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-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:58:12,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:58:12,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:58:12,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:58:12,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:58:12,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:58:12,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:58:12,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:58:12,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:58:12,252 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:58:12,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:58:12,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:58:12,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:58:12,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:58:12,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:58:12,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:58:12,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:58:12,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:58:12,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:58:12,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:58:12,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:58:12,276 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:58:12,279 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:58:12,280 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:58:12,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 22:58:12,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:58:12,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:58:12,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:58:12,295 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 22:58:12,328 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:58:12,330 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:58:12,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:58:12,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:58:12,334 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:58:12,334 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:58:12,334 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:58:12,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:58:12,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:58:12,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:58:12,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:58:12,338 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:58:12,338 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:58:12,338 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:58:12,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:58:12,338 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:58:12,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:58:12,339 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:58:12,339 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:58:12,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:58:12,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:58:12,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:58:12,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:58:12,341 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:58:12,341 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:58:12,341 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:58:12,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:58:12,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:58:12,342 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 22:58:12,609 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:58:12,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:58:12,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:58:12,629 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:58:12,630 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:58:12,631 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-10-13 22:58:12,705 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e923a3b1e/8adf253c7bbf4d348016fcbc134ac199/FLAGf90d4bb58 [2019-10-13 22:58:13,214 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:58:13,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-10-13 22:58:13,222 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e923a3b1e/8adf253c7bbf4d348016fcbc134ac199/FLAGf90d4bb58 [2019-10-13 22:58:13,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e923a3b1e/8adf253c7bbf4d348016fcbc134ac199 [2019-10-13 22:58:13,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:58:13,586 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:58:13,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:58:13,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:58:13,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:58:13,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffa403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13, skipping insertion in model container [2019-10-13 22:58:13,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,602 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:58:13,621 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:58:13,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:58:13,838 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:58:13,855 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:58:13,866 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:58:13,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13 WrapperNode [2019-10-13 22:58:13,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:58:13,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:58:13,867 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:58:13,867 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:58:13,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,973 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (1/1) ... [2019-10-13 22:58:13,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:58:13,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:58:13,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:58:13,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:58:13,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (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 22:58:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:58:14,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:58:14,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:58:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:58:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:58:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 22:58:14,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:58:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:58:14,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:58:14,377 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:58:14,378 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:58:14,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:14 BoogieIcfgContainer [2019-10-13 22:58:14,380 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:58:14,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:58:14,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:58:14,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:58:14,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:58:13" (1/3) ... [2019-10-13 22:58:14,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664418fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:14, skipping insertion in model container [2019-10-13 22:58:14,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:58:13" (2/3) ... [2019-10-13 22:58:14,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@664418fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:58:14, skipping insertion in model container [2019-10-13 22:58:14,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:58:14" (3/3) ... [2019-10-13 22:58:14,396 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2019-10-13 22:58:14,407 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:58:14,423 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:58:14,432 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:58:14,454 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:58:14,454 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:58:14,454 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:58:14,454 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:58:14,455 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:58:14,455 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:58:14,455 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:58:14,455 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:58:14,471 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-13 22:58:14,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 22:58:14,476 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:58:14,477 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:58:14,479 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:58:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:58:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1779470644, now seen corresponding path program 1 times [2019-10-13 22:58:14,493 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:58:14,494 