/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/list-simple/dll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:03:29,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:03:29,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:03:29,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-23 22:03:29,137 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:03:29,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:03:29,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:03:29,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:03:29,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:03:29,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:03:29,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:03:29,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:03:29,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:03:29,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:03:29,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:03:29,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:03:29,165 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:03:29,178 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 22:03:29,201 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:03:29,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:03:29,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:03:29,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:03:29,208 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:03:29,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:03:29,208 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:03:29,208 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:03:29,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:03:29,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:03:29,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:03:29,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:03:29,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:03:29,210 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:03:29,210 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:03:29,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:03:29,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:03:29,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:03:29,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:03:29,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:03:29,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:03:29,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:03:29,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:03:29,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:03:29,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:03:29,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:03:29,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:03:29,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:03:29,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:03:29,213 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:03:29,495 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:03:29,517 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:03:29,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:03:29,522 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:03:29,522 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:03:29,523 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2019-11-23 22:03:29,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f07eba07/092aafedd33d49b4830dbffbd5e9d829/FLAGde1b91169 [2019-11-23 22:03:30,084 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:03:30,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_update_all_reverse.i [2019-11-23 22:03:30,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f07eba07/092aafedd33d49b4830dbffbd5e9d829/FLAGde1b91169 [2019-11-23 22:03:30,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f07eba07/092aafedd33d49b4830dbffbd5e9d829 [2019-11-23 22:03:30,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:03:30,405 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:03:30,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:03:30,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:03:30,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:03:30,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:03:30" (1/1) ... [2019-11-23 22:03:30,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@737ed1c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:30, skipping insertion in model container [2019-11-23 22:03:30,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:03:30" (1/1) ... [2019-11-23 22:03:30,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:03:30,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:03:30,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:03:30,919 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:03:30,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:03:31,021 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:03:31,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31 WrapperNode [2019-11-23 22:03:31,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:03:31,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:03:31,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:03:31,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:03:31,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (1/1) ... [2019-11-23 22:03:31,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (1/1) ... [2019-11-23 22:03:31,085 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:03:31,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:03:31,086 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:03:31,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:03:31,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (1/1) ... [2019-11-23 22:03:31,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (1/1) ... [2019-11-23 22:03:31,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (1/1) ... [2019-11-23 22:03:31,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (1/1) ... [2019-11-23 22:03:31,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (1/1) ... [2019-11-23 22:03:31,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (1/1) ... [2019-11-23 22:03:31,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (1/1) ... [2019-11-23 22:03:31,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:03:31,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:03:31,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:03:31,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:03:31,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (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 22:03:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 22:03:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 22:03:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 22:03:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-23 22:03:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-23 22:03:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 22:03:31,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:03:31,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:03:31,582 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:03:31,582 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-23 22:03:31,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:03:31 BoogieIcfgContainer [2019-11-23 22:03:31,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:03:31,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:03:31,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:03:31,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:03:31,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:03:30" (1/3) ... [2019-11-23 22:03:31,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6156cd63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:03:31, skipping insertion in model container [2019-11-23 22:03:31,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:03:31" (2/3) ... [2019-11-23 22:03:31,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6156cd63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:03:31, skipping insertion in model container [2019-11-23 22:03:31,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:03:31" (3/3) ... [2019-11-23 22:03:31,592 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_update_all_reverse.i [2019-11-23 22:03:31,602 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:03:31,609 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:03:31,617 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:03:31,637 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:03:31,638 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:03:31,638 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:03:31,638 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:03:31,638 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:03:31,639 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:03:31,639 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:03:31,639 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:03:31,654 