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-f4eb214f-m [2019-10-13 19:53:28,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:28,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:28,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:28,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:28,872 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:28,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:28,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:28,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:28,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:28,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:28,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:28,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:28,882 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:28,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:28,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:28,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:28,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:28,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:28,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:28,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:28,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:28,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:28,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:28,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:28,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:28,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:28,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:28,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:53:28,931 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:28,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:28,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:28,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:28,933 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:28,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:28,934 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:28,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:28,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:28,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:28,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:28,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:28,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:28,935 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:28,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:28,936 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:28,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:28,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:28,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:28,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:28,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:28,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:28,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:28,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:28,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:28,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:28,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:28,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:28,940 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 [2019-10-13 19:53:29,242 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:29,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:29,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:29,261 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:29,262 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:29,263 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_seq_init_ground.i [2019-10-13 19:53:29,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17bf5ee1/310323ded7cc4be981c6b95ceb498c47/FLAG760a37599 [2019-10-13 19:53:29,766 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:29,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_seq_init_ground.i [2019-10-13 19:53:29,772 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17bf5ee1/310323ded7cc4be981c6b95ceb498c47/FLAG760a37599 [2019-10-13 19:53:30,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a17bf5ee1/310323ded7cc4be981c6b95ceb498c47 [2019-10-13 19:53:30,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:30,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:30,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:30,193 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:30,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:30,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c0bab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30, skipping insertion in model container [2019-10-13 19:53:30,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,209 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:30,228 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:30,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:30,462 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:30,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:30,510 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:30,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30 WrapperNode [2019-10-13 19:53:30,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:30,511 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:30,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:30,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:30,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... [2019-10-13 19:53:30,626 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:30,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:30,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:30,627 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:30,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:30,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:30,886 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:30,886 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 19:53:30,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:30 BoogieIcfgContainer [2019-10-13 19:53:30,888 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:30,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:30,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:30,892 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:30,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:30" (1/3) ... [2019-10-13 19:53:30,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7726818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:30, skipping insertion in model container [2019-10-13 19:53:30,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:30" (2/3) ... [2019-10-13 19:53:30,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7726818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:30, skipping insertion in model container [2019-10-13 19:53:30,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:30" (3/3) ... [2019-10-13 19:53:30,899 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_seq_init_ground.i [2019-10-13 19:53:30,915 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:30,922 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:30,934 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:30,959 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:30,959 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:30,959 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:30,959 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:30,959 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:30,959 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:30,960 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:30,960 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:30,973 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-10-13 19:53:30,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 19:53:30,979 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:30,979 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:30,982 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:30,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:30,987 INFO L82 PathProgramCache]: Analyzing trace with hash -441053002, now seen corresponding path program 1 times [2019-10-13 19:53:30,994 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:30,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130985610] [2019-10-13 19:53:30,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:30,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:30,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:31,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:31,117 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130985610] [2019-10-13 19:53:31,117 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:31,117 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:31,118 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925561548] [2019-10-13 19:53:31,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:31,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:31,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:31,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:31,142 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-10-13 19:53:31,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:31,166 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-10-13 19:53:31,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:31,168 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2019-10-13 19:53:31,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:31,176 INFO L225 Difference]: With dead ends: 39 [2019-10-13 19:53:31,177 INFO L226 Difference]: Without dead ends: 18 [2019-10-13 19:53:31,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:31,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-13 19:53:31,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-13 19:53:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-13 19:53:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-13 19:53:31,221 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2019-10-13 19:53:31,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:31,221 