/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/loops/ludcmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:03:09,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:03:09,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:03:09,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:03:09,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:03:09,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:03:09,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:03:09,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:03:09,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:03:09,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:03:09,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:03:09,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:03:09,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:03:09,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:03:09,867 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:03:09,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:03:09,869 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:03:09,870 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:03:09,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:03:09,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:03:09,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:03:09,876 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:03:09,877 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:03:09,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:03:09,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:03:09,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:03:09,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:03:09,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:03:09,890 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 04:03:09,903 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:03:09,903 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:03:09,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:03:09,905 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:03:09,905 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:03:09,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:03:09,905 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:03:09,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:03:09,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:03:09,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:03:09,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:03:09,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:03:09,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:03:09,907 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:03:09,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:03:09,907 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:03:09,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:03:09,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:03:09,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:03:09,908 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:03:09,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:03:09,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:03:09,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:03:09,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:03:09,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:03:09,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:03:09,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:03:09,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:03:09,910 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 04:03:10,170 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:03:10,183 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:03:10,186 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:03:10,188 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:03:10,188 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:03:10,189 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/ludcmp.c [2019-11-07 04:03:10,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0afa4e01/d9e807e03fa848b990d37a854c8e9132/FLAGd27b8c563 [2019-11-07 04:03:10,673 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:03:10,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/ludcmp.c [2019-11-07 04:03:10,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0afa4e01/d9e807e03fa848b990d37a854c8e9132/FLAGd27b8c563 [2019-11-07 04:03:11,055 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0afa4e01/d9e807e03fa848b990d37a854c8e9132 [2019-11-07 04:03:11,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:03:11,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:03:11,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:03:11,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:03:11,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:03:11,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:03:11" (1/1) ... [2019-11-07 04:03:11,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8cd29d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11, skipping insertion in model container [2019-11-07 04:03:11,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:03:11" (1/1) ... [2019-11-07 04:03:11,083 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:03:11,106 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:03:11,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:03:11,366 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:03:11,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:03:11,531 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:03:11,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11 WrapperNode [2019-11-07 04:03:11,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:03:11,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:03:11,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:03:11,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:03:11,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11" (1/1) ... [2019-11-07 04:03:11,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11" (1/1) ... [2019-11-07 04:03:11,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11" (1/1) ... [2019-11-07 04:03:11,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11" (1/1) ... [2019-11-07 04:03:11,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11" (1/1) ... [2019-11-07 04:03:11,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11" (1/1) ... [2019-11-07 04:03:11,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11" (1/1) ... [2019-11-07 04:03:11,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:03:11,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:03:11,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:03:11,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:03:11,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11" (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 04:03:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:03:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:03:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:03:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2019-11-07 04:03:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:03:11,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2019-11-07 04:03:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:03:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:03:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2019-11-07 04:03:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2019-11-07 04:03:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:03:11,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-07 04:03:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-07 04:03:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 04:03:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:03:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:03:11,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:03:12,353 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:03:12,353 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-07 04:03:12,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:03:12 BoogieIcfgContainer [2019-11-07 04:03:12,354 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:03:12,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:03:12,356 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:03:12,359 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:03:12,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:03:11" (1/3) ... [2019-11-07 04:03:12,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35de9f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:03:12, skipping insertion in model container [2019-11-07 04:03:12,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:03:11" (2/3) ... [2019-11-07 04:03:12,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35de9f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:03:12, skipping insertion in model container [2019-11-07 04:03:12,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:03:12" (3/3) ... [2019-11-07 04:03:12,362 INFO L109 eAbstractionObserver]: Analyzing ICFG ludcmp.c [2019-11-07 04:03:12,373 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:03:12,381 