/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/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:11:06,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:11:06,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:11:06,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:11:06,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:11:06,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:11:06,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:11:06,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:11:06,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:11:06,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:11:06,939 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:11:06,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:11:06,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:11:06,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:11:06,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:11:06,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:11:06,951 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:11:06,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:11:06,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:11:06,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:11:06,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:11:06,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:11:06,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:11:06,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:11:06,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:11:06,989 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 22:11:07,009 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:11:07,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:11:07,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:11:07,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:11:07,012 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:11:07,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:11:07,013 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:11:07,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:11:07,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:11:07,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:11:07,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:11:07,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:11:07,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:11:07,015 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:11:07,016 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:11:07,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:11:07,016 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:11:07,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:11:07,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:11:07,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:11:07,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:11:07,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:11:07,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:11:07,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:11:07,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:11:07,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:11:07,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:11:07,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:11:07,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:11:07,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:11:07,265 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:11:07,282 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:11:07,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:11:07,287 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:11:07,287 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:11:07,288 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2019-11-23 22:11:07,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b72b1dac/23346207d2be45dc8c5c8e7d1b8935ef/FLAGad6c6ff95 [2019-11-23 22:11:07,808 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:11:07,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2019-11-23 22:11:07,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b72b1dac/23346207d2be45dc8c5c8e7d1b8935ef/FLAGad6c6ff95 [2019-11-23 22:11:08,193 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b72b1dac/23346207d2be45dc8c5c8e7d1b8935ef [2019-11-23 22:11:08,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:11:08,203 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:11:08,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:08,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:11:08,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:11:08,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50d4c668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08, skipping insertion in model container [2019-11-23 22:11:08,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:11:08,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:11:08,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:08,445 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:11:08,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:11:08,481 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:11:08,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08 WrapperNode [2019-11-23 22:11:08,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:11:08,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:08,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:11:08,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:11:08,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,498 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:11:08,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:11:08,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:11:08,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:11:08,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,655 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (1/1) ... [2019-11-23 22:11:08,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:11:08,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:11:08,682 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:11:08,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:11:08,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (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 22:11:08,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:11:08,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:11:08,976 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:11:08,976 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-23 22:11:08,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:08 BoogieIcfgContainer [2019-11-23 22:11:08,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:11:08,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:11:08,979 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:11:08,982 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:11:08,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:11:08" (1/3) ... [2019-11-23 22:11:08,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217a145c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:08, skipping insertion in model container [2019-11-23 22:11:08,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:11:08" (2/3) ... [2019-11-23 22:11:08,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@217a145c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:11:08, skipping insertion in model container [2019-11-23 22:11:08,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:11:08" (3/3) ... [2019-11-23 22:11:08,996 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2019-11-23 22:11:09,032 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:11:09,050 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:11:09,078 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:11:09,116 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:11:09,116 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:11:09,116 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:11:09,116 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:11:09,117 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:11:09,117 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:11:09,117 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:11:09,117 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:11:09,130 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-23 22:11:09,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:11:09,135 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:09,136 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:09,136 