/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:02:00,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:02:00,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:02:00,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:02:00,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:02:00,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:02:00,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:02:00,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:02:00,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:02:00,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:02:00,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:02:00,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:02:00,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:02:00,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:02:00,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:02:00,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:02:00,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:02:00,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:02:00,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:02:00,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:02:00,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:02:00,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:02:00,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:02:00,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:02:00,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 04:02:00,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:02:00,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:02:00,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:02:00,957 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 [2019-11-07 04:02:00,977 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:02:00,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:02:00,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:02:00,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:02:00,982 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:02:00,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:02:00,982 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:02:00,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:02:00,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:02:00,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:02:00,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:02:00,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:02:00,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:02:00,984 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:02:00,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:02:00,985 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:02:00,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:02:00,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:02:00,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:02:00,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:02:00,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:02:00,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:02:00,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:02:00,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:02:00,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:02:00,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:02:00,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:02:00,987 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:02:00,988 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 04:02:01,295 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:02:01,311 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:02:01,314 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:02:01,316 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:02:01,316 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:02:01,317 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-11-07 04:02:01,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f36062e54/f7a3d726ca15471aa915ee0bf5728374/FLAGd2aea1ae2 [2019-11-07 04:02:01,812 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:02:01,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2019-11-07 04:02:01,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f36062e54/f7a3d726ca15471aa915ee0bf5728374/FLAGd2aea1ae2 [2019-11-07 04:02:02,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f36062e54/f7a3d726ca15471aa915ee0bf5728374 [2019-11-07 04:02:02,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:02:02,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:02:02,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:02:02,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:02:02,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:02:02,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:02:02" (1/1) ... [2019-11-07 04:02:02,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fdd707e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02, skipping insertion in model container [2019-11-07 04:02:02,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:02:02" (1/1) ... [2019-11-07 04:02:02,268 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:02:02,318 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:02:02,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:02:02,576 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:02:02,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:02:02,619 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:02:02,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02 WrapperNode [2019-11-07 04:02:02,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:02:02,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:02:02,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:02:02,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:02:02,631 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02" (1/1) ... [2019-11-07 04:02:02,631 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02" (1/1) ... [2019-11-07 04:02:02,637 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02" (1/1) ... [2019-11-07 04:02:02,637 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02" (1/1) ... [2019-11-07 04:02:02,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02" (1/1) ... [2019-11-07 04:02:02,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02" (1/1) ... [2019-11-07 04:02:02,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02" (1/1) ... [2019-11-07 04:02:02,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:02:02,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:02:02,726 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:02:02,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:02:02,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02" (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 04:02:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:02:02,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:02:02,782 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:02:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:02:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:02:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:02:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:02:02,782 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:02:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:02:02,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:02:02,971 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:02:02,971 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 04:02:02,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:02:02 BoogieIcfgContainer [2019-11-07 04:02:02,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:02:02,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 04:02:02,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 04:02:02,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 04:02:02,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:02:02" (1/3) ... [2019-11-07 04:02:02,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb8f271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:02:02, skipping insertion in model container [2019-11-07 04:02:02,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:02:02" (2/3) ... [2019-11-07 04:02:02,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fb8f271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:02:02, skipping insertion in model container [2019-11-07 04:02:02,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:02:02" (3/3) ... [2019-11-07 04:02:02,999 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2019-11-07 04:02:03,012 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 04:02:03,038 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 04:02:03,049 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 04:02:03,075 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 04:02:03,075 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 04:02:03,076 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 