 1) ULTIMATE.start_main_~n~0) .cse5 .cse2 (<= .cse4 0) .cse3 (<= ULTIMATE.start_main_~j~0 .cse0))) (and .cse5 .cse1 .cse2 .cse3)))) [2019-11-23 22:11:16,560 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:11:16,560 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 1 34) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= .cse0 ULTIMATE.start_main_~k~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= .cse0 ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) (< ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0))) [2019-11-23 22:11:16,561 INFO L444 ceAbstractionStarter]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:11:16,561 INFO L447 ceAbstractionStarter]: At program point L33(lines 10 34) the Hoare annotation is: true [2019-11-23 22:11:16,561 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:11:16,561 INFO L440 ceAbstractionStarter]: At program point L4-5(lines 3 8) the Hoare annotation is: (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2019-11-23 22:11:16,561 INFO L444 ceAbstractionStarter]: For program point L4-6(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:11:16,562 INFO L440 ceAbstractionStarter]: At program point L4-8(lines 1 34) the Hoare annotation is: (let ((.cse3 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse1 (<= .cse3 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and (<= ULTIMATE.start_main_~i~0 0) .cse0 .cse1 (<= ULTIMATE.start_main_~k~0 (+ ULTIMATE.start_main_~j~0 1)) .cse2 (<= ULTIMATE.start_main_~j~0 .cse3)) (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) .cse0 (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0) .cse1 .cse2)))) [2019-11-23 22:11:16,562 INFO L444 ceAbstractionStarter]: For program point L21(lines 21 29) no Hoare annotation was computed. [2019-11-23 22:11:16,562 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:11:16,562 INFO L444 ceAbstractionStarter]: For program point L5-1(line 5) no Hoare annotation was computed. [2019-11-23 22:11:16,562 INFO L444 ceAbstractionStarter]: For program point L5-2(line 5) no Hoare annotation was computed. [2019-11-23 22:11:16,563 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:11:16,576 INFO L440 ceAbstractionStarter]: At program point L22-2(lines 22 24) the Hoare annotation is: (let ((.cse1 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse0 (<= .cse1 ULTIMATE.start_main_~k~0))) (or (and .cse0 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= .cse1 ULTIMATE.start_main_~j~0) (< ULTIMATE.start_main_~j~0 ULTIMATE.start_main_~n~0)) (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0) (exists ((ULTIMATE.start_main_~j~0 Int)) (let ((.cse2 (div (- ULTIMATE.start_main_~j~0) (- 2)))) (and (<= (+ .cse2 1) ULTIMATE.start_main_~n~0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0) (<= .cse2 0)))) .cse0 (<= ULTIMATE.start_main_~j~0 .cse1))))) [2019-11-23 22:11:16,577 INFO L444 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-11-23 22:11:16,597 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,598 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,599 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,600 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:11:16 BoogieIcfgContainer [2019-11-23 22:11:16,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:11:16,605 INFO L168 Benchmark]: Toolchain (without parser) took 6378.84 ms. Allocated memory was 138.9 MB in the beginning and 289.4 MB in the end (delta: 150.5 MB). Free memory was 101.9 MB in the beginning and 262.1 MB in the end (delta: -160.2 MB). Peak memory consumption was 122.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,606 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-23 22:11:16,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.60 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 122.94 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.0 MB in the beginning and 179.7 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,609 INFO L168 Benchmark]: Boogie Preprocessor took 28.71 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 178.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,610 INFO L168 Benchmark]: RCFGBuilder took 299.79 ms. Allocated memory is still 200.8 MB. Free memory was 178.7 MB in the beginning and 164.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,611 INFO L168 Benchmark]: TraceAbstraction took 5611.61 ms. Allocated memory was 200.8 MB in the beginning and 289.4 MB in the end (delta: 88.6 MB). Free memory was 164.2 MB in the beginning and 262.1 MB in the end (delta: -97.9 MB). Peak memory consumption was 122.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:16,615 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.60 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 92.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 122.94 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 92.0 MB in the beginning and 179.7 MB in the end (delta: -87.6 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.71 ms. Allocated memory is still 200.8 MB. Free memory was 179.7 MB in the beginning and 178.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 299.79 ms. Allocated memory is still 200.8 MB. Free memory was 178.7 MB in the beginning and 164.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5611.61 ms. Allocated memory was 200.8 MB in the beginning and 289.4 MB in the end (delta: 88.6 MB). Free memory was 164.2 MB in the beginning and 262.1 MB in the end (delta: -97.9 MB). Peak memory consumption was 122.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: 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: 3]: Loop Invariant Derived loop invariant: (((k <= n && !(0 == cond)) && 2 * i <= j) && j < n) && n <= k - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ((((k <= n && !(0 == cond)) && n <= j) && n <= k) || (((((!(0 == cond) && k <= i) && (n * -1 + 1) / -2 + 1 <= i) && (n * -1 + 1) / -2 <= 0) && n <= j) && n <= k)) || ((i <= 0 && k <= n) && n <= k) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((((i <= 0 && !(0 == cond)) && 2 * i <= j) && k <= j + 1) && n <= k) && j <= 2 * i) || ((((k <= n && !(0 == cond)) && j < n) && 2 * i <= j) && n <= k) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((2 * i <= k && !(0 == cond)) && 2 * i <= j) && j < n) && k < n - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((((((i <= 0 && k <= j) && k <= 2 * i + 1) && !(0 == cond)) && 2 * i <= j) && n <= k) || (((((-j / -2 + 1 <= n && k <= n) && 2 * i <= j) && -j / -2 <= 0) && n <= k) && j <= 2 * i)) || (((k <= n && !(0 == cond)) && 2 * i <= j) && n <= k) - InvariantResult [Line: 22]: Loop Invariant [2019-11-23 22:11:16,631 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,631 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,631 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,632 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,632 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] [2019-11-23 22:11:16,632 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~j~0,QUANTIFIED] Derived loop invariant: ((((2 * i <= k && k <= n) && !(0 == cond)) && 2 * i <= j) && j < n) || (((k <= j && (\exists ULTIMATE.start_main_~j~0 : int :: (-ULTIMATE.start_main_~j~0 / -2 + 1 <= n && k <= ULTIMATE.start_main_~j~0) && -ULTIMATE.start_main_~j~0 / -2 <= 0)) && 2 * i <= k) && j <= 2 * i) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 3 error locations. Result: SAFE, OverallTime: 5.5s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, HoareTripleCheckerStatistics: 169 SDtfs, 266 SDslu, 249 SDs, 0 SdLazy, 579 SolverSat, 110 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 203 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 159 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 276 HoareAnnotationTreeSize, 8 FomulaSimplifications, 25722 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 5163 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 249 NumberOfCodeBlocks, 249 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 235 ConstructedInterpolants, 1 QuantifiedInterpolants, 14081 SizeOfPredicates, 18 NumberOfNonLiveVariables, 287 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 38/72 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...