/usr/bin/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-fb55353 [2019-11-07 04:00:28,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:00:28,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:00:28,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:00:28,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:00:28,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:00:28,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:00:28,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:00:28,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:00:28,754 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:00:28,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:00:28,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:00:28,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:00:28,758 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:00:28,758 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:00:28,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:00:28,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:00:28,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:00:28,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:00:28,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:00:28,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:00:28,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:00:28,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:00:28,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:00:28,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:00:28,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:00:28,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:00:28,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:00:28,803 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 [2019-11-07 04:00:28,827 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:00:28,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:00:28,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:00:28,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:00:28,829 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:00:28,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:00:28,830 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:00:28,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:00:28,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:00:28,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:00:28,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:00:28,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:00:28,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:00:28,831 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:00:28,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:00:28,832 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:00:28,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:00:28,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:00:28,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:00:28,832 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:00:28,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:00:28,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:00:28,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:00:28,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:00:28,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:00:28,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:00:28,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:00:28,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:00:28,834 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 [2019-11-07 04:00:29,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:00:29,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:00:29,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:00:29,181 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:00:29,182 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:00:29,182 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-11-07 04:00:29,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb99ceb3/517c8e37d8d543f1a3e0bf8e07c60e5c/FLAGae350a916 [2019-11-07 04:00:29,749 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:00:29,750 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2019-11-07 04:00:29,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb99ceb3/517c8e37d8d543f1a3e0bf8e07c60e5c/FLAGae350a916 [2019-11-07 04:00:30,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb99ceb3/517c8e37d8d543f1a3e0bf8e07c60e5c [2019-11-07 04:00:30,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:00:30,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:00:30,120 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:00:30,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:00:30,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:00:30,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:00:30" (1/1) ... [2019-11-07 04:00:30,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77564d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30, skipping insertion in model container [2019-11-07 04:00:30,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:00:30" (1/1) ... [2019-11-07 04:00:30,136 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:00:30,159 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:00:30,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:00:30,347 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:00:30,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:00:30,393 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:00:30,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30 WrapperNode [2019-11-07 04:00:30,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:00:30,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:00:30,395 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:00:30,395 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:00:30,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30" (1/1) ... [2019-11-07 04:00:30,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30" (1/1) ... [2019-11-07 04:00:30,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30" (1/1) ... [2019-11-07 04:00:30,502 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30" (1/1) ... [2019-11-07 04:00:30,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30" (1/1) ... [2019-11-07 04:00:30,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30" (1/1) ... [2019-11-07 04:00:30,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30" (1/1) ... [2019-11-07 04:00:30,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:00:30,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:00:30,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:00:30,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:00:30,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30" (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 [2019-11-07 04:00:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:00:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:00:30,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:00:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:00:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:00:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:00:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:00:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:00:30,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:00:30,914 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:00:30,914 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 04:00:30,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:00:30 BoogieIcfgContainer [2019-11-07 04:00:30,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:00:30,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:00:30,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:00:30,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:00:30,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:00:30" (1/3) ... [2019-11-07 04:00:30,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b85677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:00:30, skipping insertion in model container [2019-11-07 04:00:30,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:00:30" (2/3) ... [2019-11-07 04:00:30,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b85677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:00:30, skipping insertion in model container [2019-11-07 04:00:30,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:00:30" (3/3) ... [2019-11-07 04:00:30,928 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2019-11-07 04:00:30,944 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:00:30,953 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:00:30,965 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:00:30,993 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:00:30,994 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:00:30,994 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:00:30,994 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:00:30,994 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:00:30,994 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:00:30,994 