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/loops/n.c11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:44:57,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:44:57,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:44:57,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:44:57,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:44:57,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:44:57,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:44:57,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:44:57,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:44:57,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:44:57,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:44:57,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:44:57,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:44:57,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:44:57,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:44:57,922 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:44:57,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:44:57,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:44:57,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:44:57,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:44:57,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:44:57,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:44:57,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:44:57,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:44:57,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:44:57,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:44:57,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:44:57,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:44:57,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:44:57,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:44:57,949 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:44:57,950 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:44:57,951 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:44:57,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:44:57,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:44:57,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:44:57,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:44:57,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:44:57,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:44:57,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:44:57,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:44:57,957 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 [2019-10-07 13:44:57,987 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:44:57,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:44:57,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:44:57,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:44:57,993 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:44:57,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:44:57,994 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:44:57,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:44:57,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:44:57,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:44:57,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:44:57,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:44:57,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:44:57,997 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:44:57,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:44:57,997 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:44:57,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:44:57,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:44:57,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:44:57,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:44:57,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:44:57,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:44:57,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:44:57,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:44:57,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:44:57,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:44:57,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:44:57,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:44:58,000 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 [2019-10-07 13:44:58,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:44:58,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:44:58,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:44:58,320 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:44:58,320 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:44:58,321 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/n.c11.c [2019-10-07 13:44:58,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb9c7ac9/e7bd84a4ae644c4387ef7fb3173912d2/FLAG58c2de02e [2019-10-07 13:44:58,785 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:44:58,786 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/n.c11.c [2019-10-07 13:44:58,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb9c7ac9/e7bd84a4ae644c4387ef7fb3173912d2/FLAG58c2de02e [2019-10-07 13:44:59,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7eb9c7ac9/e7bd84a4ae644c4387ef7fb3173912d2 [2019-10-07 13:44:59,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:44:59,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:44:59,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:44:59,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:44:59,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:44:59,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:44:59" (1/1) ... [2019-10-07 13:44:59,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a425a91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59, skipping insertion in model container [2019-10-07 13:44:59,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:44:59" (1/1) ... [2019-10-07 13:44:59,237 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:44:59,255 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:44:59,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:44:59,435 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:44:59,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:44:59,462 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:44:59,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59 WrapperNode [2019-10-07 13:44:59,463 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:44:59,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:44:59,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:44:59,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:44:59,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59" (1/1) ... [2019-10-07 13:44:59,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59" (1/1) ... [2019-10-07 13:44:59,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59" (1/1) ... [2019-10-07 13:44:59,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59" (1/1) ... [2019-10-07 13:44:59,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59" (1/1) ... [2019-10-07 13:44:59,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59" (1/1) ... [2019-10-07 13:44:59,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59" (1/1) ... [2019-10-07 13:44:59,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:44:59,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:44:59,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:44:59,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:44:59,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59" (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 [2019-10-07 13:44:59,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:44:59,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:44:59,645 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:44:59,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:44:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:44:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:44:59,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-07 13:44:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:44:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:44:59,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:44:59,898 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:44:59,899 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:44:59,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:44:59 BoogieIcfgContainer [2019-10-07 13:44:59,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:44:59,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:44:59,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:44:59,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:44:59,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:44:59" (1/3) ... [2019-10-07 13:44:59,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d67b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:44:59, skipping insertion in model container [2019-10-07 13:44:59,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:44:59" (2/3) ... [2019-10-07 13:44:59,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72d67b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:44:59, skipping insertion in model container [2019-10-07 13:44:59,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:44:59" (3/3) ... [2019-10-07 13:44:59,923 INFO L109 eAbstractionObserver]: Analyzing ICFG n.c11.c [2019-10-07 13:44:59,946 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:44:59,955 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:44:59,966 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:44:59,992 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:44:59,992 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:44:59,993 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:44:59,993 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:44:59,993 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:44:59,993 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:44:59,993 