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:03:12,393 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:03:12,420 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:03:12,420 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:03:12,420 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:03:12,421 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:03:12,421 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:03:12,421 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:03:12,422 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:03:12,422 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:03:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-07 04:03:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 04:03:12,442 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:12,443 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:12,445 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:12,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:12,449 INFO L82 PathProgramCache]: Analyzing trace with hash 133090448, now seen corresponding path program 1 times [2019-11-07 04:03:12,458 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:12,458 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624106895] [2019-11-07 04:03:12,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:12,689 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 04:03:12,690 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624106895] [2019-11-07 04:03:12,692 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:03:12,693 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 04:03:12,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918390448] [2019-11-07 04:03:12,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 04:03:12,702 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:03:12,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 04:03:12,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:03:12,721 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2019-11-07 04:03:12,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:03:12,810 INFO L93 Difference]: Finished difference Result 74 states and 104 transitions. [2019-11-07 04:03:12,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 04:03:12,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-07 04:03:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:03:12,824 INFO L225 Difference]: With dead ends: 74 [2019-11-07 04:03:12,825 INFO L226 Difference]: Without dead ends: 16 [2019-11-07 04:03:12,829 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-07 04:03:12,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-07 04:03:12,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-07 04:03:12,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-07 04:03:12,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2019-11-07 04:03:12,874 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2019-11-07 04:03:12,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:03:12,875 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2019-11-07 04:03:12,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 04:03:12,876 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2019-11-07 04:03:12,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 04:03:12,877 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:12,877 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:12,877 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:12,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:12,878 INFO L82 PathProgramCache]: Analyzing trace with hash -455874738, now seen corresponding path program 1 times [2019-11-07 04:03:12,878 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:12,878 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568215952] [2019-11-07 04:03:12,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:12,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:13,006 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568215952] [2019-11-07 04:03:13,008 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632982472] [2019-11-07 04:03:13,008 INFO L94 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 [2019-11-07 04:03:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:13,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 04:03:13,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:03:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:13,158 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:03:13,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:13,198 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1351156145] [2019-11-07 04:03:13,246 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-07 04:03:13,246 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:03:13,253 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:03:13,260 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:03:13,261 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:03:13,685 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 71 for LOIs [2019-11-07 04:03:13,876 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-11-07 04:03:13,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 34 for LOIs [2019-11-07 04:03:13,885 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:03:14,230 WARN L191 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-11-07 04:03:14,475 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-11-07 04:03:14,708 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-11-07 04:03:14,777 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:03:14,778 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 10] total 19 [2019-11-07 04:03:14,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000545199] [2019-11-07 04:03:14,780 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 04:03:14,781 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:03:14,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 04:03:14,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2019-11-07 04:03:14,782 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 19 states. [2019-11-07 04:03:15,084 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-11-07 04:03:15,402 WARN L191 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2019-11-07 04:03:15,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:03:15,705 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2019-11-07 04:03:15,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 04:03:15,707 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 12 [2019-11-07 04:03:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:03:15,707 INFO L225 Difference]: With dead ends: 32 [2019-11-07 04:03:15,708 INFO L226 Difference]: Without dead ends: 21 [2019-11-07 04:03:15,710 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2019-11-07 04:03:15,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-07 04:03:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-07 04:03:15,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-07 04:03:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-11-07 04:03:15,722 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 12 [2019-11-07 04:03:15,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:03:15,722 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-11-07 04:03:15,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 04:03:15,722 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-11-07 04:03:15,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 04:03:15,724 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:15,724 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:15,927 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:03:15,928 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:15,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1514238960, now seen corresponding path program 2 times [2019-11-07 04:03:15,930 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:15,930 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285455692] [2019-11-07 04:03:15,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:03:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:16,059 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285455692] [2019-11-07 04:03:16,059 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361035240] [2019-11-07 04:03:16,059 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:03:16,119 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-07 04:03:16,119 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 04:03:16,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-07 04:03:16,122 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:03:16,180 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:16,182 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:03:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 04:03:16,230 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [156892894] [2019-11-07 04:03:16,231 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-07 04:03:16,232 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:03:16,232 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:03:16,232 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:03:16,233 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:03:16,407 