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/nla-digbench/cohencu.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:00:31,457 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:00:31,460 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:00:31,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:00:31,479 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:00:31,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:00:31,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:00:31,496 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:00:31,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:00:31,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:00:31,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:00:31,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:00:31,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:00:31,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:00:31,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:00:31,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:00:31,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:00:31,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:00:31,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:00:31,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:00:31,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:00:31,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:00:31,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:00:31,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:00:31,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 23:00:31,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:00:31,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:00:31,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:00:31,534 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 [2019-10-13 23:00:31,555 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:00:31,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:00:31,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:00:31,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:00:31,558 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:00:31,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:00:31,559 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:00:31,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:00:31,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:00:31,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:00:31,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:00:31,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:00:31,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:00:31,561 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:00:31,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:00:31,562 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:00:31,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:00:31,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:00:31,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:00:31,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:00:31,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:00:31,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:00:31,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:00:31,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:00:31,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:00:31,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:00:31,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:00:31,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:00:31,565 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 [2019-10-13 23:00:31,855 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:00:31,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:00:31,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:00:31,876 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:00:31,876 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:00:31,877 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohencu.c [2019-10-13 23:00:31,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3799eb7c/0b6ee6ce5db04a5ba179c724616b4b70/FLAG88d6d24cb [2019-10-13 23:00:32,422 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:00:32,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohencu.c [2019-10-13 23:00:32,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3799eb7c/0b6ee6ce5db04a5ba179c724616b4b70/FLAG88d6d24cb [2019-10-13 23:00:32,806 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3799eb7c/0b6ee6ce5db04a5ba179c724616b4b70 [2019-10-13 23:00:32,819 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:00:32,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:00:32,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:00:32,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:00:32,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:00:32,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:00:32" (1/1) ... [2019-10-13 23:00:32,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:32, skipping insertion in model container [2019-10-13 23:00:32,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:00:32" (1/1) ... [2019-10-13 23:00:32,839 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:00:32,856 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:00:33,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:00:33,024 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:00:33,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:00:33,061 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:00:33,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33 WrapperNode [2019-10-13 23:00:33,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:00:33,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:00:33,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:00:33,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:00:33,155 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33" (1/1) ... [2019-10-13 23:00:33,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33" (1/1) ... [2019-10-13 23:00:33,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33" (1/1) ... [2019-10-13 23:00:33,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33" (1/1) ... [2019-10-13 23:00:33,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33" (1/1) ... [2019-10-13 23:00:33,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33" (1/1) ... [2019-10-13 23:00:33,177 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33" (1/1) ... [2019-10-13 23:00:33,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:00:33,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:00:33,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:00:33,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:00:33,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33" (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 [2019-10-13 