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2019-11-23 22:03:31,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:03:31,660 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:03:31,661 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:03:31,661 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:03:31,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:03:31,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1608020802, now seen corresponding path program 1 times [2019-11-23 22:03:31,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:03:31,673 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145263460] [2019-11-23 22:03:31,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:03:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:03:31,815 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 22:03:31,816 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145263460] [2019-11-23 22:03:31,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:03:31,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:03:31,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152604229] [2019-11-23 22:03:31,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:03:31,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:03:31,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:03:31,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:03:31,835 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2019-11-23 22:03:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:03:31,887 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2019-11-23 22:03:31,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:03:31,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-23 22:03:31,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:03:31,905 INFO L225 Difference]: With dead ends: 56 [2019-11-23 22:03:31,905 INFO L226 Difference]: Without dead ends: 27 [2019-11-23 22:03:31,912 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 22:03:31,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-23 22:03:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2019-11-23 22:03:31,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-23 22:03:31,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2019-11-23 22:03:31,969 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13 [2019-11-23 22:03:31,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:03:31,971 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2019-11-23 22:03:31,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:03:31,971 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2019-11-23 22:03:31,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:03:31,972 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:03:31,973 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 22:03:31,974 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:03:31,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:03:31,975 INFO L82 PathProgramCache]: Analyzing trace with hash -780239213, now seen corresponding path program 1 times [2019-11-23 22:03:31,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:03:31,976 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731705446] [2019-11-23 22:03:31,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:03:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:03:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:03:32,098 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731705446] [2019-11-23 22:03:32,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:03:32,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:03:32,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205724486] [2019-11-23 22:03:32,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:03:32,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:03:32,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:03:32,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:03:32,102 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand 3 states. [2019-11-23 22:03:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:03:32,132 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2019-11-23 22:03:32,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:03:32,132 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-23 22:03:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:03:32,133 INFO L225 Difference]: With dead ends: 47 [2019-11-23 22:03:32,134 INFO L226 Difference]: Without dead ends: 27 [2019-11-23 22:03:32,135 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 22:03:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-23 22:03:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-23 22:03:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 22:03:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2019-11-23 22:03:32,140 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2019-11-23 22:03:32,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:03:32,141 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2019-11-23 22:03:32,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:03:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2019-11-23 22:03:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-23 22:03:32,142 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:03:32,142 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 22:03:32,142 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:03:32,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:03:32,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1367045227, now seen corresponding path program 1 times [2019-11-23 22:03:32,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:03:32,144 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42462519] [2019-11-23 22:03:32,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:03:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:03:32,214 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 22:03:32,214 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42462519] [2019-11-23 22:03:32,215 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764752176] [2019-11-23 22:03:32,215 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 22:03:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:03:32,313 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 22:03:32,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:03:32,365 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 22:03:32,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:03:32,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 22:03:32,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754516631] [2019-11-23 22:03:32,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:03:32,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:03:32,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:03:32,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:03:32,373 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 5 states. [2019-11-23 22:03:32,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:03:32,408 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2019-11-23 22:03:32,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:03:32,409 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-23 22:03:32,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:03:32,410 INFO L225 Difference]: With dead ends: 43 [2019-11-23 22:03:32,410 INFO L226 Difference]: Without dead ends: 28 [2019-11-23 22:03:32,410 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 22:03:32,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-11-23 22:03:32,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-11-23 22:03:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-23 22:03:32,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-23 22:03:32,437 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-11-23 22:03:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:03:32,438 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-23 22:03:32,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:03:32,438 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-23 22:03:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-23 22:03:32,439 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:03:32,440 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:03:32,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:03:32,645 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:03:32,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:03:32,646 INFO L82 PathProgramCache]: Analyzing trace with hash 980561436, now seen corresponding path program 1 times [2019-11-23 22:03:32,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:03:32,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529810191] [2019-11-23 22:03:32,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:03:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:03:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-23 22:03:32,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529810191] [2019-11-23 22:03:32,788 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326386201] [2019-11-23 22:03:32,788 