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-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:42:12,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:42:12,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:42:13,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:42:13,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:42:13,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:42:13,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:42:13,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:42:13,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:42:13,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:42:13,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:42:13,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:42:13,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:42:13,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:42:13,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:42:13,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:42:13,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:42:13,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:42:13,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:42:13,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:42:13,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:42:13,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:42:13,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:42:13,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:42:13,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:42:13,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:42:13,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:42:13,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:42:13,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:42:13,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:42:13,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:42:13,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:42:13,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:42:13,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:42:13,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:42:13,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:42:13,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:42:13,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:42:13,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:42:13,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:42:13,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:42:13,046 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 13:42:13,061 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:42:13,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:42:13,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:42:13,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:42:13,063 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:42:13,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:42:13,064 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:42:13,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:42:13,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:42:13,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:42:13,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:42:13,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:42:13,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:42:13,065 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:42:13,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:42:13,065 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:42:13,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:42:13,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:42:13,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:42:13,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:42:13,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:42:13,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:42:13,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:42:13,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:42:13,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:42:13,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:42:13,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:42:13,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:42:13,068 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 13:42:13,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:42:13,372 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:42:13,376 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:42:13,377 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:42:13,378 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:42:13,379 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2019-10-07 13:42:13,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a11f46b/9d63b1a092aa4541a0c9d4b9b935d48a/FLAG915a30ea8 [2019-10-07 13:42:14,002 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:42:14,003 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i [2019-10-07 13:42:14,010 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a11f46b/9d63b1a092aa4541a0c9d4b9b935d48a/FLAG915a30ea8 [2019-10-07 13:42:14,413 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8a11f46b/9d63b1a092aa4541a0c9d4b9b935d48a [2019-10-07 13:42:14,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:42:14,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:42:14,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:42:14,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:42:14,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:42:14,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:42:14" (1/1) ... [2019-10-07 13:42:14,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e9bc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14, skipping insertion in model container [2019-10-07 13:42:14,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:42:14" (1/1) ... [2019-10-07 13:42:14,443 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:42:14,463 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:42:14,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:42:14,654 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:42:14,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:42:14,684 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:42:14,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14 WrapperNode [2019-10-07 13:42:14,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:42:14,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:42:14,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:42:14,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:42:14,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14" (1/1) ... [2019-10-07 13:42:14,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14" (1/1) ... [2019-10-07 13:42:14,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14" (1/1) ... [2019-10-07 13:42:14,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14" (1/1) ... [2019-10-07 13:42:14,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14" (1/1) ... [2019-10-07 13:42:14,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14" (1/1) ... [2019-10-07 13:42:14,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14" (1/1) ... [2019-10-07 13:42:14,797 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:42:14,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:42:14,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:42:14,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:42:14,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14" (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 13:42:14,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:42:14,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:42:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-07 13:42:14,851 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:42:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:42:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 13:42:14,851 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-07 13:42:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 13:42:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:42:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:42:14,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:42:15,254 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:42:15,255 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-07 13:42:15,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:42:15 BoogieIcfgContainer [2019-10-07 13:42:15,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:42:15,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:42:15,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:42:15,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:42:15,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:42:14" (1/3) ... [2019-10-07 13:42:15,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2aa7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:42:15, skipping insertion in model container [2019-10-07 13:42:15,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:42:14" (2/3) ... [2019-10-07 13:42:15,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c2aa7a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:42:15, skipping insertion in model container [2019-10-07 13:42:15,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:42:15" (3/3) ... [2019-10-07 13:42:15,272 INFO L109 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2019-10-07 13:42:15,282 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:42:15,289 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:42:15,300 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:42:15,325 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:42:15,325 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:42:15,326 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:42:15,326 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:42:15,326 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:42:15,326 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:42:15,326 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:42:15,327 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:42:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-07 13:42:15,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-07 13:42:15,348 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:42:15,349 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:42:15,351 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:42:15,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:42:15,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1706723647, now seen corresponding path program 1 times [2019-10-07 13:42:15,365 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:42:15,365 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:15,366 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:15,366 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:15,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:42:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:42:15,462 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 13:42:15,463 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:15,463 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:42:15,464 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 13:42:15,468 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 13:42:15,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 13:42:15,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:42:15,482 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2019-10-07 13:42:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:42:15,503 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-07 13:42:15,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 13:42:15,504 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-07 13:42:15,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:42:15,513 INFO L225 Difference]: With dead ends: 29 [2019-10-07 13:42:15,513 INFO L226 Difference]: Without dead ends: 12 [2019-10-07 13:42:15,517 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 13:42:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-07 13:42:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-07 13:42:15,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-07 13:42:15,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-07 13:42:15,558 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-07 13:42:15,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:42:15,559 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-07 13:42:15,559 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 13:42:15,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-07 13:42:15,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-07 13:42:15,562 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:42:15,562 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:42:15,562 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:42:15,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:42:15,564 INFO L82 PathProgramCache]: Analyzing trace with hash 2024305743, now seen corresponding path program 1 times [2019-10-07 13:42:15,564 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:42:15,566 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:42:15,566 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:15,566 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:42:15,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:42:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:42:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-07 13:42:15,645 INFO L161 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-07 13:42:15,645 INFO L451 BasicCegarLoop]: Counterexample might be feasible [2019-10-07 13:42:15,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 01:42:15 BoogieIcfgContainer [2019-10-07 13:42:15,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-07 13:42:15,669 INFO L168 Benchmark]: Toolchain (without parser) took 1242.88 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 139.2 MB in the end (delta: -36.2 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:42:15,670 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 13:42:15,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.14 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:42:15,672 INFO L168 Benchmark]: Boogie Preprocessor took 112.66 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 93.2 MB in the beginning and 180.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-07 13:42:15,673 INFO L168 Benchmark]: RCFGBuilder took 456.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 160.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:42:15,674 INFO L168 Benchmark]: TraceAbstraction took 408.63 ms. Allocated memory is still 201.9 MB. Free memory was 160.9 MB in the beginning and 139.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:42:15,678 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.14 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.66 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 93.2 MB in the beginning and 180.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 456.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.3 MB in the beginning and 160.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 408.63 ms. Allocated memory is still 201.9 MB. Free memory was 160.9 MB in the beginning and 139.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L11] int x,y,z,w; [L12] EXPR w = 0 [L12] EXPR z = w = 0 [L12] EXPR y = z = w = 0 [L12] x = y = z = w = 0 VAL [w=0, x=0, y=0, z=0] [L13] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L28] CALL __VERIFIER_assert(x >= 4 && y <= 2) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...