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/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:02:39,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:02:39,222 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:02:39,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:02:39,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:02:39,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:02:39,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:02:39,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:02:39,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:02:39,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:02:39,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:02:39,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:02:39,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:02:39,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:02:39,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:02:39,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:02:39,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:02:39,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:02:39,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:02:39,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:02:39,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:02:39,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:02:39,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:02:39,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:02:39,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 21:02:39,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:02:39,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:02:39,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:02:39,273 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 [2019-10-13 21:02:39,296 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:02:39,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:02:39,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:02:39,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:02:39,299 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:02:39,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:02:39,299 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:02:39,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:02:39,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:02:39,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:02:39,301 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:02:39,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:02:39,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:02:39,302 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:02:39,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:02:39,302 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:02:39,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:02:39,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:02:39,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:02:39,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:02:39,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:02:39,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:02:39,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:02:39,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:02:39,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:02:39,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:02:39,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:02:39,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:02:39,305 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 [2019-10-13 21:02:39,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:02:39,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:02:39,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:02:39,584 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:02:39,584 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:02:39,585 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2019-10-13 21:02:39,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc69e03a/f77c9084e0f64b07b5fac18f4ac0db6f/FLAG86c0dd8f9 [2019-10-13 21:02:40,187 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:02:40,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2019-10-13 21:02:40,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc69e03a/f77c9084e0f64b07b5fac18f4ac0db6f/FLAG86c0dd8f9 [2019-10-13 21:02:40,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cc69e03a/f77c9084e0f64b07b5fac18f4ac0db6f [2019-10-13 21:02:40,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:02:40,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:02:40,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:40,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:02:40,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:02:40,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:40" (1/1) ... [2019-10-13 21:02:40,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a266f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40, skipping insertion in model container [2019-10-13 21:02:40,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:02:40" (1/1) ... [2019-10-13 21:02:40,626 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:02:40,640 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:02:40,799 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:40,811 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:02:40,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:02:40,840 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:02:40,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40 WrapperNode [2019-10-13 21:02:40,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:02:40,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:02:40,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:02:40,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:02:40,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40" (1/1) ... [2019-10-13 21:02:40,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40" (1/1) ... [2019-10-13 21:02:40,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40" (1/1) ... [2019-10-13 21:02:40,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40" (1/1) ... [2019-10-13 21:02:40,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40" (1/1) ... [2019-10-13 21:02:40,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40" (1/1) ... [2019-10-13 21:02:40,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40" (1/1) ... [2019-10-13 21:02:40,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:02:40,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:02:40,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:02:40,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:02:40,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40" (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 [2019-10-13 21:02:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:02:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:02:41,034 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:02:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:02:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:02:41,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:02:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:02:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:02:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:02:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:02:41,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:02:41,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:02:41,239 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:02:41,240 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 21:02:41,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:41 BoogieIcfgContainer [2019-10-13 21:02:41,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:02:41,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:02:41,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:02:41,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:02:41,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:02:40" (1/3) ... [2019-10-13 21:02:41,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e5d9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:41, skipping insertion in model container [2019-10-13 21:02:41,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:02:40" (2/3) ... [2019-10-13 21:02:41,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76e5d9dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:02:41, skipping insertion in model container [2019-10-13 21:02:41,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:02:41" (3/3) ... [2019-10-13 21:02:41,254 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2019-10-13 21:02:41,264 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:02:41,273 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:02:41,285 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:02:41,310 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:02:41,311 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:02:41,311 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:02:41,311 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:02:41,311 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:02:41,311 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:02:41,312 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:02:41,312 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:02:41,328 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-13 21:02:41,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:02:41,335 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:41,336 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:41,339 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:41,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:41,345 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2019-10-13 21:02:41,354 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:41,354 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802335717] [2019-10-13 21:02:41,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:41,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:41,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:02:41,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802335717] [2019-10-13 