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449939179] [2019-10-13 22:58:14,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:14,494 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:14,494 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:58:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:14,715 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 22:58:14,716 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449939179] [2019-10-13 22:58:14,717 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:58:14,717 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:58:14,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718490662] [2019-10-13 22:58:14,722 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:58:14,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:58:14,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:58:14,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:58:14,735 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-10-13 22:58:14,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:58:14,778 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-13 22:58:14,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:58:14,781 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-10-13 22:58:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:58:14,791 INFO L225 Difference]: With dead ends: 27 [2019-10-13 22:58:14,791 INFO L226 Difference]: Without dead ends: 13 [2019-10-13 22:58:14,795 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:58:14,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-13 22:58:14,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-13 22:58:14,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-13 22:58:14,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-13 22:58:14,827 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-10-13 22:58:14,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:58:14,828 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-13 22:58:14,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:58:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-13 22:58:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-13 22:58:14,829 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:58:14,829 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:58:14,830 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:58:14,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:58:14,830 INFO L82 PathProgramCache]: Analyzing trace with hash -66809759, now seen corresponding path program 1 times [2019-10-13 22:58:14,831 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:58:14,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018660197] [2019-10-13 22:58:14,831 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:14,832 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:58:14,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:58:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:58:15,332 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 20 [2019-10-13 22:58:15,341 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 22:58:15,341 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018660197] [2019-10-13 22:58:15,342 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:58:15,342 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 22:58:15,342 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305709025] [2019-10-13 22:58:15,344 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 22:58:15,344 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:58:15,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 22:58:15,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 22:58:15,345 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2019-10-13 22:58:15,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:58:15,398 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-10-13 22:58:15,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 22:58:15,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-13 22:58:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:58:15,399 INFO L225 Difference]: With dead ends: 13 [2019-10-13 22:58:15,399 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 22:58:15,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 22:58:15,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 22:58:15,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 22:58:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 22:58:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 22:58:15,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-10-13 22:58:15,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:58:15,402 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 22:58:15,402 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 22:58:15,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 22:58:15,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 22:58:15,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 22:58:15,465 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 22:58:15,465 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:58:15,465 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 22:58:15,465 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 22:58:15,466 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 22:58:15,466 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 22:58:15,466 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 7 76) no Hoare annotation was computed. [2019-10-13 22:58:15,466 INFO L443 ceAbstractionStarter]: For program point L52(lines 52 74) no Hoare annotation was computed. [2019-10-13 22:58:15,467 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 7 76) no Hoare annotation was computed. [2019-10-13 22:58:15,467 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 7 76) the Hoare annotation is: true [2019-10-13 22:58:15,467 INFO L443 ceAbstractionStarter]: For program point L61(line 61) no Hoare annotation was computed. [2019-10-13 22:58:15,467 INFO L443 ceAbstractionStarter]: For program point L59(lines 59 68) no Hoare annotation was computed. [2019-10-13 22:58:15,467 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) no Hoare annotation was computed. [2019-10-13 22:58:15,468 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 75) no Hoare annotation was computed. [2019-10-13 22:58:15,468 INFO L439 ceAbstractionStarter]: At program point L45(lines 8 76) the Hoare annotation is: (or (and (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)) (<= main_~main__x~0 (let ((.cse0 (div main_~main__x~0 4294967296))) (+ (* 4294967296 .cse0) (* 3 (div (+ (* .cse0 (- 4294967296)) main_~main__x~0) 3)))))) [2019-10-13 22:58:15,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:58:15 BoogieIcfgContainer [2019-10-13 22:58:15,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 22:58:15,501 INFO L168 Benchmark]: Toolchain (without parser) took 1912.54 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 104.8 MB in the beginning and 107.3 MB in the end (delta: -2.5 MB). Peak memory consumption was 61.5 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:15,503 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 22:58:15,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.01 ms. Allocated memory is still 140.0 MB. Free memory was 104.8 MB in the beginning and 95.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:15,511 INFO L168 Benchmark]: Boogie Preprocessor took 113.03 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 95.1 MB in the beginning and 181.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:15,512 INFO L168 Benchmark]: RCFGBuilder took 399.43 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 165.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:15,514 INFO L168 Benchmark]: TraceAbstraction took 1115.17 ms. Allocated memory is still 203.9 MB. Free memory was 164.3 MB in the beginning and 107.3 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2019-10-13 22:58:15,524 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory is still 122.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.01 ms. Allocated memory is still 140.0 MB. Free memory was 104.8 MB in the beginning and 95.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.03 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 95.1 MB in the beginning and 181.8 MB in the end (delta: -86.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.43 ms. Allocated memory is still 203.9 MB. Free memory was 181.8 MB in the beginning and 165.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1115.17 ms. Allocated memory is still 203.9 MB. Free memory was 164.3 MB in the beginning and 107.3 MB in the end (delta: 57.0 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 61]: 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: 8]: Loop Invariant Derived loop invariant: (main__y / 4294967296 <= 0 && 1 <= main__y) || main__x <= 4294967296 * (main__x / 4294967296) + 3 * ((main__x / 4294967296 * -4294967296 + main__x) / 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 3 SDslu, 23 SDs, 0 SdLazy, 7 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 33 HoareAnnotationTreeSize, 5 FomulaSimplifications, 38 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1375 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 correct! Received shutdown request...