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-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-efa34d5 [2019-09-16 16:12:37,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-16 16:12:37,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-16 16:12:37,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-16 16:12:37,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-16 16:12:37,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-16 16:12:37,668 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-16 16:12:37,669 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-16 16:12:37,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-16 16:12:37,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-16 16:12:37,674 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-16 16:12:37,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-16 16:12:37,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-16 16:12:37,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-16 16:12:37,683 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-16 16:12:37,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-16 16:12:37,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-16 16:12:37,704 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-16 16:12:37,705 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-16 16:12:37,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-16 16:12:37,709 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 [2019-09-16 16:12:37,733 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-16 16:12:37,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-16 16:12:37,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-16 16:12:37,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-16 16:12:37,735 INFO L138 SettingsManager]: * Use SBE=true [2019-09-16 16:12:37,736 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-16 16:12:37,736 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-16 16:12:37,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-16 16:12:37,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-16 16:12:37,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-16 16:12:37,737 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-16 16:12:37,737 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-16 16:12:37,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-16 16:12:37,737 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-16 16:12:37,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-16 16:12:37,738 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-16 16:12:37,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-16 16:12:37,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-16 16:12:37,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-16 16:12:37,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-16 16:12:37,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-16 16:12:37,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-16 16:12:37,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-16 16:12:37,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-16 16:12:37,739 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-16 16:12:37,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-16 16:12:37,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-16 16:12:37,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-16 16:12:37,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-16 16:12:37,793 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-16 16:12:37,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-16 16:12:37,815 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-16 16:12:37,817 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-16 16:12:37,818 INFO L275 PluginConnector]: CDTParser initialized [2019-09-16 16:12:37,818 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2019-09-16 16:12:37,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f2dbbaa/f6a769423b234335a29795bb95c27602/FLAG89eea5978 [2019-09-16 16:12:38,316 INFO L306 CDTParser]: Found 1 translation units. [2019-09-16 16:12:38,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2019-09-16 16:12:38,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f2dbbaa/f6a769423b234335a29795bb95c27602/FLAG89eea5978 [2019-09-16 16:12:38,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48f2dbbaa/f6a769423b234335a29795bb95c27602 [2019-09-16 16:12:38,728 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-16 16:12:38,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-16 16:12:38,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:38,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-16 16:12:38,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-16 16:12:38,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:38" (1/1) ... [2019-09-16 16:12:38,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e198cdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:38, skipping insertion in model container [2019-09-16 16:12:38,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 04:12:38" (1/1) ... [2019-09-16 16:12:38,746 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-16 16:12:38,761 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-16 16:12:38,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:38,988 INFO L188 MainTranslator]: Completed pre-run [2019-09-16 16:12:39,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-16 16:12:39,024 INFO L192 MainTranslator]: Completed translation [2019-09-16 16:12:39,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39 WrapperNode [2019-09-16 16:12:39,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-16 16:12:39,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-16 16:12:39,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-16 16:12:39,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-16 16:12:39,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39" (1/1) ... [2019-09-16 16:12:39,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39" (1/1) ... [2019-09-16 16:12:39,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39" (1/1) ... [2019-09-16 16:12:39,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39" (1/1) ... [2019-09-16 16:12:39,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39" (1/1) ... [2019-09-16 16:12:39,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39" (1/1) ... [2019-09-16 16:12:39,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39" (1/1) ... [2019-09-16 16:12:39,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-16 16:12:39,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-16 16:12:39,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-16 16:12:39,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-16 16:12:39,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39" (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 [2019-09-16 16:12:39,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-16 16:12:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-16 16:12:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-16 16:12:39,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-16 16:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-16 16:12:39,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-16 16:12:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-16 16:12:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-16 16:12:39,227 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-16 16:12:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-16 16:12:39,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-16 16:12:39,370 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-16 16:12:39,371 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-16 16:12:39,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:39 BoogieIcfgContainer [2019-09-16 16:12:39,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-16 16:12:39,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-16 16:12:39,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-16 16:12:39,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-16 16:12:39,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 04:12:38" (1/3) ... [2019-09-16 16:12:39,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704d8add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:39, skipping insertion in model container [2019-09-16 16:12:39,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 04:12:39" (2/3) ... [2019-09-16 16:12:39,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704d8add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 04:12:39, skipping insertion in model