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:44:59,993 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:45:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-07 13:45:00,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:45:00,012 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:45:00,012 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:45:00,014 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:45:00,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:45:00,019 INFO L82 PathProgramCache]: Analyzing trace with hash -126641576, now seen corresponding path program 1 times [2019-10-07 13:45:00,026 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:45:00,027 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:00,027 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:00,027 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:00,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:45:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:45:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:45:00,301 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:00,302 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:45:00,303 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-07 13:45:00,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-07 13:45:00,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-07 13:45:00,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-07 13:45:00,325 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2019-10-07 13:45:00,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:45:00,409 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2019-10-07 13:45:00,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:45:00,412 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-07 13:45:00,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:45:00,423 INFO L225 Difference]: With dead ends: 33 [2019-10-07 13:45:00,424 INFO L226 Difference]: Without dead ends: 12 [2019-10-07 13:45:00,429 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-07 13:45:00,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-07 13:45:00,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-07 13:45:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-07 13:45:00,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-07 13:45:00,475 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-07 13:45:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:45:00,476 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-07 13:45:00,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-07 13:45:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-07 13:45:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:45:00,477 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:45:00,477 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:45:00,477 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:45:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:45:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash 458180408, now seen corresponding path program 1 times [2019-10-07 13:45:00,478 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:45:00,478 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:00,479 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:00,479 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:45:00,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:45:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:45:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:45:00,625 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:45:00,626 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:45:00,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:45:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:45:00,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 13:45:00,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:45:00,689 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:45:00,721 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:45:00,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:45:00,753 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:45:00,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 13:45:00,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:45:00,820 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 13:45:00,820 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 11 [2019-10-07 13:45:00,821 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:45:00,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:45:00,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-10-07 13:45:00,823 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2019-10-07 13:45:00,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:45:00,856 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-10-07 13:45:00,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 13:45:00,856 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-07 13:45:00,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:45:00,857 INFO L225 Difference]: With dead ends: 12 [2019-10-07 13:45:00,857 INFO L226 Difference]: Without dead ends: 0 [2019-10-07 13:45:00,858 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:45:00,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-07 13:45:00,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-07 13:45:00,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-07 13:45:00,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-07 13:45:00,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-10-07 13:45:00,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:45:00,860 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-07 13:45:00,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:45:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-07 13:45:00,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-07 13:45:01,064 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:45:01,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-07 13:45:01,128 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-07 13:45:01,129 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:45:01,129 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-07 13:45:01,129 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-07 13:45:01,129 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-07 13:45:01,129 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-07 13:45:01,130 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 12 32) the Hoare annotation is: true [2019-10-07 13:45:01,130 INFO L443 ceAbstractionStarter]: For program point L28(line 28) no Hoare annotation was computed. [2019-10-07 13:45:01,130 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 12 32) no Hoare annotation was computed. [2019-10-07 13:45:01,132 INFO L439 ceAbstractionStarter]: At program point L19-2(lines 19 27) the Hoare annotation is: (< (mod main_~len~0 4294967296) 5) [2019-10-07 13:45:01,132 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 27) the Hoare annotation is: (< (mod main_~len~0 4294967296) 5) [2019-10-07 13:45:01,132 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-07 13:45:01,133 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-07 13:45:01,133 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-07 13:45:01,133 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-07 13:45:01,133 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-07 13:45:01,133 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-07 13:45:01,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:45:01 BoogieIcfgContainer [2019-10-07 13:45:01,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:45:01,152 INFO L168 Benchmark]: Toolchain (without parser) took 1929.51 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.6 MB in the beginning and 109.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2019-10-07 13:45:01,154 INFO L168 Benchmark]: CDTParser took 1.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:45:01,164 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.64 ms. Allocated memory is still 146.3 MB. Free memory was 102.4 MB in the beginning and 93.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:45:01,167 INFO L168 Benchmark]: Boogie Preprocessor took 126.26 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.0 MB in the beginning and 182.2 MB in the end (delta: -89.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-07 13:45:01,169 INFO L168 Benchmark]: RCFGBuilder took 319.63 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 168.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-10-07 13:45:01,171 INFO L168 Benchmark]: TraceAbstraction took 1238.49 ms. Allocated memory is still 203.9 MB. Free memory was 168.7 MB in the beginning and 109.0 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:45:01,180 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20 ms. Allocated memory is still 146.3 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.64 ms. Allocated memory is still 146.3 MB. Free memory was 102.4 MB in the beginning and 93.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.26 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 93.0 MB in the beginning and 182.2 MB in the end (delta: -89.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 319.63 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 168.7 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1238.49 ms. Allocated memory is still 203.9 MB. Free memory was 168.7 MB in the beginning and 109.0 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: len % 4294967296 < 5 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Result: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 9 SDslu, 57 SDs, 0 SdLazy, 20 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 15 HoareAnnotationTreeSize, 8 FomulaSimplifications, 17 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 1415 SizeOfPredicates, 2 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 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...