java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-c6af20d [2019-09-03 19:21:33,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-03 19:21:33,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-03 19:21:33,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-03 19:21:33,545 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-03 19:21:33,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-03 19:21:33,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-03 19:21:33,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-03 19:21:33,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-03 19:21:33,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-03 19:21:33,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-03 19:21:33,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-03 19:21:33,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-03 19:21:33,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-03 19:21:33,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-03 19:21:33,556 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-03 19:21:33,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-03 19:21:33,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-03 19:21:33,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-03 19:21:33,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-03 19:21:33,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-03 19:21:33,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-03 19:21:33,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-03 19:21:33,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-03 19:21:33,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-03 19:21:33,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-03 19:21:33,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-03 19:21:33,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-03 19:21:33,578 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 [2019-09-03 19:21:33,592 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-03 19:21:33,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-03 19:21:33,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-03 19:21:33,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-03 19:21:33,594 INFO L138 SettingsManager]: * Use SBE=true [2019-09-03 19:21:33,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-03 19:21:33,594 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-03 19:21:33,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-03 19:21:33,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-03 19:21:33,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-03 19:21:33,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-03 19:21:33,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-03 19:21:33,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-03 19:21:33,595 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-03 19:21:33,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-03 19:21:33,596 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-03 19:21:33,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-03 19:21:33,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-03 19:21:33,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-03 19:21:33,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-03 19:21:33,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-03 19:21:33,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-03 19:21:33,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-03 19:21:33,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-03 19:21:33,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-03 19:21:33,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-03 19:21:33,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-03 19:21:33,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-03 19:21:33,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-03 19:21:33,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-03 19:21:33,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-03 19:21:33,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-03 19:21:33,646 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-03 19:21:33,646 INFO L275 PluginConnector]: CDTParser initialized [2019-09-03 19:21:33,647 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2019-09-03 19:21:33,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8435ab8/d1cd46e3e0834c28aad01e64b230554e/FLAG47f46d96b [2019-09-03 19:21:34,148 INFO L306 CDTParser]: Found 1 translation units. [2019-09-03 19:21:34,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c [2019-09-03 19:21:34,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8435ab8/d1cd46e3e0834c28aad01e64b230554e/FLAG47f46d96b [2019-09-03 19:21:34,537 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8435ab8/d1cd46e3e0834c28aad01e64b230554e [2019-09-03 19:21:34,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-03 19:21:34,549 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-03 19:21:34,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-03 19:21:34,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-03 19:21:34,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-03 19:21:34,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:21:34" (1/1) ... [2019-09-03 19:21:34,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d3b5404 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34, skipping insertion in model container [2019-09-03 19:21:34,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.09 07:21:34" (1/1) ... [2019-09-03 19:21:34,565 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-03 19:21:34,582 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-03 19:21:34,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:21:34,801 INFO L188 MainTranslator]: Completed pre-run [2019-09-03 19:21:34,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-03 19:21:34,836 INFO L192 MainTranslator]: Completed translation [2019-09-03 19:21:34,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34 WrapperNode [2019-09-03 19:21:34,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-03 19:21:34,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-03 19:21:34,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-03 19:21:34,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-03 19:21:34,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34" (1/1) ... [2019-09-03 19:21:34,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34" (1/1) ... [2019-09-03 19:21:34,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34" (1/1) ... [2019-09-03 19:21:34,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34" (1/1) ... [2019-09-03 19:21:34,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34" (1/1) ... [2019-09-03 19:21:34,944 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34" (1/1) ... [2019-09-03 19:21:34,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34" (1/1) ... [2019-09-03 19:21:34,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-03 19:21:34,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-03 19:21:34,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-03 19:21:34,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-03 19:21:34,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34" (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 [2019-09-03 19:21:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-03 19:21:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-03 19:21:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-03 19:21:35,006 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-09-03 19:21:35,007 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-03 19:21:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-03 19:21:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-03 19:21:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-03 19:21:35,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-03 19:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-09-03 19:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-03 19:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-03 19:21:35,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-03 19:21:35,189 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-03 19:21:35,189 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-03 19:21:35,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:21:35 BoogieIcfgContainer [2019-09-03 19:21:35,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-03 19:21:35,197 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-03 19:21:35,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-03 19:21:35,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-03 19:21:35,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.09 07:21:34" (1/3) ... [2019-09-03 19:21:35,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b37dd48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:21:35, skipping insertion in model container [2019-09-03 19:21:35,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.09 07:21:34" (2/3) ... [2019-09-03 19:21:35,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b37dd48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.09 07:21:35, skipping insertion in model container [2019-09-03 19:21:35,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.09 07:21:35" (3/3) ... [2019-09-03 19:21:35,223 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2019-09-03 19:21:35,249 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-03 19:21:35,266 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-03 19:21:35,296 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-03 19:21:35,331 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-03 19:21:35,332 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-03 19:21:35,332 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-03 19:21:35,332 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-03 19:21:35,332 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-03 19:21:35,333 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-03 19:21:35,333 