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/gj2007b.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:02:48,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:02:48,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:02:48,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:02:48,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:02:48,676 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:02:48,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:02:48,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:02:48,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:02:48,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:02:48,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:02:48,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:02:48,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:02:48,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:02:48,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:02:48,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:02:48,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:02:48,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:02:48,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:02:48,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:02:48,717 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:02:48,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:02:48,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:02:48,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:02:48,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:02:48,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:02:48,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:02:48,738 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:02:48,739 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:02:48,767 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:02:48,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:02:48,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:02:48,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:02:48,770 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:02:48,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:02:48,770 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:02:48,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:02:48,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:02:48,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:02:48,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:02:48,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:02:48,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:02:48,773 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:02:48,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:02:48,774 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:02:48,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:02:48,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:02:48,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:02:48,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:02:48,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:02:48,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:02:48,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:02:48,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:02:48,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:02:48,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:02:48,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:02:48,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:02:48,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:02:49,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:02:49,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:02:49,141 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:02:49,144 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:02:49,145 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:02:49,147 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b.i [2019-10-15 03:02:49,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af75a76e7/24d8dd15978a4c0f8889886f4c38166a/FLAG0156c5e39 [2019-10-15 03:02:49,794 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:02:49,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b.i [2019-10-15 03:02:49,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af75a76e7/24d8dd15978a4c0f8889886f4c38166a/FLAG0156c5e39 [2019-10-15 03:02:50,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af75a76e7/24d8dd15978a4c0f8889886f4c38166a [2019-10-15 03:02:50,194 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:02:50,195 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:02:50,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:50,197 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:02:50,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:02:50,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:50" (1/1) ... [2019-10-15 03:02:50,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@741fc40b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50, skipping insertion in model container [2019-10-15 03:02:50,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:02:50" (1/1) ... [2019-10-15 03:02:50,211 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:02:50,228 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:02:50,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:50,447 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:02:50,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:02:50,484 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:02:50,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50 WrapperNode [2019-10-15 03:02:50,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:02:50,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:02:50,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:02:50,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:02:50,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50" (1/1) ... [2019-10-15 03:02:50,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50" (1/1) ... [2019-10-15 03:02:50,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50" (1/1) ... [2019-10-15 03:02:50,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50" (1/1) ... [2019-10-15 03:02:50,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50" (1/1) ... [2019-10-15 03:02:50,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50" (1/1) ... [2019-10-15 03:02:50,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50" (1/1) ... [2019-10-15 03:02:50,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:02:50,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:02:50,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:02:50,611 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:02:50,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:02:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:02:50,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:02:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:02:50,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:02:50,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:02:50,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:02:50,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:02:50,673 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:02:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:02:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:02:50,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:02:50,963 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:02:50,964 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:02:50,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:50 BoogieIcfgContainer [2019-10-15 03:02:50,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:02:50,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:02:50,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:02:50,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:02:50,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:02:50" (1/3) ... [2019-10-15 03:02:50,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33efafb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:50, skipping insertion in model container [2019-10-15 03:02:50,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:02:50" (2/3) ... [2019-10-15 03:02:50,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33efafb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:02:50, skipping insertion in model container [2019-10-15 03:02:50,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:02:50" (3/3) ... [2019-10-15 03:02:50,977 INFO L109 eAbstractionObserver]: Analyzing ICFG gj2007b.i [2019-10-15 03:02:50,990 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:02:51,000 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:02:51,012 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:02:51,040 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:02:51,040 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:02:51,040 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:02:51,040 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:02:51,041 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:02:51,041 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:02:51,041 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:02:51,041 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:02:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-10-15 03:02:51,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:02:51,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:51,065 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:51,066 