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/loops/while_infinite_loop_3_true-unreach-call_false-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:40:16,461 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:40:16,464 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:40:16,481 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:40:16,481 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:40:16,482 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:40:16,484 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:40:16,488 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:40:16,491 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:40:16,492 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:40:16,493 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:40:16,493 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:40:16,494 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:40:16,495 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:40:16,497 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:40:16,497 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:40:16,498 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:40:16,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:40:16,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:40:16,504 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:40:16,505 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:40:16,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:40:16,509 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 22:40:16,518 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 22:40:16,533 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:40:16,533 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:40:16,534 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:40:16,534 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:40:16,535 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:40:16,535 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:40:16,535 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:40:16,536 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:40:16,536 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:40:16,536 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:40:16,536 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:40:16,536 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:40:16,537 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:40:16,537 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:40:16,537 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:40:16,537 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:40:16,537 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:40:16,538 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:40:16,538 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:40:16,538 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:40:16,538 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:40:16,539 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:40:16,539 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:40:16,539 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:40:16,539 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:40:16,539 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:40:16,540 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:40:16,540 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:40:16,586 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:40:16,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:40:16,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:40:16,610 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:40:16,611 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:40:16,612 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3_true-unreach-call_false-termination.i [2018-11-06 22:40:16,677 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c6fcd1a7/67869c555b6c40ba9d4145209674d0a4/FLAG20fcfc711 [2018-11-06 22:40:17,105 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:40:17,106 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3_true-unreach-call_false-termination.i [2018-11-06 22:40:17,112 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c6fcd1a7/67869c555b6c40ba9d4145209674d0a4/FLAG20fcfc711 [2018-11-06 22:40:17,128 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c6fcd1a7/67869c555b6c40ba9d4145209674d0a4 [2018-11-06 22:40:17,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:40:17,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:40:17,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:40:17,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:40:17,147 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:40:17,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b4be575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17, skipping insertion in model container [2018-11-06 22:40:17,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:40:17,184 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:40:17,433 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:40:17,441 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:40:17,460 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:40:17,480 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:40:17,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17 WrapperNode [2018-11-06 22:40:17,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:40:17,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:40:17,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:40:17,482 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:40:17,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,499 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:40:17,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:40:17,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:40:17,516 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:40:17,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (1/1) ... [2018-11-06 22:40:17,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:40:17,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:40:17,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:40:17,535 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:40:17,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (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 22:40:17,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:40:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:40:17,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-06 22:40:17,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-06 22:40:17,860 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:40:17,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:17 BoogieIcfgContainer [2018-11-06 22:40:17,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:40:17,862 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:40:17,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:40:17,866 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:40:17,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:40:17" (1/3) ... [2018-11-06 22:40:17,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d8ebca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:17, skipping insertion in model container [2018-11-06 22:40:17,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:17" (2/3) ... [2018-11-06 22:40:17,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d8ebca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:17, skipping insertion in model container [2018-11-06 22:40:17,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:17" (3/3) ... [2018-11-06 22:40:17,870 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3_true-unreach-call_false-termination.i [2018-11-06 22:40:17,878 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:40:17,885 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:40:17,900 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:40:17,933 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:40:17,934 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:40:17,934 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:40:17,934 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:40:17,934 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:40:17,934 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:40:17,934 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:40:17,935 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:40:17,935 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:40:17,951 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-06 22:40:17,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-06 22:40:17,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:40:17,958 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:40:17,960 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:40:17,966 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:40:17,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1829300656, now seen corresponding path program 1 times [2018-11-06 22:40:17,969 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:40:17,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:40:18,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:40:18,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:40:18,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:40:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:40:18,087 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 22:40:18,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:40:18,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:40:18,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:40:18,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:40:18,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:40:18,109 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-11-06 22:40:18,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:40:18,135 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2018-11-06 22:40:18,135 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:40:18,136 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2018-11-06 22:40:18,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:40:18,145 INFO L225 Difference]: With dead ends: 31 [2018-11-06 22:40:18,145 INFO L226 Difference]: Without dead ends: 14 [2018-11-06 22:40:18,148 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 22:40:18,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-11-06 22:40:18,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-11-06 22:40:18,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-06 22:40:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-11-06 22:40:18,188 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2018-11-06 22:40:18,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:40:18,188 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-11-06 22:40:18,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:40:18,189 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-11-06 22:40:18,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-06 22:40:18,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:40:18,190 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:40:18,190 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:40:18,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:40:18,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1108448733, now seen corresponding path program 1 times [2018-11-06 22:40:18,191 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:40:18,191 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:40:18,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:40:18,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:40:18,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:40:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:40:18,483 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 22:40:18,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:40:18,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 22:40:18,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:40:18,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:40:18,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:40:18,487 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 5 states. [2018-11-06 22:40:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:40:18,729 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2018-11-06 22:40:18,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:40:18,730 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-06 22:40:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:40:18,730 INFO L225 Difference]: With dead ends: 14 [2018-11-06 22:40:18,731 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 22:40:18,732 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:40:18,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 22:40:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 22:40:18,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 22:40:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 22:40:18,734 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-11-06 22:40:18,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:40:18,734 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 22:40:18,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:40:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 22:40:18,735 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 22:40:18,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 22:40:18,803 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-06 22:40:18,804 INFO L421 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: (= ~x~0 0) [2018-11-06 22:40:18,804 INFO L421 ceAbstractionStarter]: At program point L27-1(lines 24 28) the Hoare annotation is: (= ~x~0 0) [2018-11-06 22:40:18,804 INFO L421 ceAbstractionStarter]: At program point L32(lines 22 33) the Hoare annotation is: false [2018-11-06 22:40:18,804 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-11-06 22:40:18,804 INFO L425 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2018-11-06 22:40:18,805 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-11-06 22:40:18,805 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-06 22:40:18,805 INFO L425 ceAbstractionStarter]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2018-11-06 22:40:18,805 INFO L421 ceAbstractionStarter]: At program point L24-3(lines 24 28) the Hoare annotation is: false [2018-11-06 22:40:18,805 INFO L421 ceAbstractionStarter]: At program point L14loopEntry(lines 14 17) the Hoare annotation is: (= ~x~0 0) [2018-11-06 22:40:18,806 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 17) no Hoare annotation was computed. [2018-11-06 22:40:18,806 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 12 19) the Hoare annotation is: (= ~x~0 0) [2018-11-06 22:40:18,806 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-06 22:40:18,806 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-06 22:40:18,807 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-06 22:40:18,807 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-06 22:40:18,807 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-06 22:40:18,807 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-06 22:40:18,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:40:18 BoogieIcfgContainer [2018-11-06 22:40:18,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:40:18,828 INFO L168 Benchmark]: Toolchain (without parser) took 1690.06 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -713.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. [2018-11-06 22:40:18,831 INFO L168 Benchmark]: CDTParser took 0.23 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 22:40:18,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.40 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 22:40:18,837 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.07 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 22:40:18,838 INFO L168 Benchmark]: Boogie Preprocessor took 18.47 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 22:40:18,839 INFO L168 Benchmark]: RCFGBuilder took 327.36 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -758.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:40:18,840 INFO L168 Benchmark]: TraceAbstraction took 963.78 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2018-11-06 22:40:18,848 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.40 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 33.07 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 18.47 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 327.36 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -758.6 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 963.78 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 23 SDtfs, 13 SDslu, 15 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s 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 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, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 15 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 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...