container [2019-09-16 16:12:39,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 04:12:39" (3/3) ... [2019-09-16 16:12:39,388 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2019-09-16 16:12:39,399 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-16 16:12:39,407 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-16 16:12:39,422 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-16 16:12:39,450 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-16 16:12:39,451 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-16 16:12:39,451 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-16 16:12:39,451 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-16 16:12:39,451 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-16 16:12:39,451 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-16 16:12:39,452 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-16 16:12:39,452 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-16 16:12:39,452 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-16 16:12:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-09-16 16:12:39,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-16 16:12:39,473 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:39,473 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:39,475 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:39,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:39,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1875203651, now seen corresponding path program 1 times [2019-09-16 16:12:39,481 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:39,481 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:39,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:39,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:39,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:39,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:39,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-16 16:12:39,681 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-16 16:12:39,685 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-16 16:12:39,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-16 16:12:39,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-16 16:12:39,697 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 5 states. [2019-09-16 16:12:39,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:39,815 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2019-09-16 16:12:39,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-16 16:12:39,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-16 16:12:39,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:39,826 INFO L225 Difference]: With dead ends: 40 [2019-09-16 16:12:39,826 INFO L226 Difference]: Without dead ends: 21 [2019-09-16 16:12:39,830 INFO L636 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 [2019-09-16 16:12:39,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-09-16 16:12:39,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2019-09-16 16:12:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-09-16 16:12:39,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-09-16 16:12:39,878 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2019-09-16 16:12:39,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:39,879 INFO L475 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-09-16 16:12:39,879 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-16 16:12:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-09-16 16:12:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-16 16:12:39,880 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:39,881 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:39,881 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:39,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1632080392, now seen corresponding path program 1 times [2019-09-16 16:12:39,882 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:39,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:39,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:39,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:39,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:39,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:39,937 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:39,937 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:39,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:39,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-16 16:12:39,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:40,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:12:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-16 16:12:40,048 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:40,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2019-09-16 16:12:40,050 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-16 16:12:40,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-16 16:12:40,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-16 16:12:40,051 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 8 states. [2019-09-16 16:12:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:40,166 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2019-09-16 16:12:40,169 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-16 16:12:40,169 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2019-09-16 16:12:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:40,170 INFO L225 Difference]: With dead ends: 30 [2019-09-16 16:12:40,170 INFO L226 Difference]: Without dead ends: 28 [2019-09-16 16:12:40,173 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:12:40,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-09-16 16:12:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-09-16 16:12:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-16 16:12:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2019-09-16 16:12:40,188 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2019-09-16 16:12:40,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:40,188 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2019-09-16 16:12:40,188 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-16 16:12:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2019-09-16 16:12:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-09-16 16:12:40,190 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:40,191 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:40,192 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:40,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash 282820957, now seen corresponding path program 2 times [2019-09-16 16:12:40,193 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:40,194 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:40,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:40,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-16 16:12:40,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-16 16:12:40,284 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:40,285 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:40,305 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2019-09-16 16:12:40,318 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-16 16:12:40,319 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:12:40,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-16 16:12:40,323 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:40,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:12:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-16 16:12:40,381 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:40,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2019-09-16 16:12:40,381 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-16 16:12:40,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-16 16:12:40,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-09-16 16:12:40,383 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 9 states. [2019-09-16 16:12:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:40,479 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2019-09-16 16:12:40,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-16 16:12:40,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2019-09-16 16:12:40,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:40,482 INFO L225 Difference]: With dead ends: 37 [2019-09-16 16:12:40,482 INFO L226 Difference]: Without dead ends: 35 [2019-09-16 16:12:40,484 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-09-16 16:12:40,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-16 16:12:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-09-16 