/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/trex04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:15:48,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:15:48,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:15:48,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:15:48,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:15:48,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:15:48,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:15:48,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:15:48,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:15:48,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:15:48,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:15:48,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:15:48,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:15:48,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:15:48,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:15:48,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:15:48,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:15:48,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:15:48,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:15:48,515 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:15:48,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:15:48,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:15:48,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:15:48,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:15:48,526 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:15:48,537 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 22:15:48,572 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:15:48,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:15:48,573 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:15:48,573 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:15:48,574 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:15:48,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:15:48,574 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:15:48,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:15:48,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:15:48,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:15:48,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:15:48,577 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:15:48,577 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:15:48,577 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:15:48,578 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:15:48,578 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:15:48,578 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:15:48,578 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:15:48,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:15:48,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:15:48,579 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:15:48,579 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:15:48,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:15:48,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:15:48,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:15:48,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:15:48,581 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:15:48,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:15:48,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:15:48,582 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:15:48,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:15:48,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:15:48,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:15:48,881 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:15:48,881 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:15:48,882 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex04.c [2019-11-23 22:15:48,949 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b562d56/bf8cad7c19a240c4b1d26ecb56960799/FLAG23d160a8f [2019-11-23 22:15:49,384 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:15:49,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex04.c [2019-11-23 22:15:49,391 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b562d56/bf8cad7c19a240c4b1d26ecb56960799/FLAG23d160a8f [2019-11-23 22:15:49,791 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27b562d56/bf8cad7c19a240c4b1d26ecb56960799 [2019-11-23 22:15:49,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:15:49,803 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:15:49,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:49,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:15:49,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:15:49,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:49" (1/1) ... [2019-11-23 22:15:49,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57cabdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:49, skipping insertion in model container [2019-11-23 22:15:49,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:15:49" (1/1) ... [2019-11-23 22:15:49,823 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:15:49,840 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:15:50,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:50,038 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:15:50,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:15:50,066 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:15:50,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50 WrapperNode [2019-11-23 22:15:50,067 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:15:50,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:50,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:15:50,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:15:50,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (1/1) ... [2019-11-23 22:15:50,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (1/1) ... [2019-11-23 22:15:50,182 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:15:50,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:15:50,183 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:15:50,183 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:15:50,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (1/1) ... [2019-11-23 22:15:50,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (1/1) ... [2019-11-23 22:15:50,193 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (1/1) ... [2019-11-23 22:15:50,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (1/1) ... [2019-11-23 22:15:50,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (1/1) ... [2019-11-23 22:15:50,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (1/1) ... [2019-11-23 22:15:50,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (1/1) ... [2019-11-23 22:15:50,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:15:50,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:15:50,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:15:50,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:15:50,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (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 22:15:50,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:15:50,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:15:50,551 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:15:50,552 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-23 22:15:50,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:50 BoogieIcfgContainer [2019-11-23 22:15:50,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:15:50,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:15:50,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:15:50,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:15:50,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:15:49" (1/3) ... [2019-11-23 22:15:50,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5968b785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:50, skipping insertion in model container [2019-11-23 22:15:50,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:15:50" (2/3) ... [2019-11-23 22:15:50,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5968b785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:15:50, skipping insertion in model container [2019-11-23 22:15:50,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:15:50" (3/3) ... [2019-11-23 22:15:50,574 INFO L109 eAbstractionObserver]: Analyzing ICFG trex04.c [2019-11-23 22:15:50,583 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:15:50,590 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:15:50,607 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:15:50,628 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:15:50,628 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:15:50,629 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:15:50,629 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:15:50,629 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:15:50,629 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:15:50,629 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:15:50,629 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:15:50,642 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-11-23 22:15:50,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:15:50,647 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:50,647 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:50,648 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:50,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:50,652 INFO L82 