21:02:41,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:41,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:02:41,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585650710] [2019-10-13 21:02:41,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:02:41,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:41,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:02:41,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:02:41,605 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-10-13 21:02:41,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:41,683 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2019-10-13 21:02:41,683 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 21:02:41,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-10-13 21:02:41,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:41,695 INFO L225 Difference]: With dead ends: 34 [2019-10-13 21:02:41,695 INFO L226 Difference]: Without dead ends: 21 [2019-10-13 21:02:41,699 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:02:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-13 21:02:41,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2019-10-13 21:02:41,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-13 21:02:41,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-13 21:02:41,736 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2019-10-13 21:02:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:41,736 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-13 21:02:41,737 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:02:41,737 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-13 21:02:41,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:02:41,738 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:41,738 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:41,738 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:41,739 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2019-10-13 21:02:41,739 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:41,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425350037] [2019-10-13 21:02:41,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:41,740 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:41,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:41,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:02:41,885 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425350037] [2019-10-13 21:02:41,886 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:41,886 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:02:41,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277321066] [2019-10-13 21:02:41,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:02:41,889 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:41,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:02:41,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:02:41,890 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2019-10-13 21:02:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:42,012 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-13 21:02:42,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:02:42,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-10-13 21:02:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:42,014 INFO L225 Difference]: With dead ends: 23 [2019-10-13 21:02:42,015 INFO L226 Difference]: Without dead ends: 14 [2019-10-13 21:02:42,016 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-10-13 21:02:42,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-13 21:02:42,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-13 21:02:42,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-13 21:02:42,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2019-10-13 21:02:42,022 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2019-10-13 21:02:42,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:42,023 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2019-10-13 21:02:42,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:02:42,023 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2019-10-13 21:02:42,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 21:02:42,024 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:02:42,024 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:02:42,025 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:02:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:02:42,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2019-10-13 21:02:42,027 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:02:42,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680511192] [2019-10-13 21:02:42,028 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:42,030 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:02:42,030 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:02:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:02:42,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 21:02:42,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680511192] [2019-10-13 21:02:42,193 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:02:42,193 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 21:02:42,193 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889955824] [2019-10-13 21:02:42,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:02:42,194 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:02:42,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:02:42,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-13 21:02:42,195 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 7 states. [2019-10-13 21:02:42,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:02:42,243 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2019-10-13 21:02:42,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 21:02:42,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2019-10-13 21:02:42,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:02:42,244 INFO L225 Difference]: With dead ends: 14 [2019-10-13 21:02:42,244 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 21:02:42,244 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:02:42,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 21:02:42,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 21:02:42,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 21:02:42,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 21:02:42,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-13 21:02:42,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:02:42,246 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 21:02:42,246 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:02:42,246 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 21:02:42,246 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 21:02:42,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 21:02:42,277 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:02:42,277 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:02:42,278 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:02:42,278 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 21:02:42,278 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 21:02:42,278 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 21:02:42,278 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 21:02:42,279 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2019-10-13 21:02:42,279 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-13 21:02:42,279 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-10-13 21:02:42,279 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2019-10-13 21:02:42,279 INFO L443 ceAbstractionStarter]: For program point L15-2(line 15) no Hoare annotation was computed. [2019-10-13 21:02:42,280 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2019-10-13 21:02:42,280 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2019-10-13 21:02:42,280 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 29) the Hoare annotation is: true [2019-10-13 21:02:42,280 INFO L439 ceAbstractionStarter]: At program point L22(lines 12 29) the Hoare annotation is: false [2019-10-13 21:02:42,280 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed. [2019-10-13 21:02:42,281 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 20) no Hoare annotation was computed. [2019-10-13 21:02:42,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 09:02:42 BoogieIcfgContainer [2019-10-13 21:02:42,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 21:02:42,299 INFO L168 Benchmark]: Toolchain (without parser) took 1689.39 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 107.5 MB in the end (delta: -5.4 MB). Peak memory consumption was 58.5 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:42,301 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 21:02:42,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.58 ms. Allocated memory is still 137.9 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:42,305 INFO L168 Benchmark]: Boogie Preprocessor took 123.17 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.7 MB in the beginning and 179.2 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:42,307 INFO L168 Benchmark]: RCFGBuilder took 279.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 166.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:42,308 INFO L168 Benchmark]: TraceAbstraction took 1049.00 ms. Allocated memory is still 201.9 MB. Free memory was 166.4 MB in the beginning and 107.5 MB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2019-10-13 21:02:42,318 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.58 ms. Allocated memory is still 137.9 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.17 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.7 MB in the beginning and 179.2 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.2 MB in the beginning and 166.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1049.00 ms. Allocated memory is still 201.9 MB. Free memory was 166.4 MB in the beginning and 107.5 MB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: 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: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 28 SDslu, 72 SDs, 0 SdLazy, 73 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...