04:02:03,076 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 04:02:03,076 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 04:02:03,076 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 04:02:03,076 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 04:02:03,076 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 04:02:03,094 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-11-07 04:02:03,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-07 04:02:03,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:02:03,101 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:02:03,102 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:02:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:02:03,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2057132807, now seen corresponding path program 1 times [2019-11-07 04:02:03,123 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:02:03,123 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131243138] [2019-11-07 04:02:03,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:02:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:02:03,380 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 04:02:03,380 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131243138] [2019-11-07 04:02:03,381 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 04:02:03,381 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 04:02:03,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199347271] [2019-11-07 04:02:03,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 04:02:03,387 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:02:03,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 04:02:03,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 04:02:03,400 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2019-11-07 04:02:03,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:02:03,620 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2019-11-07 04:02:03,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 04:02:03,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-07 04:02:03,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:02:03,635 INFO L225 Difference]: With dead ends: 31 [2019-11-07 04:02:03,636 INFO L226 Difference]: Without dead ends: 13 [2019-11-07 04:02:03,641 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-07 04:02:03,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-07 04:02:03,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-07 04:02:03,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-07 04:02:03,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-07 04:02:03,678 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-11-07 04:02:03,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:02:03,678 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-07 04:02:03,678 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 04:02:03,679 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-07 04:02:03,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-07 04:02:03,680 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:02:03,680 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:02:03,680 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:02:03,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:02:03,681 INFO L82 PathProgramCache]: Analyzing trace with hash -655331726, now seen corresponding path program 1 times [2019-11-07 04:02:03,681 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:02:03,681 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544643949] [2019-11-07 04:02:03,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:02:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:02:03,854 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 04:02:03,854 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544643949] [2019-11-07 04:02:03,855 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937066761] [2019-11-07 04:02:03,856 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 04:02:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:02:03,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-07 04:02:03,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:02:03,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 04:02:04,023 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 04:02:04,024 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:02:04,107 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 04:02:04,108 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [846546028] [2019-11-07 04:02:04,139 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-07 04:02:04,140 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:02:04,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:02:04,182 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:02:04,182 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:02:04,266 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 10 for LOIs [2019-11-07 04:02:04,470 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-11-07 04:02:04,478 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:02:04,977 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:02:04,977 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 9] total 21 [2019-11-07 04:02:04,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748185068] [2019-11-07 04:02:04,980 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-07 04:02:04,980 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:02:04,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-07 04:02:04,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-11-07 04:02:04,982 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 21 states. [2019-11-07 04:02:06,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:02:06,128 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-11-07 04:02:06,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 04:02:06,128 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 12 [2019-11-07 04:02:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:02:06,129 INFO L225 Difference]: With dead ends: 23 [2019-11-07 04:02:06,129 INFO L226 Difference]: Without dead ends: 16 [2019-11-07 04:02:06,131 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=354, Invalid=978, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 04:02:06,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-07 04:02:06,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-11-07 04:02:06,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-11-07 04:02:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-11-07 04:02:06,137 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2019-11-07 04:02:06,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:02:06,137 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-11-07 04:02:06,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-07 04:02:06,137 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-11-07 04:02:06,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-07 04:02:06,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 04:02:06,138 INFO L410 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 04:02:06,348 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:02:06,349 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 04:02:06,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 04:02:06,351 INFO L82 PathProgramCache]: Analyzing trace with hash 8150471, now seen corresponding path program 2 times [2019-11-07 04:02:06,351 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 04:02:06,351 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356876529] [2019-11-07 04:02:06,352 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 04:02:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 04:02:06,505 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 04:02:06,506 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356876529] [2019-11-07 04:02:06,506 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310785930] [2019-11-07 04:02:06,506 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 04:02:06,541 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-07 04:02:06,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 04:02:06,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-07 04:02:06,544 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 04:02:06,666 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 04:02:06,666 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 04:02:06,768 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 04:02:06,769 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [359657747] [2019-11-07 04:02:06,770 INFO L159 IcfgInterpreter]: Started Sifa with 12 locations of interest [2019-11-07 04:02:06,770 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 04:02:06,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 04:02:06,771 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 04:02:06,771 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-07 04:02:06,792 