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:00:30,995 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:00:31,009 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-07 04:00:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 04:00:31,015 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:31,016 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:00:31,021 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:31,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:31,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1779470644, now seen corresponding path program 1 times [2019-11-07 04:00:31,035 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:31,036 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501629432] [2019-11-07 04:00:31,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:00:31,253 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501629432] [2019-11-07 04:00:31,254 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:00:31,254 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 04:00:31,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536649123] [2019-11-07 04:00:31,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 04:00:31,261 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:31,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 04:00:31,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 04:00:31,279 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-07 04:00:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:31,317 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-11-07 04:00:31,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 04:00:31,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-07 04:00:31,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:31,331 INFO L225 Difference]: With dead ends: 27 [2019-11-07 04:00:31,331 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 04:00:31,335 INFO L630 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 [2019-11-07 04:00:31,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 04:00:31,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-07 04:00:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-07 04:00:31,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-07 04:00:31,380 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2019-11-07 04:00:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:31,381 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-07 04:00:31,381 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 04:00:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-07 04:00:31,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 04:00:31,382 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:00:31,382 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:00:31,383 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:00:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:00:31,383 INFO L82 PathProgramCache]: Analyzing trace with hash -66809759, now seen corresponding path program 1 times [2019-11-07 04:00:31,384 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:00:31,384 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812604106] [2019-11-07 04:00:31,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:00:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:00:31,800 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 20 [2019-11-07 04:00:31,809 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:00:31,809 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812604106] [2019-11-07 04:00:31,810 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:00:31,810 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:00:31,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29513913] [2019-11-07 04:00:31,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:00:31,812 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:00:31,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:00:31,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:00:31,813 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 4 states. [2019-11-07 04:00:31,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:00:31,852 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-07 04:00:31,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:00:31,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-07 04:00:31,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:00:31,853 INFO L225 Difference]: With dead ends: 13 [2019-11-07 04:00:31,854 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:00:31,855 INFO L630 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 [2019-11-07 04:00:31,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:00:31,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:00:31,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:00:31,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:00:31,856 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-11-07 04:00:31,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:00:31,856 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:00:31,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:00:31,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:00:31,857 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:00:31,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:00:31,894 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:00:31,894 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:00:31,894 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:00:31,894 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 04:00:31,895 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:00:31,895 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:00:31,895 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 7 76) no Hoare annotation was computed. [2019-11-07 04:00:31,895 INFO L443 ceAbstractionStarter]: For program point L52(lines 52 74) no Hoare annotation was computed. [2019-11-07 04:00:31,895 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 7 76) no Hoare annotation was computed. [2019-11-07 04:00:31,895 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 7 76) the Hoare annotation is: true [2019-11-07 04:00:31,896 INFO L443 ceAbstractionStarter]: For program point L61(line 61) no Hoare annotation was computed. [2019-11-07 04:00:31,896 INFO L443 ceAbstractionStarter]: For program point L59(lines 59 68) no Hoare annotation was computed. [2019-11-07 04:00:31,896 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) no Hoare annotation was computed. [2019-11-07 04:00:31,896 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 75) no Hoare annotation was computed. [2019-11-07 04:00:31,897 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)))))) [2019-11-07 04:00:31,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:00:31 BoogieIcfgContainer [2019-11-07 04:00:31,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:00:31,915 INFO L168 Benchmark]: Toolchain (without parser) took 1795.17 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 106.6 MB in the beginning and 108.1 MB in the end (delta: -1.5 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:31,916 INFO L168 Benchmark]: CDTParser took 1.27 ms. Allocated memory is still 148.4 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-07 04:00:31,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.48 ms. Allocated memory is still 148.4 MB. Free memory was 106.4 MB in the beginning and 96.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:31,918 INFO L168 Benchmark]: Boogie Preprocessor took 121.56 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 96.7 MB in the beginning and 182.9 MB in the end (delta: -86.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:31,919 INFO L168 Benchmark]: RCFGBuilder took 399.36 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 165.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:31,920 INFO L168 Benchmark]: TraceAbstraction took 995.37 ms. Allocated memory is still 204.5 MB. Free memory was 165.0 MB in the beginning and 108.1 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 MB. Max. memory is 7.1 GB. [2019-11-07 04:00:31,924 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27 ms. Allocated memory is still 148.4 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.48 ms. Allocated memory is still 148.4 MB. Free memory was 106.4 MB in the beginning and 96.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.56 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 96.7 MB in the beginning and 182.9 MB in the end (delta: -86.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.36 ms. Allocated memory is still 204.5 MB. Free memory was 182.9 MB in the beginning and 165.6 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 995.37 ms. Allocated memory is still 204.5 MB. Free memory was 165.0 MB in the beginning and 108.1 MB in the end (delta: 56.9 MB). Peak memory consumption was 56.9 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: 0.9s, 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, 0.1s 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, 0.3s 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...