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:09,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1461315706, now seen corresponding path program 1 times [2019-11-23 22:11:09,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:09,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371532334] [2019-11-23 22:11:09,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:09,261 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 22:11:09,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371532334] [2019-11-23 22:11:09,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:09,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:11:09,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901622872] [2019-11-23 22:11:09,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 22:11:09,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:09,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 22:11:09,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:11:09,287 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2019-11-23 22:11:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:09,308 INFO L93 Difference]: Finished difference Result 26 states and 36 transitions. [2019-11-23 22:11:09,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 22:11:09,309 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-23 22:11:09,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:09,318 INFO L225 Difference]: With dead ends: 26 [2019-11-23 22:11:09,318 INFO L226 Difference]: Without dead ends: 12 [2019-11-23 22:11:09,321 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:11:09,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-23 22:11:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-23 22:11:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-23 22:11:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2019-11-23 22:11:09,355 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 7 [2019-11-23 22:11:09,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:09,356 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2019-11-23 22:11:09,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 22:11:09,356 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2019-11-23 22:11:09,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:11:09,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:09,357 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:09,358 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:09,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:09,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1479786126, now seen corresponding path program 1 times [2019-11-23 22:11:09,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:09,359 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99660031] [2019-11-23 22:11:09,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:09,438 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 22:11:09,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99660031] [2019-11-23 22:11:09,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:11:09,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:11:09,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600456002] [2019-11-23 22:11:09,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:11:09,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:09,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:11:09,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:11:09,444 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand 5 states. [2019-11-23 22:11:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:09,525 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2019-11-23 22:11:09,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:11:09,526 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-23 22:11:09,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:09,526 INFO L225 Difference]: With dead ends: 20 [2019-11-23 22:11:09,527 INFO L226 Difference]: Without dead ends: 13 [2019-11-23 22:11:09,528 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:11:09,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-23 22:11:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-23 22:11:09,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-23 22:11:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2019-11-23 22:11:09,532 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 7 [2019-11-23 22:11:09,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:09,533 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2019-11-23 22:11:09,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:11:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2019-11-23 22:11:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 22:11:09,534 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:09,534 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:09,534 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:09,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:09,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1660828652, now seen corresponding path program 1 times [2019-11-23 22:11:09,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:09,535 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290854773] [2019-11-23 22:11:09,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:09,614 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 22:11:09,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290854773] [2019-11-23 22:11:09,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023947554] [2019-11-23 22:11:09,616 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 22:11:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:09,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:11:09,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:09,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:09,738 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 22:11:09,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:09,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-23 22:11:09,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642341525] [2019-11-23 22:11:09,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:11:09,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:09,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:11:09,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:11:09,741 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand 8 states. [2019-11-23 22:11:09,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:09,928 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2019-11-23 22:11:09,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:11:09,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-23 22:11:09,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:09,930 INFO L225 Difference]: With dead ends: 32 [2019-11-23 22:11:09,931 INFO L226 Difference]: Without dead ends: 30 [2019-11-23 22:11:09,932 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-23 22:11:09,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 19. [2019-11-23 22:11:09,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 22:11:09,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-11-23 22:11:09,938 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-11-23 22:11:09,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:09,938 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-11-23 22:11:09,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:11:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-11-23 22:11:09,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:11:09,939 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:09,940 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:10,142 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:10,143 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:10,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:10,145 INFO L82 PathProgramCache]: Analyzing trace with hash 2129936810, now seen corresponding path program 1 times [2019-11-23 22:11:10,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:10,146 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836349052] [2019-11-23 22:11:10,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:10,203 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 22:11:10,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836349052] [2019-11-23 22:11:10,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727557111] [2019-11-23 22:11:10,204 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 22:11:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:10,250 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:11:10,251 