/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/loops/string-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:15:09,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:15:09,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:15:09,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:15:09,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:15:09,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:15:09,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:15:09,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:15:09,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:15:09,763 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:15:09,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:15:09,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:15:09,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:15:09,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:15:09,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:15:09,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:15:09,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:15:09,770 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:15:09,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:15:09,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:15:09,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:15:09,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:15:09,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:15:09,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:15:09,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:15:09,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:15:09,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:15:09,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:15:09,803 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 22:15:09,824 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:15:09,824 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:15:09,826 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:15:09,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:15:09,826 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:15:09,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:15:09,827 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:15:09,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:15:09,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:15:09,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:15:09,828 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:15:09,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:15:09,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:15:09,829 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:15:09,829 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:15:09,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:15:09,830 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:15:09,830 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:15:09,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:15:09,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:15:09,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:15:09,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:15:09,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:15:09,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:15:09,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:15:09,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:15:09,832 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:15:09,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:15:09,832 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:15:09,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:15:10,127 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:15:10,140 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:15:10,143 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:15:10,145 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:15:10,145 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:15:10,146 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/string-1.i [2019-11-23 22:15:10,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7553d97b8/c56b16c72425460e93b35a3a2b2cc34c/FLAG5d2bf96dd [2019-11-23 22:15:10,633 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:15:10,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/string-1.i [2019-11-23 22:15:10,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7553d97b8/c56b16c72425460e93b35a3a2b2cc34c/FLAG5d2bf96dd [2019-11-23 22:15:11,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7553d97b8/c56b16c72425460e93b35a3a2b2cc34c [2019-11-23 22:15:11,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:15:11,059 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:15:11,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:11,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:15:11,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:15:11,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12d92a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11, skipping insertion in model container [2019-11-23 22:15:11,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:15:11,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:15:11,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:11,303 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:15:11,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:11,429 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:15:11,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11 WrapperNode [2019-11-23 22:15:11,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:11,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:11,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:15:11,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:15:11,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:11,489 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:15:11,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:15:11,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:15:11,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,498 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (1/1) ... [2019-11-23 22:15:11,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:15:11,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:15:11,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:15:11,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:15:11,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (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 22:15:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:15:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:15:11,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:15:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:15:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-23 22:15:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:15:11,872 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:15:11,873 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-23 22:15:11,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:11 BoogieIcfgContainer [2019-11-23 22:15:11,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:15:11,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:15:11,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:15:11,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:15:11,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:15:11" (1/3) ... [2019-11-23 22:15:11,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a43cfe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:11, skipping insertion in model container [2019-11-23 22:15:11,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:11" (2/3) ... [2019-11-23 22:15:11,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a43cfe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:11, skipping insertion in model container [2019-11-23 22:15:11,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:11" (3/3) ... [2019-11-23 22:15:11,884 INFO L109 eAbstractionObserver]: Analyzing ICFG string-1.i [2019-11-23 22:15:11,897 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:15:11,906 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:15:11,937 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:15:11,967 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:15:11,968 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:15:11,968 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:15:11,968 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:15:11,968 