23:00:33,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:00:33,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:00:33,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 23:00:33,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:00:33,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:00:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:00:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 23:00:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 23:00:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:00:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:00:33,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:00:33,491 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:00:33,492 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 23:00:33,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:00:33 BoogieIcfgContainer [2019-10-13 23:00:33,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:00:33,495 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:00:33,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:00:33,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:00:33,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:00:32" (1/3) ... [2019-10-13 23:00:33,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70730495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:00:33, skipping insertion in model container [2019-10-13 23:00:33,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:33" (2/3) ... [2019-10-13 23:00:33,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70730495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:00:33, skipping insertion in model container [2019-10-13 23:00:33,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:00:33" (3/3) ... [2019-10-13 23:00:33,504 INFO L109 eAbstractionObserver]: Analyzing ICFG cohencu.c [2019-10-13 23:00:33,514 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:00:33,524 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:00:33,537 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:00:33,578 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:00:33,578 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:00:33,578 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:00:33,578 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:00:33,578 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:00:33,579 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:00:33,579 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:00:33,579 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:00:33,600 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-13 23:00:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 23:00:33,606 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:33,607 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:33,609 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:33,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:33,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2104671198, now seen corresponding path program 1 times [2019-10-13 23:00:33,627 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:33,627 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664068265] [2019-10-13 23:00:33,627 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:33,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:33,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:33,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:33,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664068265] [2019-10-13 23:00:33,731 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:00:33,731 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:00:33,732 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479146105] [2019-10-13 23:00:33,735 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:00:33,736 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:33,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:00:33,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:00:33,753 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-13 23:00:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:33,800 INFO L93 Difference]: Finished difference Result 51 states and 86 transitions. [2019-10-13 23:00:33,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:00:33,802 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-13 23:00:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:33,817 INFO L225 Difference]: With dead ends: 51 [2019-10-13 23:00:33,818 INFO L226 Difference]: Without dead ends: 24 [2019-10-13 23:00:33,827 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:00:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-13 23:00:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-13 23:00:33,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-13 23:00:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2019-10-13 23:00:33,908 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2019-10-13 23:00:33,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:33,909 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2019-10-13 23:00:33,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:00:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2019-10-13 23:00:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 23:00:33,911 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:33,912 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:33,912 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:33,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:33,914 INFO L82 PathProgramCache]: Analyzing trace with hash 2134586928, now seen corresponding path program 1 times [2019-10-13 23:00:33,915 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:33,915 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759004666] [2019-10-13 23:00:33,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:33,916 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:33,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:34,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:34,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759004666] [2019-10-13 23:00:34,075 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:00:34,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:00:34,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198022074] [2019-10-13 23:00:34,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:00:34,078 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:34,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:00:34,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:00:34,079 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 5 states. [2019-10-13 23:00:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:34,203 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2019-10-13 23:00:34,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:00:34,204 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-13 23:00:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:34,206 INFO L225 