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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/standard_seq_init_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:25,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:25,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:25,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:25,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:25,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:25,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:25,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:25,535 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:25,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:25,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:25,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:25,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:25,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:25,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:25,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:25,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:25,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:25,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:25,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:25,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:25,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:25,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:25,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:25,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:25,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:25,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:25,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:25,570 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 23:52:25,584 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:25,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:25,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:25,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:25,586 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:25,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:25,587 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:25,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:25,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:25,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:25,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:25,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:25,588 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:25,588 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:25,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:25,588 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:25,589 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:25,589 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:25,589 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:25,589 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:25,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:25,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:25,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:25,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:25,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:25,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:25,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:25,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:25,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-14 23:52:25,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:25,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:25,889 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:25,890 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:25,891 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:25,892 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_seq_init_ground.i [2019-10-14 23:52:25,973 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db94e6dd/7dce4cdaa8384a50856d5c4a05b32154/FLAGc26353dcd [2019-10-14 23:52:26,453 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:26,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_seq_init_ground.i [2019-10-14 23:52:26,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db94e6dd/7dce4cdaa8384a50856d5c4a05b32154/FLAGc26353dcd [2019-10-14 23:52:26,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5db94e6dd/7dce4cdaa8384a50856d5c4a05b32154 [2019-10-14 23:52:26,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:26,847 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:26,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:26,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:26,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:26,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@257a8fe9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:26, skipping insertion in model container [2019-10-14 23:52:26,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:26" (1/1) ... [2019-10-14 23:52:26,864 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:26,879 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:27,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:27,092 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:27,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:27,127 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:27,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27 WrapperNode [2019-10-14 23:52:27,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:27,128 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:27,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:27,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:27,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27" (1/1) ... [2019-10-14 23:52:27,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27" (1/1) ... [2019-10-14 23:52:27,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27" (1/1) ... [2019-10-14 23:52:27,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27" (1/1) ... [2019-10-14 23:52:27,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27" (1/1) ... [2019-10-14 23:52:27,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27" (1/1) ... [2019-10-14 23:52:27,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27" (1/1) ... [2019-10-14 23:52:27,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:27,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:27,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:27,253 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:27,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27" (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 23:52:27,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:27,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:27,317 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:27,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:27,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:27,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:27,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:27,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:27,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:27,528 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:27,528 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-14 23:52:27,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:27 BoogieIcfgContainer [2019-10-14 23:52:27,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:27,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:27,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:27,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:27,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:26" (1/3) ... [2019-10-14 23:52:27,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ecfd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:27, skipping insertion in model container [2019-10-14 23:52:27,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:27" (2/3) ... [2019-10-14 23:52:27,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ecfd40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:27, skipping insertion in model container [2019-10-14 23:52:27,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:27" (3/3) ... [2019-10-14 23:52:27,537 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_seq_init_ground.i [2019-10-14 23:52:27,547 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:27,568 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:27,595 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:27,629 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:27,629 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:27,630 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:27,630 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:27,630 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:27,630 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:27,630 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:27,631 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:27,654 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-14 23:52:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:52:27,660 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:27,662 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:27,664 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:27,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:27,670 INFO L82 PathProgramCache]: Analyzing trace with hash -441053002, now seen corresponding path program 1 times [2019-10-14 23:52:27,681 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:27,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301438965] [2019-10-14 23:52:27,682 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,682 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,682 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:27,807 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 23:52:27,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301438965] [2019-10-14 23:52:27,808 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:27,808 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:27,808 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613161637] [2019-10-14 23:52:27,812 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:27,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:27,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:27,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:27,831 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-10-14 23:52:27,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:27,856 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-10-14 23:52:27,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:27,857 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-14 23:52:27,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:27,866 INFO L225 Difference]: With dead ends: 39 [2019-10-14 23:52:27,867 INFO L226 Difference]: Without dead ends: 18 [2019-10-14 23:52:27,870 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:27,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-14 23:52:27,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-14 