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-03 19:21:35,333 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-03 19:21:35,333 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-03 19:21:35,348 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-09-03 19:21:35,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 19:21:35,353 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:21:35,354 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:21:35,357 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:21:35,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:21:35,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1873481772, now seen corresponding path program 1 times [2019-09-03 19:21:35,364 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:21:35,365 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:21:35,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:35,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:21:35,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:35,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:21:35,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:21:35,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:21:35,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-03 19:21:35,476 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-03 19:21:35,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-03 19:21:35,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-03 19:21:35,490 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-09-03 19:21:35,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:21:35,513 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-09-03 19:21:35,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-03 19:21:35,514 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-09-03 19:21:35,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:21:35,525 INFO L225 Difference]: With dead ends: 35 [2019-09-03 19:21:35,526 INFO L226 Difference]: Without dead ends: 18 [2019-09-03 19:21:35,529 INFO L628 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 [2019-09-03 19:21:35,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-09-03 19:21:35,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-09-03 19:21:35,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-09-03 19:21:35,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-09-03 19:21:35,573 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2019-09-03 19:21:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:21:35,574 INFO L475 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-09-03 19:21:35,574 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-03 19:21:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-09-03 19:21:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-09-03 19:21:35,576 INFO L391 BasicCegarLoop]: Found error trace [2019-09-03 19:21:35,576 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-03 19:21:35,577 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-03 19:21:35,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-03 19:21:35,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1862399520, now seen corresponding path program 1 times [2019-09-03 19:21:35,577 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-03 19:21:35,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-03 19:21:35,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:35,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-03 19:21:35,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-03 19:21:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-03 19:21:35,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-03 19:21:35,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-03 19:21:35,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-03 19:21:35,699 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-03 19:21:35,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-03 19:21:35,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-03 19:21:35,700 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-09-03 19:21:35,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-03 19:21:35,783 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2019-09-03 19:21:35,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-03 19:21:35,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-09-03 19:21:35,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-03 19:21:35,786 INFO L225 Difference]: With dead ends: 18 [2019-09-03 19:21:35,786 INFO L226 Difference]: Without dead ends: 0 [2019-09-03 19:21:35,787 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-03 19:21:35,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-03 19:21:35,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-03 19:21:35,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-03 19:21:35,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-03 19:21:35,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-09-03 19:21:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-03 19:21:35,789 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-03 19:21:35,790 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-03 19:21:35,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-03 19:21:35,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-03 19:21:35,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-03 19:21:35,870 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:21:35,871 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:21:35,871 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:21:35,871 INFO L443 ceAbstractionStarter]: For program point fooEXIT(lines 15 17) no Hoare annotation was computed. [2019-09-03 19:21:35,871 INFO L446 ceAbstractionStarter]: At program point fooENTRY(lines 15 17) the Hoare annotation is: true [2019-09-03 19:21:35,872 INFO L443 ceAbstractionStarter]: For program point fooFINAL(lines 15 17) no Hoare annotation was computed. [2019-09-03 19:21:35,872 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-03 19:21:35,872 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2019-09-03 19:21:35,872 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-03 19:21:35,873 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-03 19:21:35,873 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 19 27) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (<= ~x~0 0)) [2019-09-03 19:21:35,873 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 19 27) no Hoare annotation was computed. [2019-09-03 19:21:35,873 INFO L446 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: true [2019-09-03 19:21:35,874 INFO L443 ceAbstractionStarter]: For program point L23(lines 23 24) no Hoare annotation was computed. [2019-09-03 19:21:35,874 INFO L446 ceAbstractionStarter]: At program point L24-1(lines 21 25) the Hoare annotation is: true [2019-09-03 19:21:35,874 INFO L446 ceAbstractionStarter]: At program point L23-1(line 23) the Hoare annotation is: true [2019-09-03 19:21:35,874 INFO L439 ceAbstractionStarter]: At program point L21-2(lines 21 25) the Hoare annotation is: (or (not (<= |old(~x~0)| 0)) (<= ~x~0 0)) [2019-09-03 19:21:35,875 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 19 27) no Hoare annotation was computed. [2019-09-03 19:21:35,875 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-03 19:21:35,875 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:21:35,875 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-03 19:21:35,876 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-03 19:21:35,876 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-03 19:21:35,876 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-03 19:21:35,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.09 07:21:35 BoogieIcfgContainer [2019-09-03 19:21:35,884 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-03 19:21:35,887 INFO L168 Benchmark]: Toolchain (without parser) took 1337.49 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 87.4 MB in the beginning and 130.7 MB in the end (delta: -43.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:35,888 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-03 19:21:35,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.60 ms. Allocated memory is still 132.6 MB. Free memory was 87.2 MB in the beginning and 78.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:35,891 INFO L168 Benchmark]: Boogie Preprocessor took 109.13 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 78.0 MB in the beginning and 176.1 MB in the end (delta: -98.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:35,892 INFO L168 Benchmark]: RCFGBuilder took 249.73 ms. Allocated memory is still 199.2 MB. Free memory was 176.1 MB in the beginning and 163.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:35,892 INFO L168 Benchmark]: TraceAbstraction took 686.94 ms. Allocated memory is still 199.2 MB. Free memory was 163.8 MB in the beginning and 130.7 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 7.1 GB. [2019-09-03 19:21:35,896 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 287.60 ms. Allocated memory is still 132.6 MB. Free memory was 87.2 MB in the beginning and 78.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.13 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 78.0 MB in the beginning and 176.1 MB in the end (delta: -98.1 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 249.73 ms. Allocated memory is still 199.2 MB. Free memory was 176.1 MB in the beginning and 163.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 686.94 ms. Allocated memory is still 199.2 MB. Free memory was 163.8 MB in the beginning and 130.7 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 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: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 6 SDslu, 41 SDs, 0 SdLazy, 4 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 10 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 26 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 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...