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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:06:26,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:06:26,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:06:26,472 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:06:26,473 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:06:26,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:06:26,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:06:26,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:06:26,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:06:26,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:06:26,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:06:26,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:06:26,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:06:26,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:06:26,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:06:26,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:06:26,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:06:26,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:06:26,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:06:26,510 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:06:26,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:06:26,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:06:26,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:06:26,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:06:26,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:06:26,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:06:26,537 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:06:26,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:06:26,540 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 [2019-10-15 01:06:26,576 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:06:26,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:06:26,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:06:26,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:06:26,581 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:06:26,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:06:26,581 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:06:26,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:06:26,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:06:26,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:06:26,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:06:26,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:06:26,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:06:26,584 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:06:26,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:06:26,585 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:06:26,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:06:26,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:06:26,586 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:06:26,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:06:26,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:06:26,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:26,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:06:26,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:06:26,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:06:26,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:06:26,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:06:26,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:06:26,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:06:26,879 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:06:26,892 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:06:26,896 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:06:26,897 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:06:26,897 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:06:26,898 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2019-10-15 01:06:26,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2689944ed/74254bc58d554deeb1029ba6d5cb3623/FLAG8ae67f673 [2019-10-15 01:06:27,424 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:06:27,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2019-10-15 01:06:27,432 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2689944ed/74254bc58d554deeb1029ba6d5cb3623/FLAG8ae67f673 [2019-10-15 01:06:27,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2689944ed/74254bc58d554deeb1029ba6d5cb3623 [2019-10-15 01:06:27,779 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:06:27,781 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:06:27,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:27,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:06:27,785 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:06:27,786 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:27" (1/1) ... [2019-10-15 01:06:27,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da11249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27, skipping insertion in model container [2019-10-15 01:06:27,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:27" (1/1) ... [2019-10-15 01:06:27,796 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:06:27,811 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:06:27,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:27,962 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:06:27,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:27,987 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:06:27,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27 WrapperNode [2019-10-15 01:06:27,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:27,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:06:27,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:06:27,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:06:27,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27" (1/1) ... [2019-10-15 01:06:27,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27" (1/1) ... [2019-10-15 01:06:28,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27" (1/1) ... [2019-10-15 01:06:28,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27" (1/1) ... [2019-10-15 01:06:28,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27" (1/1) ... [2019-10-15 01:06:28,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27" (1/1) ... [2019-10-15 01:06:28,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27" (1/1) ... [2019-10-15 01:06:28,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:06:28,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:06:28,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:06:28,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:06:28,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27" (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 [2019-10-15 01:06:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:06:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:06:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:06:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-15 01:06:28,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-15 01:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:06:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:06:28,302 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:06:28,302 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-15 01:06:28,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:28 BoogieIcfgContainer [2019-10-15 01:06:28,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:06:28,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:06:28,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:06:28,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:06:28,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:06:27" (1/3) ... [2019-10-15 01:06:28,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b5ce8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:28, skipping insertion in model container [2019-10-15 01:06:28,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:27" (2/3) ... [2019-10-15 01:06:28,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b5ce8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:28, skipping insertion in model container [2019-10-15 01:06:28,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:28" (3/3) ... [2019-10-15 01:06:28,312 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2019-10-15 01:06:28,322 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:06:28,330 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:06:28,343 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:06:28,374 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:06:28,375 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:06:28,375 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:06:28,375 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:06:28,375 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:06:28,375 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:06:28,375 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:06:28,376 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:06:28,400 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-15 01:06:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:28,408 