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:10,274 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:10,298 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 22:11:10,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:10,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-23 22:11:10,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027253376] [2019-11-23 22:11:10,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:11:10,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:10,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:11:10,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:11:10,301 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 8 states. [2019-11-23 22:11:10,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:10,485 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2019-11-23 22:11:10,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:11:10,486 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-23 22:11:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:10,488 INFO L225 Difference]: With dead ends: 38 [2019-11-23 22:11:10,488 INFO L226 Difference]: Without dead ends: 36 [2019-11-23 22:11:10,490 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:10,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-23 22:11:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 25. [2019-11-23 22:11:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-23 22:11:10,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2019-11-23 22:11:10,502 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 11 [2019-11-23 22:11:10,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:10,503 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2019-11-23 22:11:10,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:11:10,503 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2019-11-23 22:11:10,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:11:10,503 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:10,504 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:10,704 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:10,705 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:10,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:10,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2107772184, now seen corresponding path program 1 times [2019-11-23 22:11:10,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:10,707 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053168257] [2019-11-23 22:11:10,707 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:10,761 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 22:11:10,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053168257] [2019-11-23 22:11:10,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091789077] [2019-11-23 22:11:10,762 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) [2019-11-23 22:11:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:10,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-23 22:11:10,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:10,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:11:10,829 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 22:11:10,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:11:10,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2019-11-23 22:11:10,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50487844] [2019-11-23 22:11:10,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:11:10,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:10,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:11:10,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:11:10,832 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand 8 states. [2019-11-23 22:11:10,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:10,969 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2019-11-23 22:11:10,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-23 22:11:10,970 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2019-11-23 22:11:10,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:10,971 INFO L225 Difference]: With dead ends: 42 [2019-11-23 22:11:10,971 INFO L226 Difference]: Without dead ends: 40 [2019-11-23 22:11:10,973 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:10,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-11-23 22:11:10,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 30. [2019-11-23 22:11:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-23 22:11:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions. [2019-11-23 22:11:10,990 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 11 [2019-11-23 22:11:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:10,991 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 43 transitions. [2019-11-23 22:11:10,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:11:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions. [2019-11-23 22:11:10,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:11:10,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:10,994 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:11,197 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:11,199 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:11,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:11,200 INFO L82 PathProgramCache]: Analyzing trace with hash -272038047, now seen corresponding path program 1 times [2019-11-23 22:11:11,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:11,201 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997058493] [2019-11-23 22:11:11,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:11:11,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997058493] [2019-11-23 22:11:11,319 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241632756] [2019-11-23 22:11:11,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 22:11:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:11,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:11:11,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:11,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:11:11,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2019-11-23 22:11:11,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27471908] [2019-11-23 22:11:11,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:11:11,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:11,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:11:11,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:11:11,418 INFO L87 Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 5 states. [2019-11-23 22:11:11,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:11,457 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2019-11-23 22:11:11,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:11:11,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-23 22:11:11,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:11,459 INFO L225 Difference]: With dead ends: 36 [2019-11-23 22:11:11,459 INFO L226 Difference]: Without dead ends: 26 [2019-11-23 22:11:11,459 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:11:11,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-23 22:11:11,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-23 22:11:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 22:11:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2019-11-23 22:11:11,464 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 13 [2019-11-23 22:11:11,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:11,464 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2019-11-23 22:11:11,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:11:11,464 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2019-11-23 22:11:11,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-23 22:11:11,465 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:11:11,465 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:11:11,675 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:11,676 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:11:11,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:11:11,676 INFO L82 PathProgramCache]: Analyzing trace with hash 55602980, now seen corresponding path program 1 times [2019-11-23 22:11:11,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:11:11,677 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986465914] [2019-11-23 22:11:11,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:11:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:11,777 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 22:11:11,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986465914] [2019-11-23 