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-13 19:53:31,221 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-13 19:53:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-13 19:53:31,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:31,223 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:31,223 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:31,224 INFO L82 PathProgramCache]: Analyzing trace with hash 303899570, now seen corresponding path program 1 times [2019-10-13 19:53:31,224 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:31,225 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989338948] [2019-10-13 19:53:31,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:31,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989338948] [2019-10-13 19:53:31,282 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:31,283 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:31,283 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770065215] [2019-10-13 19:53:31,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:31,285 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:31,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:31,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:31,287 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2019-10-13 19:53:31,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:31,302 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2019-10-13 19:53:31,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:31,303 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-10-13 19:53:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:31,304 INFO L225 Difference]: With dead ends: 30 [2019-10-13 19:53:31,304 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 19:53:31,305 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 [2019-10-13 19:53:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 19:53:31,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 19:53:31,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 19:53:31,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-13 19:53:31,311 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 13 [2019-10-13 19:53:31,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:31,312 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-13 19:53:31,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-13 19:53:31,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:53:31,313 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:31,313 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:31,314 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:31,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:31,314 INFO L82 PathProgramCache]: Analyzing trace with hash -1260126610, now seen corresponding path program 1 times [2019-10-13 19:53:31,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:31,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523245175] [2019-10-13 19:53:31,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,316 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:31,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:31,422 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523245175] [2019-10-13 19:53:31,423 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335261552] [2019-10-13 19:53:31,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:31,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:31,525 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:31,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:31,550 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:53:31,602 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1152301998] [2019-10-13 19:53:31,609 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 15 [2019-10-13 19:53:31,644 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:31,644 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:31,704 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:31,706 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. [2019-10-13 19:53:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:31,710 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:31,748 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:31,749 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:31,751 INFO L553 sIntCurrentIteration]: We unified 13 AI predicates to 13 [2019-10-13 19:53:31,752 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:31,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:31,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 6 [2019-10-13 19:53:31,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250561047] [2019-10-13 19:53:31,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:31,755 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:31,755 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:31,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:31,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:31,756 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 2 states. [2019-10-13 19:53:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:31,758 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-13 19:53:31,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:31,759 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-13 19:53:31,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:31,759 INFO L225 Difference]: With dead ends: 19 [2019-10-13 19:53:31,759 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:31,760 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 [2019-10-13 19:53:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:31,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:31,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:31,761 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2019-10-13 19:53:31,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:31,761 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:31,762 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:31,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:31,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:31,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:31,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:32,017 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:32,018 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:32,018 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:32,018 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:32,019 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:32,019 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:32,019 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:32,019 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 3 17) no Hoare annotation was computed. [2019-10-13 19:53:32,020 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 3 17) no Hoare annotation was computed. [2019-10-13 19:53:32,020 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-10-13 19:53:32,020 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: false [2019-10-13 19:53:32,020 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2019-10-13 19:53:32,020 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 3 17) the Hoare annotation is: true [2019-10-13 19:53:32,022 INFO L439 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: false [2019-10-13 19:53:32,023 INFO L443 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-10-13 19:53:32,023 INFO L439 ceAbstractionStarter]: At program point L8-2(lines 8 11) the Hoare annotation is: false [2019-10-13 19:53:32,023 INFO L443 ceAbstractionStarter]: For program point L8-3(lines 8 11) no Hoare annotation was computed. [2019-10-13 19:53:32,023 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:32,024 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:32,024 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:32,026 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:32,026 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:32,026 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:32,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:32 BoogieIcfgContainer [2019-10-13 19:53:32,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:32,038 INFO L168 Benchmark]: Toolchain (without parser) took 1844.18 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 101.0 MB in the beginning and 112.3 MB in the end (delta: -11.4 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,040 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.49 ms. Allocated memory is still 135.8 MB. Free memory was 100.8 MB in the beginning and 90.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,043 INFO L168 Benchmark]: Boogie Preprocessor took 115.12 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 177.8 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,047 INFO L168 Benchmark]: RCFGBuilder took 260.89 ms. Allocated memory is still 199.8 MB. Free memory was 177.8 MB in the beginning and 164.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,050 INFO L168 Benchmark]: TraceAbstraction took 1144.96 ms. Allocated memory is still 199.8 MB. Free memory was 164.0 MB in the beginning and 112.3 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:32,057 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 135.8 MB. Free memory was 119.0 MB in the beginning and 118.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 318.49 ms. Allocated memory is still 135.8 MB. Free memory was 100.8 MB in the beginning and 90.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.12 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 177.8 MB in the end (delta: -87.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 260.89 ms. Allocated memory is still 199.8 MB. Free memory was 177.8 MB in the beginning and 164.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1144.96 ms. Allocated memory is still 199.8 MB. Free memory was 164.0 MB in the beginning and 112.3 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 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, 0.2s 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]: 101, 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...