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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:58:51,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:58:51,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:58:51,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:58:51,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:58:51,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:58:51,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:58:51,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:58:51,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:58:51,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:58:51,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:58:51,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:58:51,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:58:51,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:58:51,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:58:51,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:58:51,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:58:51,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:58:51,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:58:51,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:58:51,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:58:51,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:58:51,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:58:51,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:58:51,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 22:58:51,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:58:51,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:58:51,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:58:51,273 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 22:58:51,291 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:58:51,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:58:51,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:58:51,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:58:51,294 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:58:51,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:58:51,294 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:58:51,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:58:51,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:58:51,295 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:58:51,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:58:51,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:58:51,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:58:51,297 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:58:51,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:58:51,298 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:58:51,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:58:51,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:58:51,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:58:51,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:58:51,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:58:51,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:58:51,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:58:51,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:58:51,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:58:51,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:58:51,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:58:51,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:58:51,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:58:51,584 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:58:51,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:58:51,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:58:51,602 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:58:51,603 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:58:51,603 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2019-10-13 22:58:51,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93a2630b6/f5b6a5e8025e4aa882ecaf69181cc7c4/FLAG2c7638d8d [2019-10-13 22:58:52,102 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:58:52,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2019-10-13 22:58:52,110 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93a2630b6/f5b6a5e8025e4aa882ecaf69181cc7c4/FLAG2c7638d8d [2019-10-13 22:58:52,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93a2630b6/f5b6a5e8025e4aa882ecaf69181cc7c4 [2019-10-13 22:58:52,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:58:52,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:58:52,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:58:52,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:58:52,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:58:52,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:52" (1/1) ... [2019-10-13 22:58:52,528 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13c5ffca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52, skipping insertion in model container [2019-10-13 22:58:52,528 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:52" (1/1) ... [2019-10-13 22:58:52,536 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:58:52,556 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:58:52,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:58:52,740 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:58:52,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:58:52,769 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:58:52,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52 WrapperNode [2019-10-13 22:58:52,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:58:52,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:58:52,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:58:52,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:58:52,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52" (1/1) ... [2019-10-13 22:58:52,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52" (1/1) ... [2019-10-13 22:58:52,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52" (1/1) ... [2019-10-13 22:58:52,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52" (1/1) ... [2019-10-13 22:58:52,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52" (1/1) ... [2019-10-13 22:58:52,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52" (1/1) ... [2019-10-13 22:58:52,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52" (1/1) ... [2019-10-13 22:58:52,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:58:52,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:58:52,891 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:58:52,892 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:58:52,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52" (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 22:58:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:58:52,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:58:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 22:58:52,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:58:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:58:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:58:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 22:58:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:58:52,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:58:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:58:52,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:58:53,199 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:58:53,200 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 22:58:53,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:53 BoogieIcfgContainer [2019-10-13 22:58:53,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:58:53,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:58:53,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:58:53,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:58:53,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:58:52" (1/3) ... [2019-10-13 22:58:53,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887d635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:53, skipping insertion in model container [2019-10-13 22:58:53,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:52" (2/3) ... [2019-10-13 22:58:53,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887d635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:53, skipping insertion in model container [2019-10-13 22:58:53,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:53" (3/3) ... [2019-10-13 22:58:53,210 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2019-10-13 22:58:53,222 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:58:53,231 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:58:53,244 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:58:53,275 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:58:53,275 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:58:53,275 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:58:53,276 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:58:53,276 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:58:53,276 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:58:53,276 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:58:53,276 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:58:53,301 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-10-13 22:58:53,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-13 