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 71 for LOIs [2019-11-07 04:03:16,582 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-11-07 04:03:16,589 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 34 for LOIs [2019-11-07 04:03:16,596 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:03:16,950 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2019-11-07 04:03:17,130 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-11-07 04:03:17,376 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 67 [2019-11-07 04:03:17,442 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:03:17,442 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 10] total 24 [2019-11-07 04:03:17,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378494717] [2019-11-07 04:03:17,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-11-07 04:03:17,444 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:03:17,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-11-07 04:03:17,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2019-11-07 04:03:17,445 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 24 states. [2019-11-07 04:03:17,613 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2019-11-07 04:03:17,761 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2019-11-07 04:03:18,028 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2019-11-07 04:03:18,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:03:18,352 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2019-11-07 04:03:18,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 04:03:18,353 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 15 [2019-11-07 04:03:18,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:03:18,355 INFO L225 Difference]: With dead ends: 37 [2019-11-07 04:03:18,355 INFO L226 Difference]: Without dead ends: 23 [2019-11-07 04:03:18,356 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=186, Invalid=806, Unknown=0, NotChecked=0, Total=992 [2019-11-07 04:03:18,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-07 04:03:18,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-11-07 04:03:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-07 04:03:18,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-11-07 04:03:18,363 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2019-11-07 04:03:18,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:03:18,363 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-11-07 04:03:18,363 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-11-07 04:03:18,363 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-11-07 04:03:18,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-07 04:03:18,364 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:03:18,364 INFO L410 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:03:18,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:03:18,569 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:03:18,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:03:18,569 INFO L82 PathProgramCache]: Analyzing trace with hash 225444816, now seen corresponding path program 3 times [2019-11-07 04:03:18,570 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:03:18,570 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274739669] [2019-11-07 04:03:18,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:03:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-07 04:03:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-07 04:03:18,710 INFO L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-07 04:03:18,710 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-07 04:03:18,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:03:18 BoogieIcfgContainer [2019-11-07 04:03:18,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:03:18,794 INFO L168 Benchmark]: Toolchain (without parser) took 7722.70 ms. Allocated memory was 137.9 MB in the beginning and 289.9 MB in the end (delta: 152.0 MB). Free memory was 102.8 MB in the beginning and 130.8 MB in the end (delta: -28.0 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:18,796 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:03:18,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.12 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 178.2 MB in the end (delta: -75.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:18,798 INFO L168 Benchmark]: Boogie Preprocessor took 57.09 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 175.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:18,798 INFO L168 Benchmark]: RCFGBuilder took 764.67 ms. Allocated memory is still 201.3 MB. Free memory was 175.5 MB in the beginning and 131.1 MB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:18,802 INFO L168 Benchmark]: TraceAbstraction took 6432.13 ms. Allocated memory was 201.3 MB in the beginning and 289.9 MB in the end (delta: 88.6 MB). Free memory was 131.1 MB in the beginning and 130.8 MB in the end (delta: 349.5 kB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. [2019-11-07 04:03:18,810 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 464.12 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 178.2 MB in the end (delta: -75.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.09 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 175.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 764.67 ms. Allocated memory is still 201.3 MB. Free memory was 175.5 MB in the beginning and 131.1 MB in the end (delta: 44.3 MB). Peak memory consumption was 44.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6432.13 ms. Allocated memory was 201.3 MB in the beginning and 289.9 MB in the end (delta: 88.6 MB). Free memory was 131.1 MB in the beginning and 130.8 MB in the end (delta: 349.5 kB). Peak memory consumption was 89.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_real at line 96, overapproximation of someBinaryArithmeticDOUBLEoperation at line 97. Possible FailurePath: [L69] double a[50][50], b[50], x[50]; [L86] int i, j, nmax = 50, n = 5, chkerr; [L87] double eps, w; [L89] eps = 1.0e-6 [L91] i = 0 VAL [a={-1:0}, b={2:0}, eps=1/1000000, i=0, n=5, nmax=50, x={1:0}] [L91] COND TRUE i <= n [L93] w = 0.0 [L94] j = 0 VAL [a={-1:0}, b={2:0}, eps=1/1000000, i=0, j=0, n=5, nmax=50, w=0, x={1:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND TRUE i == j [L97] EXPR a[i][j] [L97] a[i][j] *= 10.0 [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={-1:0}, a[i][j]=20014, b={2:0}, eps=1/1000000, i=0, j=1, n=5, nmax=50, x={1:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={-1:0}, a[i][j]=20014, b={2:0}, eps=1/1000000, i=0, j=2, n=5, nmax=50, x={1:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={-1:0}, a[i][j]=20014, b={2:0}, eps=1/1000000, i=0, j=3, n=5, nmax=50, x={1:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={-1:0}, a[i][j]=20014, b={2:0}, eps=1/1000000, i=0, j=4, n=5, nmax=50, x={1:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={-1:0}, a[i][j]=20014, b={2:0}, eps=1/1000000, i=0, j=5, n=5, nmax=50, x={1:0}] [L94] COND TRUE j <= n [L96] a[i][j] = (i + 1) + (j + 1) [L97] COND FALSE !(i == j) [L98] EXPR a[i][j] [L98] w += a[i][j] [L94] j++ VAL [a={-1:0}, a[i][j]=20014, b={2:0}, eps=1/1000000, i=0, j=6, n=5, nmax=50, x={1:0}] [L94] COND FALSE !(j <= n) VAL [a={-1:0}, a[i][j]=20014, b={2:0}, eps=1/1000000, i=0, j=6, n=5, nmax=50, x={1:0}] [L100] CALL __VERIFIER_assert(i==2) VAL [\old(cond)=0, a={-1:0}, b={2:0}, x={1:0}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, a={-1:0}, b={2:0}, cond=0, x={1:0}] [L5] __VERIFIER_error() VAL [\old(cond)=0, a={-1:0}, b={2:0}, cond=0, x={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 39 locations, 1 error locations. Result: UNSAFE, OverallTime: 6.3s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 65 SDslu, 110 SDs, 0 SdLazy, 237 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 113 GetRequests, 51 SyntacticMatches, 4 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2547 SizeOfPredicates, 4 NumberOfNonLiveVariables, 214 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 1005, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 22, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 22, TOOLS_POST_TIME[ms]: 477, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME[ms]: 40, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 10, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME[ms]: 507, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 254, FLUID_QUERY_TIME[ms]: 9, FLUID_QUERIES: 82, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME[ms]: 149, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 143, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 38, DOMAIN_ISBOTTOM_APPLICATIONS: 22, DOMAIN_ISBOTTOM_TIME[ms]: 48, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 319, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 318, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 339, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 339, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 5, DAG_COMPRESSION_TIME[ms]: 23, DAG_COMPRESSION_PROCESSED_NODES: 126, DAG_COMPRESSION_RETAINED_NODES: 90, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...