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/bitvector/parity.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 12:52:27,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 12:52:27,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 12:52:27,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 12:52:27,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 12:52:27,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 12:52:27,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 12:52:27,542 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 12:52:27,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 12:52:27,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 12:52:27,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 12:52:27,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 12:52:27,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 12:52:27,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 12:52:27,549 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 12:52:27,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 12:52:27,551 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 12:52:27,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 12:52:27,554 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 12:52:27,556 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 12:52:27,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 12:52:27,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 12:52:27,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 12:52:27,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 12:52:27,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 12:52:27,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 12:52:27,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 12:52:27,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 12:52:27,575 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 [2019-09-07 12:52:27,593 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 12:52:27,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 12:52:27,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 12:52:27,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 12:52:27,596 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 12:52:27,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 12:52:27,596 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 12:52:27,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 12:52:27,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 12:52:27,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 12:52:27,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 12:52:27,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 12:52:27,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 12:52:27,598 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 12:52:27,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 12:52:27,598 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 12:52:27,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 12:52:27,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 12:52:27,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 12:52:27,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 12:52:27,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 12:52:27,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 12:52:27,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 12:52:27,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 12:52:27,601 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 12:52:27,601 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 12:52:27,602 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 12:52:27,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 12:52:27,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 12:52:27,635 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 12:52:27,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 12:52:27,649 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 12:52:27,651 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 12:52:27,651 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 12:52:27,652 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/parity.i [2019-09-07 12:52:27,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbe15557/4bead62a9c994e8da3084c2201633f20/FLAG0958cd627 [2019-09-07 12:52:28,123 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 12:52:28,124 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/parity.i [2019-09-07 12:52:28,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbe15557/4bead62a9c994e8da3084c2201633f20/FLAG0958cd627 [2019-09-07 12:52:28,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fbe15557/4bead62a9c994e8da3084c2201633f20 [2019-09-07 12:52:28,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 12:52:28,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 12:52:28,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 12:52:28,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 12:52:28,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 12:52:28,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:52:28" (1/1) ... [2019-09-07 12:52:28,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b33bf0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28, skipping insertion in model container [2019-09-07 12:52:28,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 12:52:28" (1/1) ... [2019-09-07 12:52:28,560 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 12:52:28,579 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 12:52:28,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:52:28,743 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 12:52:28,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 12:52:28,777 INFO L192 MainTranslator]: Completed translation [2019-09-07 12:52:28,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28 WrapperNode [2019-09-07 12:52:28,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 12:52:28,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 12:52:28,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 12:52:28,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 12:52:28,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28" (1/1) ... [2019-09-07 12:52:28,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28" (1/1) ... [2019-09-07 12:52:28,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28" (1/1) ... [2019-09-07 12:52:28,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28" (1/1) ... [2019-09-07 12:52:28,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28" (1/1) ... [2019-09-07 12:52:28,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28" (1/1) ... [2019-09-07 12:52:28,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28" (1/1) ... [2019-09-07 12:52:28,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 12:52:28,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 12:52:28,896 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 12:52:28,896 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 12:52:28,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28" (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 [2019-09-07 12:52:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 12:52:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 12:52:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-07 12:52:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 12:52:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 12:52:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-07 12:52:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-07 12:52:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-07 12:52:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-09-07 12:52:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-09-07 12:52:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 12:52:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 12:52:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 12:52:29,234 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 12:52:29,234 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 12:52:29,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:52:29 BoogieIcfgContainer [2019-09-07 12:52:29,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 12:52:29,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 12:52:29,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 12:52:29,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 12:52:29,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 12:52:28" (1/3) ... [2019-09-07 12:52:29,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5e4086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:52:29, skipping insertion in model container [2019-09-07 12:52:29,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 12:52:28" (2/3) ... [2019-09-07 12:52:29,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f5e4086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 12:52:29, skipping insertion in model container [2019-09-07 12:52:29,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 12:52:29" (3/3) ... [2019-09-07 12:52:29,246 INFO L109 eAbstractionObserver]: Analyzing ICFG parity.i [2019-09-07 12:52:29,257 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 12:52:29,267 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 12:52:29,286 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 12:52:29,328 