Difference]: With dead ends: 30 [2019-10-13 23:00:34,206 INFO L226 Difference]: Without dead ends: 28 [2019-10-13 23:00:34,207 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 [2019-10-13 23:00:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-13 23:00:34,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-13 23:00:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-13 23:00:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2019-10-13 23:00:34,221 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2019-10-13 23:00:34,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:34,222 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2019-10-13 23:00:34,222 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:00:34,222 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2019-10-13 23:00:34,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 23:00:34,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:34,223 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:34,223 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:34,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1496147284, now seen corresponding path program 1 times [2019-10-13 23:00:34,224 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:34,225 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573729000] [2019-10-13 23:00:34,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:34,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:34,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:34,235 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:00:34,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45806034] [2019-10-13 23:00:34,236 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 [2019-10-13 23:00:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:34,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-13 23:00:34,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:34,415 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:34,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:00:34,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:00:34,551 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:00:34,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:34,595 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573729000] [2019-10-13 23:00:34,596 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:00:34,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45806034] [2019-10-13 23:00:34,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1577157049] [2019-10-13 23:00:34,621 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-10-13 23:00:34,621 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:00:34,630 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:00:34,638 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:00:34,639 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:00:34,700 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:00:34,877 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-13 23:00:34,934 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:00:34,939 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:00:34,939 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:00:34,940 INFO L193 IcfgInterpreter]: Reachable states at location L25-2 satisfy 38#(and (= main_~n~0 0) (<= 0 main_~n~0) (<= main_~n~0 0) (= main_~y~0 1) (<= 1 main_~y~0) (<= main_~z~0 6) (= main_~z~0 6) (<= main_~a~0 2147483647) (<= 6 main_~z~0) (<= main_~x~0 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~y~0 1)) [2019-10-13 23:00:34,940 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 105#true [2019-10-13 23:00:34,940 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 101#(and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 23:00:34,941 INFO L193 IcfgInterpreter]: Reachable states at location L11 satisfy 86#false [2019-10-13 23:00:34,941 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 91#false [2019-10-13 23:00:34,941 INFO L193 IcfgInterpreter]: Reachable states at location L26-1 satisfy 62#(and (= main_~n~0 0) (<= 0 main_~n~0) (<= main_~n~0 0) (= main_~y~0 1) (<= 1 main_~y~0) (<= main_~z~0 6) (= main_~z~0 6) (<= main_~a~0 2147483647) (<= 6 main_~z~0) (<= main_~x~0 0) (<= 0 main_~x~0) (= main_~z~0 (+ (* main_~n~0 6) 6)) (= main_~x~0 0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~y~0 1)) [2019-10-13 23:00:34,942 INFO L193 IcfgInterpreter]: Reachable states at location L26 satisfy 43#(and (= main_~n~0 0) (<= 0 main_~n~0) (<= main_~n~0 0) (= main_~y~0 1) (<= 1 main_~y~0) (<= main_~z~0 6) (= main_~z~0 6) (<= main_~a~0 2147483647) (<= 6 main_~z~0) (<= main_~x~0 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~y~0 1)) [2019-10-13 23:00:34,942 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:00:34,942 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:00:34,942 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 110#true [2019-10-13 23:00:34,943 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:00:34,943 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 76#(and (= |__VERIFIER_assert_#in~cond| 1) (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:00:34,944 INFO L193 IcfgInterpreter]: Reachable states at location L10 satisfy 81#(and (= |__VERIFIER_assert_#in~cond| 1) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 23:00:34,944 INFO L193 IcfgInterpreter]: Reachable states at location L10-2 satisfy 96#(and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2019-10-13 23:00:35,078 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:00:35,079 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2019-10-13 23:00:35,079 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936217928] [2019-10-13 23:00:35,082 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:00:35,082 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:35,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:00:35,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:00:35,083 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand 5 states. [2019-10-13 23:00:35,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:35,244 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2019-10-13 23:00:35,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:00:35,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2019-10-13 23:00:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:35,247 INFO L225 Difference]: With dead ends: 51 [2019-10-13 23:00:35,247 INFO L226 Difference]: Without dead ends: 43 [2019-10-13 23:00:35,250 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2019-10-13 23:00:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-13 23:00:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-10-13 23:00:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-13 23:00:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2019-10-13 23:00:35,277 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 15 [2019-10-13 