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:15:11,968 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:15:11,968 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:15:11,969 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:15:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2019-11-23 22:15:11,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-23 22:15:11,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:11,995 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:11,996 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:12,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:12,000 INFO L82 PathProgramCache]: Analyzing trace with hash 374782792, now seen corresponding path program 1 times [2019-11-23 22:15:12,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:12,009 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325710678] [2019-11-23 22:15:12,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:12,132 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 22:15:12,133 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325710678] [2019-11-23 22:15:12,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:12,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:15:12,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071839025] [2019-11-23 22:15:12,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 22:15:12,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:12,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 22:15:12,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:15:12,154 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 2 states. [2019-11-23 22:15:12,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:12,172 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2019-11-23 22:15:12,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 22:15:12,174 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-23 22:15:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:12,182 INFO L225 Difference]: With dead ends: 48 [2019-11-23 22:15:12,182 INFO L226 Difference]: Without dead ends: 22 [2019-11-23 22:15:12,185 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 22:15:12,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-23 22:15:12,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-23 22:15:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 22:15:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2019-11-23 22:15:12,221 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2019-11-23 22:15:12,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:12,222 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2019-11-23 22:15:12,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 22:15:12,222 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2019-11-23 22:15:12,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:15:12,223 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:12,223 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:12,224 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:12,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:12,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1602331574, now seen corresponding path program 1 times [2019-11-23 22:15:12,225 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:12,225 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606706594] [2019-11-23 22:15:12,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:12,276 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 22:15:12,276 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606706594] [2019-11-23 22:15:12,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:12,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:15:12,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347317553] [2019-11-23 22:15:12,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:15:12,279 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:12,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:15:12,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:15:12,280 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand 3 states. [2019-11-23 22:15:12,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:12,365 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2019-11-23 22:15:12,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:15:12,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-23 22:15:12,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:12,368 INFO L225 Difference]: With dead ends: 50 [2019-11-23 22:15:12,368 INFO L226 Difference]: Without dead ends: 32 [2019-11-23 22:15:12,369 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:15:12,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-23 22:15:12,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2019-11-23 22:15:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-23 22:15:12,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2019-11-23 22:15:12,376 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 18 [2019-11-23 22:15:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:12,376 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2019-11-23 22:15:12,377 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:15:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2019-11-23 22:15:12,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-23 22:15:12,378 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:12,378 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:12,378 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:12,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:12,379 INFO L82 PathProgramCache]: Analyzing trace with hash 177830358, now seen corresponding path program 1 times [2019-11-23 22:15:12,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:12,380 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840927478] [2019-11-23 22:15:12,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:12,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:15:12,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840927478] [2019-11-23 22:15:12,487 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545648062] [2019-11-23 22:15:12,487 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 22:15:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:12,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:15:12,594 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:15:12,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:15:12,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:15:12,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 22:15:12,621 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866516322] [2019-11-23 22:15:12,621 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:15:12,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:12,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:15:12,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:12,622 INFO L87 Difference]: Start difference. First operand 24 states and 29 transitions. Second operand 5 states. [2019-11-23 22:15:12,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:12,722 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2019-11-23 22:15:12,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:15:12,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-23 22:15:12,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:12,723 INFO L225 Difference]: With dead ends: 61 [2019-11-23 22:15:12,724 INFO L226 Difference]: Without dead ends: 42 [2019-11-23 22:15:12,724 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-23 22:15:12,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 28. [2019-11-23 22:15:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-23 22:15:12,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-23 22:15:12,737 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 22 [2019-11-23 22:15:12,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:12,737 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-23 22:15:12,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:15:12,738 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-23 22:15:12,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-23 22:15:12,740 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:12,740 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:12,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:15:12,945 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:12,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:12,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1590720246, now