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:28,409 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:28,411 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:28,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:28,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1783967560, now seen corresponding path program 1 times [2019-10-15 01:06:28,433 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:28,434 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402171508] [2019-10-15 01:06:28,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:28,437 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:28,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:28,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:28,568 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402171508] [2019-10-15 01:06:28,569 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:28,569 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:06:28,569 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137286504] [2019-10-15 01:06:28,573 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:06:28,574 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:28,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:06:28,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:28,588 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-10-15 01:06:28,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:28,614 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2019-10-15 01:06:28,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:06:28,616 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:06:28,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:28,624 INFO L225 Difference]: With dead ends: 35 [2019-10-15 01:06:28,624 INFO L226 Difference]: Without dead ends: 17 [2019-10-15 01:06:28,628 INFO L600 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 [2019-10-15 01:06:28,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-15 01:06:28,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-15 01:06:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-15 01:06:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-15 01:06:28,670 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-10-15 01:06:28,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:28,671 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-15 01:06:28,671 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:06:28,671 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-15 01:06:28,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 01:06:28,672 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:28,672 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:28,673 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:28,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:28,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1698359207, now seen corresponding path program 1 times [2019-10-15 01:06:28,674 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:28,674 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716376205] [2019-10-15 01:06:28,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:28,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:28,675 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:28,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:28,795 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716376205] [2019-10-15 01:06:28,798 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:28,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:06:28,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705340543] [2019-10-15 01:06:28,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:06:28,804 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:28,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:06:28,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:06:28,808 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2019-10-15 01:06:28,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:28,902 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2019-10-15 01:06:28,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:06:28,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-10-15 01:06:28,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:28,906 INFO L225 Difference]: With dead ends: 17 [2019-10-15 01:06:28,906 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:06:28,908 INFO L600 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 [2019-10-15 01:06:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:06:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:06:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:06:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:06:28,910 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-15 01:06:28,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:28,911 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:06:28,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:06:28,912 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:06:28,912 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:06:28,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:06:29,003 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:29,004 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:29,004 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:29,004 INFO L439 ceAbstractionStarter]: At program point evalENTRY(lines 12 19) the Hoare annotation is: (or (= 0 ~x~0) (not (= 0 |old(~x~0)|))) [2019-10-15 01:06:29,005 INFO L443 ceAbstractionStarter]: For program point L14-1(lines 12 19) no Hoare annotation was computed. [2019-10-15 01:06:29,005 INFO L443 ceAbstractionStarter]: For program point evalEXIT(lines 12 19) no Hoare annotation was computed. [2019-10-15 01:06:29,005 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:29,005 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (= 0 ~x~0) [2019-10-15 01:06:29,006 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:29,006 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:29,006 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed. [2019-10-15 01:06:29,007 INFO L439 ceAbstractionStarter]: At program point L27(lines 22 33) the Hoare annotation is: (or (= 0 ~x~0) (not (= 0 |old(~x~0)|))) [2019-10-15 01:06:29,007 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (or (= 0 ~x~0) (not (= 0 |old(~x~0)|))) [2019-10-15 01:06:29,007 INFO L439 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (or (= 0 ~x~0) (not (= 0 |old(~x~0)|))) [2019-10-15 01:06:29,007 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 22 33) no Hoare annotation was computed. [2019-10-15 01:06:29,008 INFO L439 ceAbstractionStarter]: At program point L24-1(lines 24 28) the Hoare annotation is: (not (= 0 |old(~x~0)|)) [2019-10-15 01:06:29,008 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 22 33) no Hoare annotation was computed. [2019-10-15 01:06:29,008 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 01:06:29,008 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 01:06:29,009 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:06:29,009 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 01:06:29,009 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 01:06:29,009 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 01:06:29,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:29 BoogieIcfgContainer [2019-10-15 01:06:29,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:29,019 INFO L168 Benchmark]: Toolchain (without parser) took 1236.84 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 135.9 MB in the end (delta: -33.5 MB). Peak memory consumption was 29.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:29,020 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:06:29,021 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.34 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:29,022 INFO L168 Benchmark]: Boogie Preprocessor took 109.16 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:29,023 INFO L168 Benchmark]: RCFGBuilder took 206.28 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 171.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:29,024 INFO L168 Benchmark]: TraceAbstraction took 710.80 ms. Allocated memory is still 202.4 MB. Free memory was 170.9 MB in the beginning and 135.9 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:29,028 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 139.5 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 206.34 ms. Allocated memory is still 139.5 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 109.16 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 92.7 MB in the beginning and 181.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 206.28 ms. Allocated memory is still 202.4 MB. Free memory was 181.1 MB in the beginning and 171.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 710.80 ms. Allocated memory is still 202.4 MB. Free memory was 170.9 MB in the beginning and 135.9 MB in the end (delta: 34.9 MB). Peak memory consumption was 34.9 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 14 SDslu, 22 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 42 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 406 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...