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 -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:15:30,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:15:30,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:15:30,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:15:30,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:15:30,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:15:30,516 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:15:30,518 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:15:30,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:15:30,521 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:15:30,522 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:15:30,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:15:30,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:15:30,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:15:30,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:15:30,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:15:30,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:15:30,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:15:30,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:15:30,531 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:15:30,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:15:30,534 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:15:30,535 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:15:30,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:15:30,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:15:30,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:15:30,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:15:30,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:15:30,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:15:30,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:15:30,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:15:30,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:15:30,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:15:30,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:15:30,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:15:30,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:15:30,549 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 [2019-10-14 23:15:30,564 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:15:30,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:15:30,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:15:30,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:15:30,566 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:15:30,566 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:15:30,566 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:15:30,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:15:30,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:15:30,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:15:30,567 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:15:30,567 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:15:30,567 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:15:30,567 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:15:30,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:15:30,568 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:15:30,568 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:15:30,568 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:15:30,568 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:15:30,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:15:30,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:15:30,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:15:30,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:15:30,570 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:15:30,570 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:15:30,570 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:15:30,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:15:30,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:15:30,571 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:15:30,837 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:15:30,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:15:30,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:15:30,859 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:15:30,859 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:15:30,860 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2019-10-14 23:15:30,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3a559d7/d9261b55f3cc4de1a0b867ea86c885a2/FLAGf68adac1f [2019-10-14 23:15:31,431 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:15:31,432 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_variant.i [2019-10-14 23:15:31,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3a559d7/d9261b55f3cc4de1a0b867ea86c885a2/FLAGf68adac1f [2019-10-14 23:15:31,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a3a559d7/d9261b55f3cc4de1a0b867ea86c885a2 [2019-10-14 23:15:31,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:15:31,812 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:15:31,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:31,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:15:31,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:15:31,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:31" (1/1) ... [2019-10-14 23:15:31,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6509102 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:31, skipping insertion in model container [2019-10-14 23:15:31,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:15:31" (1/1) ... [2019-10-14 23:15:31,829 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:15:31,849 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:15:32,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:32,041 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:15:32,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:15:32,074 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:15:32,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32 WrapperNode [2019-10-14 23:15:32,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:15:32,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:15:32,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:15:32,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:15:32,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32" (1/1) ... [2019-10-14 23:15:32,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32" (1/1) ... [2019-10-14 23:15:32,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32" (1/1) ... [2019-10-14 23:15:32,184 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32" (1/1) ... [2019-10-14 23:15:32,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32" (1/1) ... [2019-10-14 23:15:32,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32" (1/1) ... [2019-10-14 23:15:32,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32" (1/1) ... [2019-10-14 23:15:32,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:15:32,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:15:32,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:15:32,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:15:32,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32" (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 [2019-10-14 23:15:32,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:15:32,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:15:32,249 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:15:32,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:15:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:15:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:15:32,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:15:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:15:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:15:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:15:32,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:15:32,412 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:15:32,413 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:15:32,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:32 BoogieIcfgContainer [2019-10-14 23:15:32,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:15:32,416 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:15:32,416 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:15:32,419 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:15:32,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:15:31" (1/3) ... [2019-10-14 