java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call2_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:45:29,602 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:45:29,604 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:45:29,616 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:45:29,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:45:29,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:45:29,618 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:45:29,620 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:45:29,622 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:45:29,622 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:45:29,623 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:45:29,624 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:45:29,625 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:45:29,625 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:45:29,626 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:45:29,627 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:45:29,628 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:45:29,630 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:45:29,632 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:45:29,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:45:29,636 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:45:29,638 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:45:29,643 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 22:45:29,659 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:45:29,673 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:45:29,673 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:45:29,674 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:45:29,674 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:45:29,675 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:45:29,675 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:45:29,675 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:45:29,676 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:45:29,676 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:45:29,676 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:45:29,676 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:45:29,677 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:45:29,677 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:45:29,677 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:45:29,677 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:45:29,677 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:45:29,678 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:45:29,678 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:45:29,678 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:45:29,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:45:29,679 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:45:29,679 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:45:29,679 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:45:29,679 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:45:29,679 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:45:29,679 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:45:29,680 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:45:29,680 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:45:29,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:45:29,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:45:29,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:45:29,750 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:45:29,751 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:45:29,751 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call2_true-termination.i [2018-11-06 22:45:29,816 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91239d45c/8762bf5443af438092d7f50c792156c2/FLAGe9493f419 [2018-11-06 22:45:30,215 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:45:30,216 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_true-unreach-call2_true-termination.i [2018-11-06 22:45:30,223 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91239d45c/8762bf5443af438092d7f50c792156c2/FLAGe9493f419 [2018-11-06 22:45:30,238 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91239d45c/8762bf5443af438092d7f50c792156c2 [2018-11-06 22:45:30,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:45:30,250 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:45:30,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:45:30,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:45:30,256 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:45:30,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f99ea58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30, skipping insertion in model container [2018-11-06 22:45:30,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:45:30,291 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:45:30,480 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:45:30,483 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:45:30,496 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:45:30,508 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:45:30,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30 WrapperNode [2018-11-06 22:45:30,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:45:30,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:45:30,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:45:30,510 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:45:30,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,536 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:45:30,537 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:45:30,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:45:30,537 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:45:30,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,547 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (1/1) ... [2018-11-06 22:45:30,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:45:30,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:45:30,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:45:30,553 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:45:30,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (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 [2018-11-06 22:45:30,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:45:30,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:45:30,822 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:45:30,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:30 BoogieIcfgContainer [2018-11-06 22:45:30,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:45:30,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:45:30,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:45:30,828 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:45:30,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:30" (1/3) ... [2018-11-06 22:45:30,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544311f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:30, skipping insertion in model container [2018-11-06 22:45:30,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:30" (2/3) ... [2018-11-06 22:45:30,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544311f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:30, skipping insertion in model container [2018-11-06 22:45:30,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:30" (3/3) ... [2018-11-06 22:45:30,831 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_true-unreach-call2_true-termination.i [2018-11-06 22:45:30,839 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:45:30,846 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:45:30,861 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:45:30,887 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:45:30,888 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:45:30,888 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:45:30,888 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:45:30,888 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:45:30,888 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:45:30,888 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:45:30,888 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:45:30,888 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:45:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2018-11-06 22:45:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-06 22:45:30,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:30,908 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-11-06 22:45:30,910 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:30,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:30,917 INFO L82 PathProgramCache]: Analyzing trace with hash 889783783, now seen corresponding path program 1 times [2018-11-06 22:45:30,919 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:30,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:30,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:30,970 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:45:30,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:31,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:45:31,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:45:31,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:45:31,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:45:31,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:45:31,034 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 2 states. [2018-11-06 22:45:31,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:31,047 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-11-06 22:45:31,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:45:31,049 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-11-06 22:45:31,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:31,058 INFO L225 Difference]: With dead ends: 20 [2018-11-06 22:45:31,059 INFO L226 Difference]: Without dead ends: 8 [2018-11-06 22:45:31,062 INFO L604 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 [2018-11-06 22:45:31,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2018-11-06 22:45:31,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-06 22:45:31,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-06 22:45:31,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2018-11-06 22:45:31,095 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2018-11-06 22:45:31,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:31,095 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2018-11-06 22:45:31,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:45:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2018-11-06 22:45:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-06 22:45:31,096 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:45:31,096 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:45:31,096 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:45:31,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:45:31,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1805923659, now seen corresponding path program 1 times [2018-11-06 22:45:31,097 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:45:31,097 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:45:31,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:45:31,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:45:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:45:31,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:45:31,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:45:31,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:45:31,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:45:31,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:45:31,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:45:31,296 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2018-11-06 22:45:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:45:31,430 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2018-11-06 22:45:31,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:45:31,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-11-06 22:45:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:45:31,431 INFO L225 Difference]: With dead ends: 8 [2018-11-06 22:45:31,431 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 22:45:31,432 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:45:31,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 22:45:31,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 22:45:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 22:45:31,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 22:45:31,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2018-11-06 22:45:31,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:45:31,433 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 22:45:31,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:45:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 22:45:31,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 22:45:31,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 22:45:31,475 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-06 22:45:31,476 INFO L425 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-11-06 22:45:31,476 INFO L428 ceAbstractionStarter]: At program point L3-2(lines 2 7) the Hoare annotation is: true [2018-11-06 22:45:31,476 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-11-06 22:45:31,476 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-11-06 22:45:31,476 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-06 22:45:31,476 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-11-06 22:45:31,477 INFO L425 ceAbstractionStarter]: For program point L10-1(lines 10 12) no Hoare annotation was computed. [2018-11-06 22:45:31,477 INFO L425 ceAbstractionStarter]: For program point L8(lines 8 14) no Hoare annotation was computed. [2018-11-06 22:45:31,477 INFO L428 ceAbstractionStarter]: At program point L10-3(lines 10 12) the Hoare annotation is: true [2018-11-06 22:45:31,477 INFO L425 ceAbstractionStarter]: For program point L10-4(lines 10 12) no Hoare annotation was computed. [2018-11-06 22:45:31,477 INFO L425 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-11-06 22:45:31,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:31 BoogieIcfgContainer [2018-11-06 22:45:31,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:45:31,483 INFO L168 Benchmark]: Toolchain (without parser) took 1234.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -735.1 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:45:31,486 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:45:31,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-06 22:45:31,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:45:31,488 INFO L168 Benchmark]: Boogie Preprocessor took 15.62 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:45:31,489 INFO L168 Benchmark]: RCFGBuilder took 270.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -776.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:45:31,490 INFO L168 Benchmark]: TraceAbstraction took 658.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2018-11-06 22:45:31,495 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.09 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 27.28 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 15.62 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 270.33 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -776.2 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 658.49 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 2]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17 SDtfs, 1 SDslu, 7 SDs, 0 SdLazy, 3 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 3 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...