seen corresponding path program 2 times [2019-11-23 22:15:12,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:12,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652363260] [2019-11-23 22:15:12,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:15:13,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652363260] [2019-11-23 22:15:13,022 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578567747] [2019-11-23 22:15:13,022 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:15:13,073 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-23 22:15:13,073 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:15:13,074 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 22:15:13,076 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:15:13,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:15:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-23 22:15:13,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:15:13,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-11-23 22:15:13,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659894386] [2019-11-23 22:15:13,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:15:13,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:13,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:15:13,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:15:13,142 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 5 states. [2019-11-23 22:15:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:13,221 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-11-23 22:15:13,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:15:13,222 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-11-23 22:15:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:13,223 INFO L225 Difference]: With dead ends: 38 [2019-11-23 22:15:13,223 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:15:13,224 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:15:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:15:13,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:15:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:15:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:15:13,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-11-23 22:15:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:13,227 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:15:13,227 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:15:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:15:13,227 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:15:13,432 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:15:13,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:15:13,458 INFO L444 ceAbstractionStarter]: For program point L23-2(lines 23 24) no Hoare annotation was computed. [2019-11-23 22:15:13,458 INFO L447 ceAbstractionStarter]: At program point L23-3(lines 23 24) the Hoare annotation is: true [2019-11-23 22:15:13,459 INFO L444 ceAbstractionStarter]: For program point L23-4(lines 23 24) no Hoare annotation was computed. [2019-11-23 22:15:13,459 INFO L444 ceAbstractionStarter]: For program point L19-2(lines 19 20) no Hoare annotation was computed. [2019-11-23 22:15:13,459 INFO L447 ceAbstractionStarter]: At program point L19-3(lines 19 20) the Hoare annotation is: true [2019-11-23 22:15:13,459 INFO L444 ceAbstractionStarter]: For program point L19-4(lines 19 20) no Hoare annotation was computed. [2019-11-23 22:15:13,459 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 22:15:13,459 INFO L444 ceAbstractionStarter]: For program point L32-1(lines 32 33) no Hoare annotation was computed. [2019-11-23 22:15:13,460 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:15:13,460 INFO L447 ceAbstractionStarter]: At program point L32-3(lines 32 33) the Hoare annotation is: true [2019-11-23 22:15:13,460 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:15:13,460 INFO L444 ceAbstractionStarter]: For program point L32-4(lines 15 58) no Hoare annotation was computed. [2019-11-23 22:15:13,460 INFO L444 ceAbstractionStarter]: For program point L28-1(lines 28 29) no Hoare annotation was computed. [2019-11-23 22:15:13,460 INFO L447 ceAbstractionStarter]: At program point L28-3(lines 28 29) the Hoare annotation is: true [2019-11-23 22:15:13,460 INFO L447 ceAbstractionStarter]: At program point L57(lines 14 58) the Hoare annotation is: true [2019-11-23 22:15:13,461 INFO L444 ceAbstractionStarter]: For program point L28-4(lines 28 29) no Hoare annotation was computed. [2019-11-23 22:15:13,461 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-23 22:15:13,462 INFO L444 ceAbstractionStarter]: For program point L41(lines 41 50) no Hoare annotation was computed. [2019-11-23 22:15:13,462 INFO L447 ceAbstractionStarter]: At program point L41-2(lines 39 51) the Hoare annotation is: true [2019-11-23 22:15:13,462 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:15:13,462 INFO L444 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2019-11-23 22:15:13,462 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-23 22:15:13,462 INFO L444 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-23 22:15:13,463 INFO L447 ceAbstractionStarter]: At program point L5-2(lines 4 9) the Hoare annotation is: true [2019-11-23 22:15:13,463 INFO L444 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-23 22:15:13,463 INFO L444 ceAbstractionStarter]: For program point L39-2(lines 39 51) no Hoare annotation was computed. [2019-11-23 22:15:13,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:15:13 BoogieIcfgContainer [2019-11-23 22:15:13,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:15:13,476 INFO L168 Benchmark]: Toolchain (without parser) took 2414.19 ms. Allocated memory was 136.8 MB in the beginning and 231.2 MB in the end (delta: 94.4 MB). Free memory was 101.8 MB in the beginning and 192.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:13,477 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-23 22:15:13,478 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.18 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 179.4 MB in the end (delta: -77.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:13,479 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.98 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 177.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:13,480 INFO L168 Benchmark]: Boogie Preprocessor took 27.57 ms. Allocated memory is still 200.3 MB. Free memory was 177.0 MB in the beginning and 175.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:13,481 INFO L168 Benchmark]: RCFGBuilder took 358.31 ms. Allocated memory is still 200.3 MB. Free memory was 175.6 MB in the beginning and 158.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:13,482 INFO L168 Benchmark]: TraceAbstraction took 1594.42 ms. Allocated memory was 200.3 MB in the beginning and 231.2 MB in the end (delta: 30.9 MB). Free memory was 157.6 MB in the beginning and 192.5 MB in the end (delta: -34.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-23 22:15:13,486 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 371.18 ms. Allocated memory was 136.8 MB in the beginning and 200.3 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 179.4 MB in the end (delta: -77.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 57.98 ms. Allocated memory is still 200.3 MB. Free memory was 179.4 MB in the beginning and 177.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.57 ms. Allocated memory is still 200.3 MB. Free memory was 177.0 MB in the beginning and 175.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 358.31 ms. Allocated memory is still 200.3 MB. Free memory was 175.6 MB in the beginning and 158.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1594.42 ms. Allocated memory was 200.3 MB in the beginning and 231.2 MB in the end (delta: 30.9 MB). Free memory was 157.6 MB in the beginning and 192.5 MB in the end (delta: -34.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 29 SDslu, 94 SDs, 0 SdLazy, 72 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, 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, 4 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 130 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 124 ConstructedInterpolants, 0 QuantifiedInterpolants, 3682 SizeOfPredicates, 6 NumberOfNonLiveVariables, 142 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 14/20 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...