23:15:32,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a22a692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:32, skipping insertion in model container [2019-10-14 23:15:32,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:15:32" (2/3) ... [2019-10-14 23:15:32,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a22a692 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:15:32, skipping insertion in model container [2019-10-14 23:15:32,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:15:32" (3/3) ... [2019-10-14 23:15:32,424 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2019-10-14 23:15:32,434 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:15:32,442 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:15:32,454 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:15:32,480 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:15:32,480 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:15:32,481 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:15:32,483 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:15:32,483 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:15:32,483 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:15:32,483 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:15:32,483 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:15:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-14 23:15:32,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-14 23:15:32,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:32,512 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:32,513 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:32,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:32,518 INFO L82 PathProgramCache]: Analyzing trace with hash 578729635, now seen corresponding path program 1 times [2019-10-14 23:15:32,526 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:32,526 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74137250] [2019-10-14 23:15:32,526 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:32,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:32,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:32,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:32,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74137250] [2019-10-14 23:15:32,632 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:32,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:15:32,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215837790] [2019-10-14 23:15:32,637 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:15:32,637 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:32,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:15:32,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:15:32,650 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-14 23:15:32,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:32,669 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-14 23:15:32,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:15:32,671 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-10-14 23:15:32,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:32,679 INFO L225 Difference]: With dead ends: 31 [2019-10-14 23:15:32,679 INFO L226 Difference]: Without dead ends: 12 [2019-10-14 23:15:32,683 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:15:32,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-14 23:15:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-14 23:15:32,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-14 23:15:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-14 23:15:32,718 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2019-10-14 23:15:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:32,719 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-14 23:15:32,719 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:15:32,719 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-14 23:15:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-14 23:15:32,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:32,720 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:32,720 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:32,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:32,721 INFO L82 PathProgramCache]: Analyzing trace with hash 575035551, now seen corresponding path program 1 times [2019-10-14 23:15:32,721 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:32,721 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521206626] [2019-10-14 23:15:32,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:32,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:32,722 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:32,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:32,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521206626] [2019-10-14 23:15:32,779 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:15:32,779 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:15:32,779 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612023608] [2019-10-14 23:15:32,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:15:32,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:32,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:15:32,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:15:32,785 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2019-10-14 23:15:32,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:32,820 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2019-10-14 23:15:32,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:15:32,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-14 23:15:32,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:32,823 INFO L225 Difference]: With dead ends: 18 [2019-10-14 23:15:32,824 INFO L226 Difference]: Without dead ends: 13 [2019-10-14 23:15:32,825 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:15:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-14 23:15:32,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-14 23:15:32,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-14 23:15:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-10-14 23:15:32,836 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2019-10-14 23:15:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:32,836 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-10-14 23:15:32,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:15:32,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-10-14 23:15:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-14 23:15:32,837 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:32,837 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:32,839 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:32,840 INFO L82 PathProgramCache]: Analyzing trace with hash 681770644, now seen corresponding path program 1 times [2019-10-14 23:15:32,840 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:32,841 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095980718] [2019-10-14 23:15:32,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:32,842 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:32,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:33,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095980718] [2019-10-14 23:15:33,202 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279968660] [2019-10-14 23:15:33,203 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 [2019-10-14 23:15:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:33,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-14 23:15:33,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:33,408 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:15:33,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:33,453 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:15:33,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2019-10-14 23:15:33,453 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329302965] [2019-10-14 23:15:33,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-14 23:15:33,454 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:33,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-14 23:15:33,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:15:33,456 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 13 states. [2019-10-14 23:15:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:33,548 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-10-14 23:15:33,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:15:33,549 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2019-10-14 23:15:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:33,550 INFO L225 Difference]: With dead ends: 19 [2019-10-14 23:15:33,550 INFO L226 Difference]: Without dead ends: 14 [2019-10-14 23:15:33,552 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:15:33,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-14 23:15:33,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-14 23:15:33,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-14 23:15:33,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-10-14 23:15:33,561 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2019-10-14 23:15:33,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:33,562 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-10-14 23:15:33,562 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-14 23:15:33,562 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-10-14 23:15:33,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:15:33,563 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:15:33,563 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:15:33,770 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:33,771 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:15:33,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:15:33,772 INFO L82 PathProgramCache]: Analyzing trace with hash -304408769, now seen corresponding path program 2 times [2019-10-14 23:15:33,773 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:15:33,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706940621] [2019-10-14 23:15:33,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:33,774 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:15:33,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:15:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:15:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:15:33,959 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706940621] [2019-10-14 23:15:33,960 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512006835] [2019-10-14 23:15:33,960 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-10-14 23:15:33,990 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:15:33,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:15:33,993 WARN L254 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-14 23:15:33,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:15:34,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:15:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:15:34,285 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:15:34,285 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2019-10-14 23:15:34,286 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270299373] [2019-10-14 23:15:34,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:15:34,286 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:15:34,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:15:34,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:15:34,288 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states. [2019-10-14 23:15:34,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:15:34,575 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2019-10-14 23:15:34,575 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:15:34,576 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2019-10-14 23:15:34,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:15:34,576 INFO L225 Difference]: With dead ends: 16 [2019-10-14 23:15:34,576 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:15:34,577 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:15:34,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:15:34,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:15:34,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:15:34,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:15:34,578 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2019-10-14 23:15:34,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:15:34,579 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:15:34,579 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-14 23:15:34,579 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:15:34,579 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:15:34,784 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:15:34,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:15:34,939 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-14 23:15:34,939 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:15:34,939 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:15:34,939 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:15:34,939 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:15:34,940 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:15:34,940 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2019-10-14 23:15:34,940 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2019-10-14 23:15:34,940 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-10-14 23:15:34,940 INFO L443 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2019-10-14 23:15:34,940 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 20) the Hoare annotation is: (let ((.cse0 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse0 main_~hi~0) (<= main_~hi~0 .cse0) (<= main_~lo~0 main_~hi~0))) [2019-10-14 23:15:34,941 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: (or (let ((.cse1 (+ main_~hi~0 1))) (let ((.cse0 (div .cse1 2))) (and (<= main_~lo~0 1) (<= .cse0 (+ main_~mid~0 1)) (<= .cse0 1) (<= 1 main_~lo~0) (= 0 (mod .cse1 2)) (< 0 .cse0)))) (let ((.cse2 (+ (* 2 main_~mid~0) main_~lo~0))) (and (<= .cse2 main_~hi~0) (<= main_~hi~0 main_~lo~0) (<= main_~hi~0 .cse2) (<= main_~lo~0 main_~hi~0)))) [2019-10-14 23:15:34,941 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2019-10-14 23:15:34,941 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-10-14 23:15:34,941 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-10-14 23:15:34,942 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:15:34,942 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-10-14 23:15:34,942 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-10-14 23:15:34,942 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-10-14 23:15:34,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:15:34 BoogieIcfgContainer [2019-10-14 23:15:34,957 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:15:34,960 INFO L168 Benchmark]: Toolchain (without parser) took 3147.33 ms. Allocated memory was 145.8 MB in the beginning and 234.4 MB in the end (delta: 88.6 MB). Free memory was 104.0 MB in the beginning and 136.8 MB in the end (delta: -32.8 MB). Peak memory consumption was 55.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:34,961 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:15:34,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.10 ms. Allocated memory is still 145.8 MB. Free memory was 103.8 MB in the beginning and 94.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:34,963 INFO L168 Benchmark]: Boogie Preprocessor took 120.50 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 94.4 MB in the beginning and 181.2 MB in the end (delta: -86.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:34,964 INFO L168 Benchmark]: RCFGBuilder took 218.41 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 170.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:34,965 INFO L168 Benchmark]: TraceAbstraction took 2541.22 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 169.8 MB in the beginning and 136.8 MB in the end (delta: 33.0 MB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:15:34,969 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.10 ms. Allocated memory is still 145.8 MB. Free memory was 103.8 MB in the beginning and 94.6 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.50 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 94.4 MB in the beginning and 181.2 MB in the end (delta: -86.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 218.41 ms. Allocated memory is still 202.4 MB. Free memory was 181.2 MB in the beginning and 170.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2541.22 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 169.8 MB in the beginning and 136.8 MB in the end (delta: 33.0 MB). Peak memory consumption was 65.0 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: 16]: Loop Invariant Derived loop invariant: (2 * mid + lo <= hi && hi <= 2 * mid + lo) && lo <= hi - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 47 SDtfs, 11 SDslu, 101 SDs, 0 SdLazy, 87 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 17 NumberOfFragments, 82 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 119 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 3818 SizeOfPredicates, 6 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 1/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...