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 10 for LOIs [2019-11-07 04:02:06,886 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 7 for LOIs [2019-11-07 04:02:06,888 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-07 04:02:07,484 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-07 04:02:07,485 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9, 9] total 28 [2019-11-07 04:02:07,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728198411] [2019-11-07 04:02:07,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-11-07 04:02:07,487 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 04:02:07,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-11-07 04:02:07,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2019-11-07 04:02:07,488 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 28 states. [2019-11-07 04:02:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 04:02:08,354 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-11-07 04:02:08,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-07 04:02:08,355 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 15 [2019-11-07 04:02:08,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 04:02:08,355 INFO L225 Difference]: With dead ends: 19 [2019-11-07 04:02:08,356 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 04:02:08,358 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=386, Invalid=1254, Unknown=0, NotChecked=0, Total=1640 [2019-11-07 04:02:08,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 04:02:08,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 04:02:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 04:02:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 04:02:08,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-11-07 04:02:08,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 04:02:08,360 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 04:02:08,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-11-07 04:02:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 04:02:08,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 04:02:08,561 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 04:02:08,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 04:02:08,743 INFO L439 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= |old(~__return_72~0)| ~__return_72~0)) [2019-11-07 04:02:08,744 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:02:08,744 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 04:02:08,744 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= 0 ~__return_72~0) (= ~__return_main~0 0) (<= ~__return_72~0 0)) [2019-11-07 04:02:08,744 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 04:02:08,744 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 04:02:08,745 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 8 65) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (= |old(~__return_72~0)| ~__return_72~0) (not (= |old(~__return_72~0)| 0))) [2019-11-07 04:02:08,745 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2019-11-07 04:02:08,745 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 8 65) no Hoare annotation was computed. [2019-11-07 04:02:08,745 INFO L443 ceAbstractionStarter]: For program point L20(lines 20 63) no Hoare annotation was computed. [2019-11-07 04:02:08,745 INFO L443 ceAbstractionStarter]: For program point L48(line 48) no Hoare annotation was computed. [2019-11-07 04:02:08,745 INFO L443 ceAbstractionStarter]: For program point L14(lines 14 64) no Hoare annotation was computed. [2019-11-07 04:02:08,745 INFO L443 ceAbstractionStarter]: For program point L46(lines 46 55) no Hoare annotation was computed. [2019-11-07 04:02:08,746 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 8 65) no Hoare annotation was computed. [2019-11-07 04:02:08,746 INFO L443 ceAbstractionStarter]: For program point L39(lines 39 61) no Hoare annotation was computed. [2019-11-07 04:02:08,746 INFO L439 ceAbstractionStarter]: At program point L35(lines 25 63) the Hoare annotation is: (or (not (= 0 ~__return_main~0)) (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (<= 0 main_~main__i~0) (<= main_~main__j~0 2147483647) (<= main_~main__i~0 2147483647) (<= .cse0 .cse1) (<= main_~main__x~0 2147483647) (<= .cse1 .cse0) (<= 0 main_~main__j~0) (= |old(~__return_72~0)| ~__return_72~0) (<= main_~main__y~0 2147483647))) (not (= |old(~__return_72~0)| 0))) [2019-11-07 04:02:08,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:02:08 BoogieIcfgContainer [2019-11-07 04:02:08,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 04:02:08,763 INFO L168 Benchmark]: Toolchain (without parser) took 6548.80 ms. Allocated memory was 138.9 MB in the beginning and 280.0 MB in the end (delta: 141.0 MB). Free memory was 104.0 MB in the beginning and 192.3 MB in the end (delta: -88.3 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:08,764 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 122.2 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-07 04:02:08,765 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.55 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 94.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:08,766 INFO L168 Benchmark]: Boogie Preprocessor took 104.22 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 94.3 MB in the beginning and 181.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:08,767 INFO L168 Benchmark]: RCFGBuilder took 247.82 ms. Allocated memory is still 201.9 MB. Free memory was 181.3 MB in the beginning and 168.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:08,768 INFO L168 Benchmark]: TraceAbstraction took 5786.01 ms. Allocated memory was 201.9 MB in the beginning and 280.0 MB in the end (delta: 78.1 MB). Free memory was 168.2 MB in the beginning and 192.3 MB in the end (delta: -24.2 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. [2019-11-07 04:02:08,772 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 122.2 MB in the beginning and 121.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 389.55 ms. Allocated memory is still 138.9 MB. Free memory was 103.8 MB in the beginning and 94.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.22 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 94.3 MB in the beginning and 181.3 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 247.82 ms. Allocated memory is still 201.9 MB. Free memory was 181.3 MB in the beginning and 168.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5786.01 ms. Allocated memory was 201.9 MB in the beginning and 280.0 MB in the end (delta: 78.1 MB). Free memory was 168.2 MB in the beginning and 192.3 MB in the end (delta: -24.2 MB). Peak memory consumption was 54.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: 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: 25]: Loop Invariant Derived loop invariant: (!(0 == __return_main) || ((((((((0 <= main__i && main__j <= 2147483647) && main__i <= 2147483647) && main__j + main__x <= main__i + main__y) && main__x <= 2147483647) && main__i + main__y <= main__j + main__x) && 0 <= main__j) && \old(__return_72) == __return_72) && main__y <= 2147483647)) || !(\old(__return_72) == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 5.6s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 29 SDtfs, 172 SDslu, 102 SDs, 0 SdLazy, 197 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 47 SyntacticMatches, 6 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 567 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 10 NumberOfFragments, 75 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 362 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 6270 SizeOfPredicates, 16 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 3/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 458, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 22, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 24, TOOLS_POST_TIME[ms]: 27, TOOLS_POST_CALL_APPLICATIONS: 8, TOOLS_POST_CALL_TIME[ms]: 7, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 2, TOOLS_QUANTIFIERELIM_APPLICATIONS: 36, TOOLS_QUANTIFIERELIM_TIME[ms]: 25, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 4, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 80, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 4, DOMAIN_JOIN_TIME[ms]: 39, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 199, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 17, DOMAIN_ISBOTTOM_APPLICATIONS: 22, DOMAIN_ISBOTTOM_TIME[ms]: 44, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 239, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 238, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 4, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 4, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 7, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 30, DAG_COMPRESSION_PROCESSED_NODES: 144, DAG_COMPRESSION_RETAINED_NODES: 80, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...