22:58:53,307 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:58:53,308 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:58:53,311 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:58:53,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:58:53,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1719634852, now seen corresponding path program 1 times [2019-10-13 22:58:53,325 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:58:53,325 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390984778] [2019-10-13 22:58:53,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:53,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:53,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:58:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:53,541 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 22:58:53,542 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390984778] [2019-10-13 22:58:53,543 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:58:53,543 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:58:53,543 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771771306] [2019-10-13 22:58:53,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:58:53,549 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:58:53,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:58:53,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:58:53,572 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2019-10-13 22:58:53,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:58:53,706 INFO L93 Difference]: Finished difference Result 44 states and 57 transitions. [2019-10-13 22:58:53,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 22:58:53,710 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-10-13 22:58:53,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:58:53,726 INFO L225 Difference]: With dead ends: 44 [2019-10-13 22:58:53,727 INFO L226 Difference]: Without dead ends: 22 [2019-10-13 22:58:53,736 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:58:53,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-13 22:58:53,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-13 22:58:53,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-13 22:58:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-10-13 22:58:53,811 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2019-10-13 22:58:53,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:58:53,812 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-10-13 22:58:53,813 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:58:53,814 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-10-13 22:58:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 22:58:53,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:58:53,817 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:58:53,817 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:58:53,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:58:53,820 INFO L82 PathProgramCache]: Analyzing trace with hash 769813017, now seen corresponding path program 1 times [2019-10-13 22:58:53,820 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:58:53,820 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230707619] [2019-10-13 22:58:53,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:53,821 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:53,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:58:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:53,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:58:53,949 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230707619] [2019-10-13 22:58:53,950 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:58:53,950 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 22:58:53,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752609542] [2019-10-13 22:58:53,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 22:58:53,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:58:53,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 22:58:53,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:58:53,955 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2019-10-13 22:58:54,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:58:54,017 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2019-10-13 22:58:54,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 22:58:54,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2019-10-13 22:58:54,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:58:54,019 INFO L225 Difference]: With dead ends: 28 [2019-10-13 22:58:54,020 INFO L226 Difference]: Without dead ends: 26 [2019-10-13 22:58:54,021 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:58:54,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-13 22:58:54,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-13 22:58:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-13 22:58:54,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-10-13 22:58:54,029 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 16 [2019-10-13 22:58:54,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:58:54,029 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-10-13 22:58:54,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 22:58:54,030 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-10-13 22:58:54,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-13 22:58:54,031 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:58:54,031 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:58:54,032 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:58:54,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:58:54,032 INFO L82 PathProgramCache]: Analyzing trace with hash 889343161, now seen corresponding path program 1 times [2019-10-13 22:58:54,032 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:58:54,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410894527] [2019-10-13 22:58:54,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:54,033 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:54,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:58:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 22:58:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-13 22:58:54,143 INFO L168 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-13 22:58:54,144 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-13 22:58:54,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:58:54 BoogieIcfgContainer [2019-10-13 22:58:54,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 22:58:54,170 INFO L168 Benchmark]: Toolchain (without parser) took 1648.91 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 100.9 MB in the beginning and 122.0 MB in the end (delta: -21.2 MB). Peak memory consumption was 36.5 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:54,171 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 22:58:54,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.93 ms. Allocated memory is still 143.1 MB. Free memory was 100.6 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:54,173 INFO L168 Benchmark]: Boogie Preprocessor took 120.88 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 91.2 MB in the beginning and 179.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:54,174 INFO L168 Benchmark]: RCFGBuilder took 310.46 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 165.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:54,175 INFO L168 Benchmark]: TraceAbstraction took 964.71 ms. Allocated memory is still 200.8 MB. Free memory was 165.0 MB in the beginning and 122.0 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:54,179 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 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.93 ms. Allocated memory is still 143.1 MB. Free memory was 100.6 MB in the beginning and 91.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.88 ms. Allocated memory was 143.1 MB in the beginning and 200.8 MB in the end (delta: 57.7 MB). Free memory was 91.2 MB in the beginning and 179.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 310.46 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 165.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 964.71 ms. Allocated memory is still 200.8 MB. Free memory was 165.0 MB in the beginning and 122.0 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int idBitLength, material_length, nlen; [L12] int j, k; [L13] nlen = __VERIFIER_nondet_int() [L14] idBitLength = __VERIFIER_nondet_int() [L15] material_length = __VERIFIER_nondet_int() [L16] COND FALSE !(!( nlen == idBitLength / 32 )) [L17] j = 0 VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L17] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L18] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L18] RET __VERIFIER_assert( 0 <= j) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L19] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L19] RET __VERIFIER_assert( j < material_length ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L20] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L4] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L20] RET __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L21] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 41 SDtfs, 12 SDslu, 96 SDs, 0 SdLazy, 44 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 575 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 incorrect! Received shutdown request...