22:11:11,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827093954] [2019-11-23 22:11:11,777 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 22:11:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:11:11,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-23 22:11:11,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:11:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:11:11,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:11:11,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2019-11-23 22:11:11,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112555667] [2019-11-23 22:11:11,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:11:11,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:11:11,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:11:11,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:11,872 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand 5 states. [2019-11-23 22:11:11,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:11:11,889 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2019-11-23 22:11:11,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:11:11,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-11-23 22:11:11,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:11:11,891 INFO L225 Difference]: With dead ends: 29 [2019-11-23 22:11:11,891 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:11:11,892 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2019-11-23 22:11:11,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:11:11,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:11:11,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:11:11,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:11:11,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-11-23 22:11:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:11:11,893 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:11:11,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:11:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:11:11,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:11:12,099 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:11:12,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:11:12,419 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-23 22:11:12,420 INFO L440 ceAbstractionStarter]: At program point L32-2(lines 32 36) the Hoare annotation is: (let ((.cse0 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse2 (<= 10000 ULTIMATE.start_main_~c3~0)) (.cse1 (< ULTIMATE.start_main_~n~0 2)) (.cse3 (<= 4000 ULTIMATE.start_main_~c1~0))) (or (and (<= 1 ULTIMATE.start_main_~j~0) .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse2 .cse1 (<= 2000 ULTIMATE.start_main_~k~0) (<= 0 ULTIMATE.start_main_~j~0) .cse3) (and (<= ULTIMATE.start_main_~i~0 0) (<= ULTIMATE.start_main_~n~0 0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0)))) [2019-11-23 22:11:12,420 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:11:12,420 INFO L444 ceAbstractionStarter]: For program point L32-3(lines 32 36) no Hoare annotation was computed. [2019-11-23 22:11:12,420 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:11:12,420 INFO L444 ceAbstractionStarter]: For program point L24(lines 24 29) no Hoare annotation was computed. [2019-11-23 22:11:12,420 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:11:12,421 INFO L444 ceAbstractionStarter]: For program point L20-2(lines 20 30) no Hoare annotation was computed. [2019-11-23 22:11:12,421 INFO L447 ceAbstractionStarter]: At program point L37(lines 10 38) the Hoare annotation is: true [2019-11-23 22:11:12,421 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:11:12,421 INFO L440 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: (and (<= 2000 ULTIMATE.start_main_~c2~0) (< ULTIMATE.start_main_~n~0 2) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 10000 ULTIMATE.start_main_~c3~0) (<= 0 ULTIMATE.start_main_~j~0) (<= 4000 ULTIMATE.start_main_~c1~0)) [2019-11-23 22:11:12,421 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:11:12,421 INFO L444 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-23 22:11:12,422 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:11:12,422 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 29) no Hoare annotation was computed. [2019-11-23 22:11:12,422 INFO L440 ceAbstractionStarter]: At program point L26-2(lines 20 30) the Hoare annotation is: (let ((.cse0 (<= 2000 ULTIMATE.start_main_~c2~0)) (.cse1 (<= 10000 ULTIMATE.start_main_~c3~0)) (.cse2 (<= 4000 ULTIMATE.start_main_~c1~0))) (or (and (<= 1 ULTIMATE.start_main_~i~0) .cse0 .cse1 (< ULTIMATE.start_main_~n~0 2) (<= 2000 ULTIMATE.start_main_~k~0) .cse2) (and (<= ULTIMATE.start_main_~i~0 0) (<= 0 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse2 (<= 0 ULTIMATE.start_main_~i~0)))) [2019-11-23 22:11:12,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:11:12 BoogieIcfgContainer [2019-11-23 22:11:12,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:11:12,444 INFO L168 Benchmark]: Toolchain (without parser) took 4240.57 ms. Allocated memory was 138.9 MB in the beginning and 242.7 MB in the end (delta: 103.8 MB). Free memory was 102.7 MB in the beginning and 193.7 MB in the end (delta: -91.1 MB). Peak memory consumption was 112.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:12,445 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-23 22:11:12,446 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.41 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:12,447 INFO L168 Benchmark]: Boogie Procedure Inliner took 160.27 ms. Allocated memory was 138.9 MB in the beginning and 205.5 MB in the end (delta: 66.6 MB). Free memory was 92.8 MB in the beginning and 184.8 MB in the end (delta: -92.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:12,447 INFO L168 Benchmark]: Boogie Preprocessor took 38.86 ms. Allocated memory is still 205.5 MB. Free memory was 184.8 MB in the beginning and 183.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:12,448 INFO L168 Benchmark]: RCFGBuilder took 295.95 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 169.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:12,449 INFO L168 Benchmark]: TraceAbstraction took 3462.19 ms. Allocated memory was 205.5 MB in the beginning and 242.7 MB in the end (delta: 37.2 MB). Free memory was 169.7 MB in the beginning and 193.7 MB in the end (delta: -24.0 MB). Peak memory consumption was 113.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:11:12,458 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.41 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 92.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 160.27 ms. Allocated memory was 138.9 MB in the beginning and 205.5 MB in the end (delta: 66.6 MB). Free memory was 92.8 MB in the beginning and 184.8 MB in the end (delta: -92.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.86 ms. Allocated memory is still 205.5 MB. Free memory was 184.8 MB in the beginning and 183.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 295.95 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 169.7 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3462.19 ms. Allocated memory was 205.5 MB in the beginning and 242.7 MB in the end (delta: 37.2 MB). Free memory was 169.7 MB in the beginning and 193.7 MB in the end (delta: -24.0 MB). Peak memory consumption was 113.2 MB. Max. memory is 7.1 GB. * 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: ((((2000 <= c2 && n < 2) && !(0 == cond)) && 10000 <= c3) && 0 <= j) && 4000 <= c1 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (((((1 <= i && 2000 <= c2) && 10000 <= c3) && n < 2) && 2000 <= k) && 4000 <= c1) || (((((i <= 0 && 0 <= k) && 2000 <= c2) && 10000 <= c3) && 4000 <= c1) && 0 <= i) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((1 <= j && 2000 <= c2) && n < 2) && 10000 <= c3) && 4000 <= c1) || (((((2000 <= c2 && 10000 <= c3) && n < 2) && 2000 <= k) && 0 <= j) && 4000 <= c1)) || ((i <= 0 && n <= 0) && n <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 3.3s, OverallIterations: 7, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 107 SDtfs, 118 SDslu, 188 SDs, 0 SdLazy, 233 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 7 MinimizatonAttempts, 32 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 13 NumberOfFragments, 106 HoareAnnotationTreeSize, 4 FomulaSimplifications, 549 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 276 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 4831 SizeOfPredicates, 15 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 9/22 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...