16:12:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-16 16:12:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2019-09-16 16:12:40,501 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 24 [2019-09-16 16:12:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:40,502 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2019-09-16 16:12:40,502 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-16 16:12:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2019-09-16 16:12:40,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-09-16 16:12:40,505 INFO L399 BasicCegarLoop]: Found error trace [2019-09-16 16:12:40,505 INFO L407 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-09-16 16:12:40,506 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-16 16:12:40,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-16 16:12:40,506 INFO L82 PathProgramCache]: Analyzing trace with hash 864272984, now seen corresponding path program 3 times [2019-09-16 16:12:40,506 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-16 16:12:40,507 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-16 16:12:40,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:40,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-16 16:12:40,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-16 16:12:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-16 16:12:40,623 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-09-16 16:12:40,624 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-16 16:12:40,624 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-16 16:12:40,649 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-16 16:12:40,661 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-09-16 16:12:40,662 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-16 16:12:40,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-16 16:12:40,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-16 16:12:40,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-16 16:12:40,787 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-16 16:12:40,794 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-16 16:12:40,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 14 [2019-09-16 16:12:40,795 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-16 16:12:40,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-16 16:12:40,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-09-16 16:12:40,796 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 14 states. [2019-09-16 16:12:40,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-16 16:12:40,934 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2019-09-16 16:12:40,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-16 16:12:40,935 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2019-09-16 16:12:40,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-16 16:12:40,935 INFO L225 Difference]: With dead ends: 39 [2019-09-16 16:12:40,935 INFO L226 Difference]: Without dead ends: 0 [2019-09-16 16:12:40,936 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2019-09-16 16:12:40,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-16 16:12:40,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-16 16:12:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-16 16:12:40,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-16 16:12:40,940 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2019-09-16 16:12:40,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-16 16:12:40,940 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-16 16:12:40,940 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-16 16:12:40,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-16 16:12:40,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-16 16:12:40,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-16 16:12:41,032 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-16 16:12:41,032 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:12:41,032 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-16 16:12:41,032 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-16 16:12:41,032 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-16 16:12:41,033 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-16 16:12:41,033 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 10 16) the Hoare annotation is: true [2019-09-16 16:12:41,033 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 10 16) no Hoare annotation was computed. [2019-09-16 16:12:41,033 INFO L439 ceAbstractionStarter]: At program point L13(line 13) the Hoare annotation is: (and (not (= main_~i~0 1000000)) (<= main_~i~0 1000000)) [2019-09-16 16:12:41,033 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 10 16) no Hoare annotation was computed. [2019-09-16 16:12:41,033 INFO L443 ceAbstractionStarter]: For program point L13-1(lines 12 14) no Hoare annotation was computed. [2019-09-16 16:12:41,034 INFO L439 ceAbstractionStarter]: At program point L12-2(lines 12 14) the Hoare annotation is: (<= main_~i~0 1000000) [2019-09-16 16:12:41,034 INFO L443 ceAbstractionStarter]: For program point L12-3(lines 12 14) no Hoare annotation was computed. [2019-09-16 16:12:41,034 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2019-09-16 16:12:41,035 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:12:41,035 INFO L443 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-09-16 16:12:41,035 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-09-16 16:12:41,035 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-09-16 16:12:41,035 INFO L443 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2019-09-16 16:12:41,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 04:12:41 BoogieIcfgContainer [2019-09-16 16:12:41,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-16 16:12:41,055 INFO L168 Benchmark]: Toolchain (without parser) took 2322.64 ms. Allocated memory was 132.6 MB in the beginning and 224.4 MB in the end (delta: 91.8 MB). Free memory was 87.5 MB in the beginning and 163.3 MB in the end (delta: -75.8 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:41,057 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-16 16:12:41,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.35 ms. Allocated memory is still 132.6 MB. Free memory was 87.3 MB in the beginning and 78.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:41,062 INFO L168 Benchmark]: Boogie Preprocessor took 135.55 ms. Allocated memory was 132.6 MB in the beginning and 200.8 MB in the end (delta: 68.2 MB). Free memory was 78.2 MB in the beginning and 177.8 MB in the end (delta: -99.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:41,064 INFO L168 Benchmark]: RCFGBuilder took 210.69 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 166.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:41,065 INFO L168 Benchmark]: TraceAbstraction took 1677.50 ms. Allocated memory was 200.8 MB in the beginning and 224.4 MB in the end (delta: 23.6 MB). Free memory was 166.1 MB in the beginning and 163.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2019-09-16 16:12:41,076 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 105.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.35 ms. Allocated memory is still 132.6 MB. Free memory was 87.3 MB in the beginning and 78.2 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.55 ms. Allocated memory was 132.6 MB in the beginning and 200.8 MB in the end (delta: 68.2 MB). Free memory was 78.2 MB in the beginning and 177.8 MB in the end (delta: -99.5 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 210.69 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 166.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1677.50 ms. Allocated memory was 200.8 MB in the beginning and 224.4 MB in the end (delta: 23.6 MB). Free memory was 166.1 MB in the beginning and 163.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 26.4 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: 12]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 4 OverallIterations, 4 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 41 SDtfs, 38 SDslu, 186 SDs, 0 SdLazy, 170 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 12 PreInvPairs, 23 NumberOfFragments, 16 HoareAnnotationTreeSize, 12 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 27 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 154 NumberOfCodeBlocks, 147 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 6607 SizeOfPredicates, 7 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 69/104 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...