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 22:03:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:03:32,862 INFO L255 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-23 22:03:32,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:03:32,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-23 22:03:32,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:03:32,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2019-11-23 22:03:32,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028032810] [2019-11-23 22:03:32,870 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:03:32,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:03:32,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:03:32,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:03:32,871 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2019-11-23 22:03:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:03:32,911 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-11-23 22:03:32,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:03:32,912 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2019-11-23 22:03:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:03:32,912 INFO L225 Difference]: With dead ends: 34 [2019-11-23 22:03:32,913 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:03:32,913 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:03:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:03:32,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:03:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:03:32,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:03:32,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2019-11-23 22:03:32,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:03:32,915 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:03:32,915 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:03:32,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:03:32,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:03:33,116 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:03:33,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:03:33,166 INFO L444 ceAbstractionStarter]: For program point L622-2(lines 622 627) no Hoare annotation was computed. [2019-11-23 22:03:33,166 INFO L440 ceAbstractionStarter]: At program point L622-3(lines 622 627) the Hoare annotation is: (and (<= 2 ULTIMATE.start_main_~len~0) (<= 1 ULTIMATE.start_main_~i~0)) [2019-11-23 22:03:33,166 INFO L444 ceAbstractionStarter]: For program point L622-4(lines 622 627) no Hoare annotation was computed. [2019-11-23 22:03:33,166 INFO L444 ceAbstractionStarter]: For program point L606(lines 1 632) no Hoare annotation was computed. [2019-11-23 22:03:33,167 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:03:33,167 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:03:33,167 INFO L447 ceAbstractionStarter]: At program point L631(lines 613 632) the Hoare annotation is: true [2019-11-23 22:03:33,167 INFO L440 ceAbstractionStarter]: At program point L590(lines 574 591) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-11-23 22:03:33,167 INFO L440 ceAbstractionStarter]: At program point L607-2(lines 607 610) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-11-23 22:03:33,167 INFO L444 ceAbstractionStarter]: For program point L607-3(lines 607 610) no Hoare annotation was computed. [2019-11-23 22:03:33,168 INFO L444 ceAbstractionStarter]: For program point L624(lines 624 626) no Hoare annotation was computed. [2019-11-23 22:03:33,168 INFO L440 ceAbstractionStarter]: At program point L600-2(lines 600 603) the Hoare annotation is: false [2019-11-23 22:03:33,168 INFO L444 ceAbstractionStarter]: For program point L600-3(lines 600 603) no Hoare annotation was computed. [2019-11-23 22:03:33,168 INFO L440 ceAbstractionStarter]: At program point L625(lines 613 632) the Hoare annotation is: false [2019-11-23 22:03:33,168 INFO L444 ceAbstractionStarter]: For program point L592(lines 592 598) no Hoare annotation was computed. [2019-11-23 22:03:33,168 INFO L444 ceAbstractionStarter]: For program point L584(lines 584 586) no Hoare annotation was computed. [2019-11-23 22:03:33,168 INFO L444 ceAbstractionStarter]: For program point L584-2(lines 584 586) no Hoare annotation was computed. [2019-11-23 22:03:33,169 INFO L440 ceAbstractionStarter]: At program point L576-2(lines 576 589) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-11-23 22:03:33,169 INFO L444 ceAbstractionStarter]: For program point L576-3(lines 576 589) no Hoare annotation was computed. [2019-11-23 22:03:33,169 INFO L447 ceAbstractionStarter]: At program point L593-2(lines 593 597) the Hoare annotation is: true [2019-11-23 22:03:33,169 INFO L440 ceAbstractionStarter]: At program point L618-2(lines 618 621) the Hoare annotation is: (<= 2 ULTIMATE.start_main_~len~0) [2019-11-23 22:03:33,169 INFO L444 ceAbstractionStarter]: For program point L618-3(lines 618 621) no Hoare annotation was computed. [2019-11-23 22:03:33,169 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-23 22:03:33,170 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 630) no Hoare annotation was computed. [2019-11-23 22:03:33,170 INFO L444 ceAbstractionStarter]: For program point L578(lines 578 580) no Hoare annotation was computed. [2019-11-23 22:03:33,170 INFO L444 ceAbstractionStarter]: For program point L578-1(lines 578 580) no Hoare annotation was computed. [2019-11-23 22:03:33,170 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:03:33,170 INFO L447 ceAbstractionStarter]: At program point L562(line 562) the Hoare annotation is: true [2019-11-23 22:03:33,171 INFO L440 ceAbstractionStarter]: At program point L604(lines 599 605) the Hoare annotation is: false [2019-11-23 22:03:33,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:03:33 BoogieIcfgContainer [2019-11-23 22:03:33,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:03:33,190 INFO L168 Benchmark]: Toolchain (without parser) took 2784.00 ms. Allocated memory was 139.5 MB in the beginning and 233.8 MB in the end (delta: 94.4 MB). Free memory was 102.9 MB in the beginning and 167.7 MB in the end (delta: -64.9 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:03:33,191 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-23 22:03:33,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.16 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 169.6 MB in the end (delta: -67.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2019-11-23 22:03:33,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.09 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 166.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:03:33,195 INFO L168 Benchmark]: Boogie Preprocessor took 39.53 ms. Allocated memory is still 203.4 MB. Free memory was 166.8 MB in the beginning and 164.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:03:33,196 INFO L168 Benchmark]: RCFGBuilder took 458.47 ms. Allocated memory is still 203.4 MB. Free memory was 164.8 MB in the beginning and 143.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:03:33,199 INFO L168 Benchmark]: TraceAbstraction took 1602.12 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 142.8 MB in the beginning and 167.7 MB in the end (delta: -25.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:03:33,212 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 616.16 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 102.7 MB in the beginning and 169.6 MB in the end (delta: -67.0 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.09 ms. Allocated memory is still 203.4 MB. Free memory was 169.6 MB in the beginning and 166.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.53 ms. Allocated memory is still 203.4 MB. Free memory was 166.8 MB in the beginning and 164.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 458.47 ms. Allocated memory is still 203.4 MB. Free memory was 164.8 MB in the beginning and 143.4 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1602.12 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 142.8 MB in the beginning and 167.7 MB in the end (delta: -25.0 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 630]: 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: 574]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 618]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 607]: Loop Invariant Derived loop invariant: 2 <= len - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 599]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 613]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 622]: Loop Invariant Derived loop invariant: 2 <= len && 1 <= i - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 33 SDslu, 108 SDs, 0 SdLazy, 26 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 11 PreInvPairs, 23 NumberOfFragments, 25 HoareAnnotationTreeSize, 11 FomulaSimplifications, 37 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 107 ConstructedInterpolants, 0 QuantifiedInterpolants, 4491 SizeOfPredicates, 5 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 9/17 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...