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 12:52:29,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 12:52:29,329 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 12:52:29,329 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 12:52:29,329 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 12:52:29,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 12:52:29,330 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 12:52:29,330 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 12:52:29,330 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 12:52:29,353 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-07 12:52:29,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-07 12:52:29,359 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:29,359 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:52:29,361 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:29,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:29,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1135268867, now seen corresponding path program 1 times [2019-09-07 12:52:29,369 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:29,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:29,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:29,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:29,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:29,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:52:29,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:29,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-07 12:52:29,485 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-07 12:52:29,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-07 12:52:29,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-07 12:52:29,499 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-07 12:52:29,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:29,519 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2019-09-07 12:52:29,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-07 12:52:29,520 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2019-09-07 12:52:29,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:29,528 INFO L225 Difference]: With dead ends: 36 [2019-09-07 12:52:29,528 INFO L226 Difference]: Without dead ends: 15 [2019-09-07 12:52:29,532 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 [2019-09-07 12:52:29,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-09-07 12:52:29,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-09-07 12:52:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-09-07 12:52:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2019-09-07 12:52:29,570 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2019-09-07 12:52:29,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:29,571 INFO L475 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2019-09-07 12:52:29,571 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-07 12:52:29,571 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2019-09-07 12:52:29,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-07 12:52:29,572 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:29,572 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:52:29,573 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:29,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:29,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1987092530, now seen corresponding path program 1 times [2019-09-07 12:52:29,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:29,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:29,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:29,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:29,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 12:52:29,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 12:52:29,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 12:52:29,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 12:52:29,755 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 12:52:29,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 12:52:29,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-07 12:52:29,756 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 6 states. [2019-09-07 12:52:29,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 12:52:29,855 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-09-07 12:52:29,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 12:52:29,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-09-07 12:52:29,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 12:52:29,858 INFO L225 Difference]: With dead ends: 34 [2019-09-07 12:52:29,859 INFO L226 Difference]: Without dead ends: 21 [2019-09-07 12:52:29,860 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-07 12:52:29,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-07 12:52:29,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-09-07 12:52:29,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-07 12:52:29,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2019-09-07 12:52:29,868 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2019-09-07 12:52:29,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 12:52:29,869 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2019-09-07 12:52:29,869 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 12:52:29,869 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2019-09-07 12:52:29,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-09-07 12:52:29,870 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 12:52:29,870 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 12:52:29,871 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 12:52:29,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 12:52:29,871 INFO L82 PathProgramCache]: Analyzing trace with hash 1988939572, now seen corresponding path program 1 times [2019-09-07 12:52:29,871 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 12:52:29,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 12:52:29,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:29,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 12:52:29,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 12:52:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-07 12:52:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-07 12:52:29,924 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-07 12:52:29,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.09 12:52:29 BoogieIcfgContainer [2019-09-07 12:52:29,947 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-07 12:52:29,950 INFO L168 Benchmark]: Toolchain (without parser) took 1406.68 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 85.8 MB in the beginning and 126.0 MB in the end (delta: -40.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2019-09-07 12:52:29,951 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-07 12:52:29,952 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.96 ms. Allocated memory is still 138.9 MB. Free memory was 85.6 MB in the beginning and 75.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-09-07 12:52:29,954 INFO L168 Benchmark]: Boogie Preprocessor took 116.91 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 75.5 MB in the beginning and 175.5 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-09-07 12:52:29,956 INFO L168 Benchmark]: RCFGBuilder took 339.76 ms. Allocated memory is still 198.7 MB. Free memory was 175.5 MB in the beginning and 163.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-09-07 12:52:29,957 INFO L168 Benchmark]: TraceAbstraction took 710.50 ms. Allocated memory is still 198.7 MB. Free memory was 162.5 MB in the beginning and 126.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2019-09-07 12:52:29,963 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 103.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 234.96 ms. Allocated memory is still 138.9 MB. Free memory was 85.6 MB in the beginning and 75.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.91 ms. Allocated memory was 138.9 MB in the beginning and 198.7 MB in the end (delta: 59.8 MB). Free memory was 75.5 MB in the beginning and 175.5 MB in the end (delta: -100.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.76 ms. Allocated memory is still 198.7 MB. Free memory was 175.5 MB in the beginning and 163.1 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 710.50 ms. Allocated memory is still 198.7 MB. Free memory was 162.5 MB in the beginning and 126.0 MB in the end (delta: 36.5 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 43, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L23] unsigned int v = __VERIFIER_nondet_uint(); [L24] unsigned int v1; [L25] unsigned int v2; [L26] char parity1; [L27] char parity2; [L28] v1 = v [L29] parity1 = (char)0 VAL [parity1=0, v=0, v1=0] [L30] COND FALSE !(v1 != 0) VAL [parity1=0, v=0, v1=0] [L38] v2 = v [L39] parity2 = (char)0 [L40] v2 = v2 ^ (v2 >> 1u) [L41] v2 = v2 ^ (v2 >> 2u) [L42] v2 = (v2 & 286331153U) * 286331153U VAL [parity1=0, parity2=0, v=0, v1=0, v2=0] [L43] COND FALSE !(((v2 >> 28u) & 1u) == 0) [L46] parity2 = (char)1 VAL [parity1=0, parity2=1, v=0, v1=0, v2=0] [L48] CALL __VERIFIER_assert(parity1 == parity2) VAL [\old(cond)=0] [L5] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 5 SDslu, 54 SDs, 0 SdLazy, 17 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 594 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...