23:00:35,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:35,278 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2019-10-13 23:00:35,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:00:35,278 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2019-10-13 23:00:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-13 23:00:35,282 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:35,282 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:35,486 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:35,486 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:35,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:35,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1836902192, now seen corresponding path program 1 times [2019-10-13 23:00:35,487 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:35,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273837404] [2019-10-13 23:00:35,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:35,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:35,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:35,510 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:00:35,510 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1975321903] [2019-10-13 23:00:35,511 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 [2019-10-13 23:00:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:35,559 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-13 23:00:35,563 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 23:00:35,643 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2019-10-13 23:00:35,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273837404] [2019-10-13 23:00:35,774 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:00:35,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975321903] [2019-10-13 23:00:35,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [697531462] [2019-10-13 23:00:35,776 INFO L162 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-10-13 23:00:35,776 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:00:35,777 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:00:35,777 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:00:35,777 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:00:35,788 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:00:36,689 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-13 23:00:36,759 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:00:36,762 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:00:36,762 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:00:36,762 INFO L193 IcfgInterpreter]: Reachable states at location L25-2 satisfy 38#(and (= main_~n~0 0) (<= 0 main_~n~0) (<= main_~n~0 0) (= main_~y~0 1) (<= 1 main_~y~0) (<= main_~z~0 6) (= main_~z~0 6) (<= main_~a~0 2147483647) (<= 6 main_~z~0) (<= main_~x~0 0) (<= 0 main_~x~0) (= main_~x~0 0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~y~0 1)) [2019-10-13 23:00:36,762 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 462#true [2019-10-13 23:00:36,763 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 458#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:00:36,763 INFO L193 IcfgInterpreter]: Reachable states at location L11 satisfy 443#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:36,763 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 448#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:36,764 INFO L193 IcfgInterpreter]: Reachable states at location L26-1 satisfy 197#(and (<= 0 main_~n~0) (<= 1 main_~y~0) (= main_~z~0 (+ (* main_~n~0 6) 6)) (<= 0 (+ main_~a~0 2147483648)) (<= 6 main_~z~0) (<= main_~a~0 2147483647)) [2019-10-13 23:00:36,764 INFO L193 IcfgInterpreter]: Reachable states at location L26 satisfy 185#(and (<= 0 main_~n~0) (<= 1 main_~y~0) (<= 0 (+ main_~a~0 2147483648)) (<= 6 main_~z~0) (<= main_~a~0 2147483647)) [2019-10-13 23:00:36,764 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:00:36,764 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:00:36,765 INFO L193 IcfgInterpreter]: Reachable states at location L27 satisfy 424#(and (<= 0 main_~n~0) (<= 1 main_~y~0) (= main_~z~0 (+ (* main_~n~0 6) 6)) (= (+ (* (* main_~n~0 3) main_~n~0) (* main_~n~0 3) 1) main_~y~0) (<= 0 (+ main_~a~0 2147483648)) (<= 6 main_~z~0) (<= main_~a~0 2147483647) (<= 2 main_~y~0)) [2019-10-13 23:00:36,766 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 467#true [2019-10-13 23:00:36,766 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:00:36,766 INFO L193 IcfgInterpreter]: Reachable states at location L28 satisfy 412#false [2019-10-13 23:00:36,767 INFO L193 IcfgInterpreter]: Reachable states at location L29 satisfy 2#false [2019-10-13 23:00:36,767 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 433#(and (or (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)))) [2019-10-13 23:00:36,767 INFO L193 IcfgInterpreter]: Reachable states at location L10 satisfy 438#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (or (and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1)))) [2019-10-13 23:00:36,768 INFO L193 IcfgInterpreter]: Reachable states at location L30 satisfy 2#false [2019-10-13 23:00:36,768 INFO L193 IcfgInterpreter]: Reachable states at location L10-2 satisfy 453#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:00:37,106 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 23:00:37,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 10] total 21 [2019-10-13 23:00:37,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686633139] [2019-10-13 23:00:37,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-13 23:00:37,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:37,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-13 23:00:37,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-10-13 23:00:37,110 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand 21 states. [2019-10-13 23:00:37,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:37,177 INFO L93 Difference]: Finished difference Result 47 states and 58 transitions. [2019-10-13 23:00:37,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 23:00:37,178 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 42 [2019-10-13 23:00:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:37,179 INFO L225 Difference]: With dead ends: 47 [2019-10-13 23:00:37,179 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 23:00:37,183 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-10-13 23:00:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 23:00:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 23:00:37,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 23:00:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 23:00:37,185 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2019-10-13 23:00:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:37,185 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 23:00:37,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-13 