PathProgramCache]: Analyzing trace with hash 234757229, now seen corresponding path program 1 times [2019-11-23 22:15:50,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:50,659 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999251051] [2019-11-23 22:15:50,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:50,769 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 22:15:50,770 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999251051] [2019-11-23 22:15:50,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:50,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:15:50,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614640794] [2019-11-23 22:15:50,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-23 22:15:50,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:50,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-23 22:15:50,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-23 22:15:50,794 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-11-23 22:15:50,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:50,811 INFO L93 Difference]: Finished difference Result 26 states and 37 transitions. [2019-11-23 22:15:50,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-23 22:15:50,813 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-23 22:15:50,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:50,830 INFO L225 Difference]: With dead ends: 26 [2019-11-23 22:15:50,831 INFO L226 Difference]: Without dead ends: 16 [2019-11-23 22:15:50,834 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 22:15:50,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-23 22:15:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-23 22:15:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-23 22:15:50,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2019-11-23 22:15:50,875 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 24 transitions. Word has length 11 [2019-11-23 22:15:50,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:50,876 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 24 transitions. [2019-11-23 22:15:50,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-23 22:15:50,876 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 24 transitions. [2019-11-23 22:15:50,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-23 22:15:50,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:15:50,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:15:50,877 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:15:50,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:15:50,878 INFO L82 PathProgramCache]: Analyzing trace with hash 234638065, now seen corresponding path program 1 times [2019-11-23 22:15:50,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:15:50,879 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704580269] [2019-11-23 22:15:50,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:15:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:15:50,959 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 22:15:50,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704580269] [2019-11-23 22:15:50,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:15:50,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-23 22:15:50,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791057582] [2019-11-23 22:15:50,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:15:50,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:15:50,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:15:50,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:15:50,964 INFO L87 Difference]: Start difference. First operand 16 states and 24 transitions. Second operand 4 states. [2019-11-23 22:15:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:15:50,998 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2019-11-23 22:15:50,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:15:50,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-23 22:15:50,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:15:50,999 INFO L225 Difference]: With dead ends: 16 [2019-11-23 22:15:50,999 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:15:51,000 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:15:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:15:51,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:15:51,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:15:51,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:15:51,002 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-23 22:15:51,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:15:51,002 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:15:51,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:15:51,002 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:15:51,003 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:15:51,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:15:51,016 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:15:51,017 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:15:51,017 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2019-11-23 22:15:51,017 INFO L444 ceAbstractionStarter]: For program point L37-1(lines 23 43) no Hoare annotation was computed. [2019-11-23 22:15:51,017 INFO L444 ceAbstractionStarter]: For program point L37-2(lines 37 40) no Hoare annotation was computed. [2019-11-23 22:15:51,017 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:15:51,017 INFO L444 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2019-11-23 22:15:51,017 INFO L444 ceAbstractionStarter]: For program point L29-2(lines 23 43) no Hoare annotation was computed. [2019-11-23 22:15:51,018 INFO L444 ceAbstractionStarter]: For program point L17(line 17) no Hoare annotation was computed. [2019-11-23 22:15:51,018 INFO L444 ceAbstractionStarter]: For program point L17-2(lines 14 20) no Hoare annotation was computed. [2019-11-23 22:15:51,018 INFO L444 ceAbstractionStarter]: For program point L17-3(line 17) no Hoare annotation was computed. [2019-11-23 22:15:51,018 INFO L444 ceAbstractionStarter]: For program point L17-5(lines 14 20) no Hoare annotation was computed. [2019-11-23 22:15:51,018 INFO L444 ceAbstractionStarter]: For program point L5(lines 5 7) no Hoare annotation was computed. [2019-11-23 22:15:51,019 INFO L447 ceAbstractionStarter]: At program point L5-2(lines 1 44) the Hoare annotation is: true [2019-11-23 22:15:51,019 INFO L444 ceAbstractionStarter]: For program point L34(line 34) no Hoare annotation was computed. [2019-11-23 22:15:51,019 INFO L444 ceAbstractionStarter]: For program point L34-1(lines 23 43) no Hoare annotation was computed. [2019-11-23 22:15:51,019 INFO L444 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-11-23 22:15:51,020 INFO L444 ceAbstractionStarter]: For program point L26(line 26) no Hoare annotation was computed. [2019-11-23 22:15:51,020 INFO L444 ceAbstractionStarter]: For program point L6(line 6) no Hoare annotation was computed. [2019-11-23 22:15:51,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:15:51 BoogieIcfgContainer [2019-11-23 22:15:51,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:15:51,032 INFO L168 Benchmark]: Toolchain (without parser) took 1226.94 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 103.2 MB in the beginning and 139.5 MB in the end (delta: -36.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:51,034 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-11-23 22:15:51,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.14 ms. Allocated memory is still 145.8 MB. Free memory was 103.0 MB in the beginning and 93.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:51,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.79 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 93.3 MB in the beginning and 182.6 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:51,038 INFO L168 Benchmark]: Boogie Preprocessor took 34.04 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 180.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:51,040 INFO L168 Benchmark]: RCFGBuilder took 336.37 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 167.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:51,043 INFO L168 Benchmark]: TraceAbstraction took 474.27 ms. Allocated memory is still 203.4 MB. Free memory was 166.8 MB in the beginning and 139.5 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2019-11-23 22:15:51,052 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 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.14 ms. Allocated memory is still 145.8 MB. Free memory was 103.0 MB in the beginning and 93.3 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 114.79 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 93.3 MB in the beginning and 182.6 MB in the end (delta: -89.3 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 34.04 ms. Allocated memory is still 203.4 MB. Free memory was 182.6 MB in the beginning and 180.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 336.37 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 167.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 474.27 ms. Allocated memory is still 203.4 MB. Free memory was 166.8 MB in the beginning and 139.5 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. 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: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 1 SDslu, 38 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 1 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 250 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...