23:52:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-14 23:52:27,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-14 23:52:27,918 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-10-14 23:52:27,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:27,918 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-14 23:52:27,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:27,919 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-14 23:52:27,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:52:27,919 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:27,920 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:27,920 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:27,921 INFO L82 PathProgramCache]: Analyzing trace with hash 303899570, now seen corresponding path program 1 times [2019-10-14 23:52:27,921 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:27,921 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728280965] [2019-10-14 23:52:27,921 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,922 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:27,922 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:27,977 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 23:52:27,977 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728280965] [2019-10-14 23:52:27,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:27,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:27,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755016413] [2019-10-14 23:52:27,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:27,983 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:27,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:27,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:27,985 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2019-10-14 23:52:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:28,001 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-10-14 23:52:28,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:28,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-14 23:52:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:28,003 INFO L225 Difference]: With dead ends: 30 [2019-10-14 23:52:28,003 INFO L226 Difference]: Without dead ends: 19 [2019-10-14 23:52:28,005 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 23:52:28,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-14 23:52:28,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-14 23:52:28,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-14 23:52:28,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-14 23:52:28,011 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2019-10-14 23:52:28,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:28,012 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-14 23:52:28,012 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:28,012 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-14 23:52:28,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-14 23:52:28,013 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:28,013 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:28,014 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:28,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:28,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1260126610, now seen corresponding path program 1 times [2019-10-14 23:52:28,015 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:28,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690925008] [2019-10-14 23:52:28,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:28,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:28,076 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 23:52:28,076 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690925008] [2019-10-14 23:52:28,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382715827] [2019-10-14 23:52:28,077 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 23:52:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:28,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:28,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:28,175 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 23:52:28,176 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:28,232 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 23:52:28,232 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1699925910] [2019-10-14 23:52:28,239 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 15 [2019-10-14 23:52:28,277 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:28,277 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:28,342 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:28,344 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 19 variables. [2019-10-14 23:52:28,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:28,348 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:28,382 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:28,383 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:28,385 INFO L553 sIntCurrentIteration]: We unified 13 AI predicates to 13 [2019-10-14 23:52:28,385 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:28,386 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:28,386 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 6 [2019-10-14 23:52:28,386 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002135922] [2019-10-14 23:52:28,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:28,388 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:28,388 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:28,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:28,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:28,389 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 2 states. [2019-10-14 23:52:28,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:28,392 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-14 23:52:28,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:28,392 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-14 23:52:28,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:28,392 INFO L225 Difference]: With dead ends: 19 [2019-10-14 23:52:28,392 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:28,393 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 23:52:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:28,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:28,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:28,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:28,394 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-14 23:52:28,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:28,395 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:28,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:28,395 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:28,395 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:28,599 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:28,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:28,631 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:28,632 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:28,632 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:28,632 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:28,632 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:28,632 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:28,632 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:28,633 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 3 17) no Hoare annotation was computed. [2019-10-14 23:52:28,633 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 3 17) no Hoare annotation was computed. [2019-10-14 23:52:28,633 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-10-14 23:52:28,633 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: false [2019-10-14 23:52:28,633 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2019-10-14 23:52:28,633 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 3 17) the Hoare annotation is: true [2019-10-14 23:52:28,634 INFO L439 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: false [2019-10-14 23:52:28,634 INFO L443 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-10-14 23:52:28,634 INFO L439 ceAbstractionStarter]: At program point L8-2(lines 8 11) the Hoare annotation is: false [2019-10-14 23:52:28,634 INFO L443 ceAbstractionStarter]: For program point L8-3(lines 8 11) no Hoare annotation was computed. [2019-10-14 23:52:28,634 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,634 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,634 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-14 23:52:28,635 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,635 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,635 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-14 23:52:28,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:28 BoogieIcfgContainer [2019-10-14 23:52:28,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:28,646 INFO L168 Benchmark]: Toolchain (without parser) took 1798.35 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 113.9 MB in the end (delta: -11.7 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,647 INFO L168 Benchmark]: CDTParser took 1.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.85 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,649 INFO L168 Benchmark]: Boogie Preprocessor took 124.16 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.5 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,650 INFO L168 Benchmark]: RCFGBuilder took 276.66 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 166.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,651 INFO L168 Benchmark]: TraceAbstraction took 1113.03 ms. Allocated memory is still 201.9 MB. Free memory was 165.8 MB in the beginning and 113.9 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:28,655 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.85 ms. Allocated memory is still 138.9 MB. Free memory was 102.0 MB in the beginning and 92.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.16 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 180.5 MB in the end (delta: -88.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 276.66 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 166.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1113.03 ms. Allocated memory is still 201.9 MB. Free memory was 165.8 MB in the beginning and 113.9 MB in the end (delta: 51.8 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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: 8]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 0 SDslu, 16 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 10 PreInvPairs, 10 NumberOfFragments, 8 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 63 ConstructedInterpolants, 0 QuantifiedInterpolants, 975 SizeOfPredicates, 1 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 110, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9423076923076923, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8461538461538461, AVG_WEAKENED_CONJUNCTS: 0.46153846153846156, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...