23:00:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 23:00:37,186 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 23:00:37,386 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:37,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 23:00:37,655 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 23:00:37,656 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 23:00:37,656 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 23:00:37,656 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 23:00:37,656 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 23:00:37,656 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 23:00:37,656 INFO L439 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: false [2019-10-13 23:00:37,657 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: false [2019-10-13 23:00:37,657 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 48) no Hoare annotation was computed. [2019-10-13 23:00:37,657 INFO L439 ceAbstractionStarter]: At program point L25-2(lines 25 38) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-13 23:00:37,657 INFO L439 ceAbstractionStarter]: At program point L25-3(lines 25 38) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-13 23:00:37,658 INFO L439 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-13 23:00:37,658 INFO L439 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-13 23:00:37,658 INFO L439 ceAbstractionStarter]: At program point L40(line 40) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-13 23:00:37,658 INFO L443 ceAbstractionStarter]: For program point L30(lines 25 38) no Hoare annotation was computed. [2019-10-13 23:00:37,658 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 48) the Hoare annotation is: true [2019-10-13 23:00:37,659 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: false [2019-10-13 23:00:37,659 INFO L439 ceAbstractionStarter]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-13 23:00:37,659 INFO L439 ceAbstractionStarter]: At program point L26-1(line 26) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-13 23:00:37,659 INFO L443 ceAbstractionStarter]: For program point L45(line 45) no Hoare annotation was computed. [2019-10-13 23:00:37,659 INFO L439 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-13 23:00:37,660 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: (let ((.cse0 (* 6 main_~n~0))) (and (= main_~y~0 1) (= main_~x~0 0) (= main_~z~0 6) (<= (+ .cse0 6) main_~z~0) (<= 0 (+ main_~a~0 2147483648)) (<= main_~a~0 2147483647) (< main_~z~0 (+ .cse0 7)))) [2019-10-13 23:00:37,660 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-13 23:00:37,660 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-10-13 23:00:37,660 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-10-13 23:00:37,660 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-10-13 23:00:37,661 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-10-13 23:00:37,661 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-10-13 23:00:37,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:00:37 BoogieIcfgContainer [2019-10-13 23:00:37,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 23:00:37,688 INFO L168 Benchmark]: Toolchain (without parser) took 4865.93 ms. Allocated memory was 138.9 MB in the beginning and 245.9 MB in the end (delta: 107.0 MB). Free memory was 102.7 MB in the beginning and 144.7 MB in the end (delta: -42.1 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:37,689 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 23:00:37,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.12 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 92.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:37,695 INFO L168 Benchmark]: Boogie Preprocessor took 114.18 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 180.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:37,695 INFO L168 Benchmark]: RCFGBuilder took 314.94 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 166.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:37,701 INFO L168 Benchmark]: TraceAbstraction took 4188.90 ms. Allocated memory was 201.9 MB in the beginning and 245.9 MB in the end (delta: 44.0 MB). Free memory was 166.8 MB in the beginning and 144.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:37,705 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.12 ms. Allocated memory is still 138.9 MB. Free memory was 102.4 MB in the beginning and 92.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.18 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.4 MB in the beginning and 180.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 314.94 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 166.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4188.90 ms. Allocated memory was 201.9 MB in the beginning and 245.9 MB in the end (delta: 44.0 MB). Free memory was 166.8 MB in the beginning and 144.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: (((((y == 1 && x == 0) && z == 6) && 6 * n + 6 <= z) && 0 <= a + 2147483648) && a <= 2147483647) && z < 6 * n + 7 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 7, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 105 SDtfs, 24 SDslu, 179 SDs, 0 SdLazy, 127 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 136 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 49 PreInvPairs, 58 NumberOfFragments, 296 HoareAnnotationTreeSize, 49 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 17296 SizeOfPredicates, 7 NumberOfNonLiveVariables, 137 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 116/154 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 1316, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 139, DAG_INTERPRETER_EARLY_EXITS: 5, TOOLS_POST_APPLICATIONS: 28, TOOLS_POST_TIME[ms]: 14, TOOLS_POST_CALL_APPLICATIONS: 68, TOOLS_POST_CALL_TIME[ms]: 286, TOOLS_POST_RETURN_APPLICATIONS: 58, TOOLS_POST_RETURN_TIME[ms]: 68, TOOLS_QUANTIFIERELIM_APPLICATIONS: 154, TOOLS_QUANTIFIERELIM_TIME[ms]: 319, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 12, FLUID_QUERY_TIME[ms]: 7, FLUID_QUERIES: 142, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 101, DOMAIN_JOIN_TIME[ms]: 741, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 2, DOMAIN_WIDEN_TIME[ms]: 27, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME[ms]: 7, DOMAIN_ISBOTTOM_APPLICATIONS: 40, DOMAIN_ISBOTTOM_TIME[ms]: 62, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 438, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 437, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 58, CALL_SUMMARIZER_CACHE_MISSES: 4, CALL_SUMMARIZER_OVERALL_TIME[ms]: 24, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 23, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 23, DAG_COMPRESSION_PROCESSED_NODES: 271, DAG_COMPRESSION_RETAINED_NODES: 170, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...