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:51,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:51,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1985007014, now seen corresponding path program 1 times [2019-10-15 03:02:51,081 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:51,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12114207] [2019-10-15 03:02:51,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:51,082 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:51,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:51,319 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12114207] [2019-10-15 03:02:51,319 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:02:51,320 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:02:51,320 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952981211] [2019-10-15 03:02:51,325 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:02:51,325 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:51,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:02:51,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:02:51,340 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2019-10-15 03:02:51,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:51,441 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2019-10-15 03:02:51,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:02:51,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 03:02:51,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:51,461 INFO L225 Difference]: With dead ends: 38 [2019-10-15 03:02:51,461 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 03:02:51,468 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:02:51,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 03:02:51,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-10-15 03:02:51,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-15 03:02:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-10-15 03:02:51,530 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2019-10-15 03:02:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:51,531 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-10-15 03:02:51,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:02:51,532 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-10-15 03:02:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 03:02:51,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:51,533 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:51,534 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:51,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1314726279, now seen corresponding path program 1 times [2019-10-15 03:02:51,535 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:51,536 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664667260] [2019-10-15 03:02:51,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:51,536 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:51,537 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:51,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:51,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664667260] [2019-10-15 03:02:51,641 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252249467] [2019-10-15 03:02:51,641 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 [2019-10-15 03:02:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:51,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:02:51,699 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:02:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:51,793 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:02:51,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:02:51,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:51,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1566422555] [2019-10-15 03:02:51,884 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-15 03:02:51,884 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:02:51,892 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:02:51,904 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:02:51,905 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:02:51,974 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:02:52,225 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 3 for LOIs [2019-10-15 03:02:52,264 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:02:52,268 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:02:52,418 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 03:02:52,419 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6, 6] total 13 [2019-10-15 03:02:52,419 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653047829] [2019-10-15 03:02:52,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:02:52,422 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:52,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:02:52,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:02:52,425 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2019-10-15 03:02:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:52,484 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2019-10-15 03:02:52,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:02:52,492 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-15 03:02:52,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:52,508 INFO L225 Difference]: With dead ends: 26 [2019-10-15 03:02:52,509 INFO L226 Difference]: Without dead ends: 22 [2019-10-15 03:02:52,512 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:02:52,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-15 03:02:52,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 16. [2019-10-15 03:02:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-15 03:02:52,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-10-15 03:02:52,527 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2019-10-15 03:02:52,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:52,528 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-10-15 03:02:52,531 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:02:52,532 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-10-15 03:02:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-15 03:02:52,532 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:52,532 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:52,734 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:02:52,734 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:52,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:52,735 INFO L82 PathProgramCache]: Analyzing trace with hash 723289379, now seen corresponding path program 1 times [2019-10-15 03:02:52,735 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:52,736 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534824204] [2019-10-15 03:02:52,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:52,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:52,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:52,800 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534824204] [2019-10-15 03:02:52,800 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:02:52,801 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:02:52,801 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782215878] [2019-10-15 03:02:52,801 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:02:52,802 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:52,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:02:52,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:02:52,803 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 6 states. [2019-10-15 03:02:52,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:52,918 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2019-10-15 03:02:52,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:02:52,919 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-10-15 03:02:52,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:52,920 INFO L225 Difference]: With dead ends: 27 [2019-10-15 03:02:52,920 INFO L226 Difference]: Without dead ends: 17 [2019-10-15 03:02:52,921 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:02:52,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-15 03:02:52,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-15 03:02:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-15 03:02:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-15 03:02:52,930 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2019-10-15 03:02:52,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:52,930 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-15 03:02:52,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:02:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-15 03:02:52,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 03:02:52,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:02:52,933 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:02:52,933 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:02:52,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:02:52,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1183148956, now seen corresponding path program 1 times [2019-10-15 03:02:52,934 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:02:52,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619455391] [2019-10-15 03:02:52,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:52,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:02:52,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:02:52,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:53,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619455391] [2019-10-15 03:02:53,058 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804817678] [2019-10-15 03:02:53,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-15 03:02:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:02:53,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-15 03:02:53,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:02:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:53,207 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:02:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:02:53,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [933962841] [2019-10-15 03:02:53,307 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-15 03:02:53,307 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:02:53,308 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:02:53,309 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:02:53,310 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:02:53,333 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:02:53,518 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-15 03:02:53,559 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:02:53,562 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:02:53,803 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:02:53,804 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 6, 7] total 20 [2019-10-15 03:02:53,804 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551558342] [2019-10-15 03:02:53,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-15 03:02:53,805 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:02:53,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-15 03:02:53,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:02:53,807 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 20 states. [2019-10-15 03:02:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:02:54,125 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-10-15 03:02:54,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:02:54,126 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 16 [2019-10-15 03:02:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:02:54,126 INFO L225 Difference]: With dead ends: 20 [2019-10-15 03:02:54,126 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 03:02:54,127 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2019-10-15 03:02:54,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 03:02:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 03:02:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 03:02:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 03:02:54,128 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-10-15 03:02:54,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:02:54,128 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 03:02:54,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-15 03:02:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 03:02:54,129 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 03:02:54,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:02:54,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 03:02:54,494 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2019-10-15 03:02:54,700 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 22 [2019-10-15 03:02:54,706 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 03:02:54,707 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:02:54,707 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:02:54,707 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 03:02:54,707 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 03:02:54,707 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 03:02:54,707 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2019-10-15 03:02:54,707 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2019-10-15 03:02:54,708 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-15 03:02:54,708 INFO L439 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 (+ main_~n~0 2147483648))) (.cse2 (<= main_~n~0 main_~x~0))) (or (and .cse0 .cse1 (<= main_~x~0 0) .cse2 (<= 0 main_~x~0)) (and (<= main_~n~0 2147483647) .cse0 (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) .cse1 .cse2 (< main_~m~0 (+ main_~x~0 1))))) [2019-10-15 03:02:54,708 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 19) the Hoare annotation is: (and (<= main_~n~0 2147483647) (<= 0 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) (<= 0 (+ main_~n~0 2147483648)) (< main_~m~0 (+ main_~x~0 1))) [2019-10-15 03:02:54,708 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 19) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0)) (.cse1 (<= 0 (+ main_~n~0 2147483648))) (.cse2 (<= main_~n~0 main_~x~0))) (or (and .cse0 .cse1 .cse2 (<= main_~x~0 0) (<= 0 main_~x~0)) (and (<= main_~n~0 2147483647) .cse0 (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) .cse1 .cse2 (< main_~m~0 (+ main_~x~0 1))))) [2019-10-15 03:02:54,709 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-15 03:02:54,709 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-15 03:02:54,709 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-15 03:02:54,709 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-15 03:02:54,709 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-15 03:02:54,710 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-15 03:02:54,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:02:54 BoogieIcfgContainer [2019-10-15 03:02:54,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:02:54,733 INFO L168 Benchmark]: Toolchain (without parser) took 4536.94 ms. Allocated memory was 145.2 MB in the beginning and 243.3 MB in the end (delta: 98.0 MB). Free memory was 101.2 MB in the beginning and 168.4 MB in the end (delta: -67.2 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:54,734 INFO L168 Benchmark]: CDTParser took 3.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 03:02:54,735 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.15 ms. Allocated memory is still 145.2 MB. Free memory was 101.0 MB in the beginning and 91.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:54,736 INFO L168 Benchmark]: Boogie Preprocessor took 124.70 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 91.7 MB in the beginning and 182.6 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:54,737 INFO L168 Benchmark]: RCFGBuilder took 355.12 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 168.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:54,738 INFO L168 Benchmark]: TraceAbstraction took 3763.10 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 168.9 MB in the beginning and 168.4 MB in the end (delta: 512.7 kB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2019-10-15 03:02:54,743 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.19 ms. Allocated memory is still 145.2 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 289.15 ms. Allocated memory is still 145.2 MB. Free memory was 101.0 MB in the beginning and 91.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.70 ms. Allocated memory was 145.2 MB in the beginning and 203.9 MB in the end (delta: 58.7 MB). Free memory was 91.7 MB in the beginning and 182.6 MB in the end (delta: -90.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 355.12 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 168.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3763.10 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 168.9 MB in the beginning and 168.4 MB in the end (delta: 512.7 kB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((n <= 2147483647 && 0 <= m) && (n <= 0 || m < n)) && 0 <= n + 2147483648) && m < x + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 3.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 47 SDtfs, 37 SDslu, 170 SDs, 0 SdLazy, 126 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=1, 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, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 121 HoareAnnotationTreeSize, 14 FomulaSimplifications, 227 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 139 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3392 SizeOfPredicates, 9 NumberOfNonLiveVariables, 77 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 7/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 640, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 51, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 25, TOOLS_POST_TIME[ms]: 69, TOOLS_POST_CALL_APPLICATIONS: 13, TOOLS_POST_CALL_TIME[ms]: 19, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME[ms]: 3, TOOLS_QUANTIFIERELIM_APPLICATIONS: 44, TOOLS_QUANTIFIERELIM_TIME[ms]: 72, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 25, FLUID_QUERY_TIME[ms]: 6, FLUID_QUERIES: 57, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 43, DOMAIN_JOIN_TIME[ms]: 315, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 108, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 13, DOMAIN_ISBOTTOM_APPLICATIONS: 4, DOMAIN_ISBOTTOM_TIME[ms]: 6, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 313, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 312, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 3, CALL_SUMMARIZER_OVERALL_TIME[ms]: 16, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 16, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 12, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 23, DAG_COMPRESSION_PROCESSED_NODES: 138, DAG_COMPRESSION_RETAINED_NODES: 91, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...