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_minInArray_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:23,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:23,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:23,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:23,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:23,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:23,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:23,316 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:23,318 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:23,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:23,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:23,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:23,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:23,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:23,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:23,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:23,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:23,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:23,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:23,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:23,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:23,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:23,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:23,338 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:23,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:23,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:23,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:23,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:23,351 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 19:53:23,365 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:23,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:23,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:23,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:23,367 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:23,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:23,367 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:23,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:23,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:23,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:23,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:23,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:23,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:23,369 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:23,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:23,369 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:23,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:23,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:23,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:23,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:23,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:23,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:23,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:23,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:23,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:23,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:23,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:23,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:23,372 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 19:53:23,650 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:23,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:23,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:23,669 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:23,670 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:23,671 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_minInArray_ground-2.i [2019-10-13 19:53:23,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a64fdcce/871b99dd52b646c9a0c18668d12e469c/FLAG202ce6034 [2019-10-13 19:53:24,195 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:24,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_minInArray_ground-2.i [2019-10-13 19:53:24,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a64fdcce/871b99dd52b646c9a0c18668d12e469c/FLAG202ce6034 [2019-10-13 19:53:24,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a64fdcce/871b99dd52b646c9a0c18668d12e469c [2019-10-13 19:53:24,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:24,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:24,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:24,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:24,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:24,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:24,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54268d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24, skipping insertion in model container [2019-10-13 19:53:24,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:24,658 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:24,683 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:24,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:24,916 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:24,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:24,964 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:24,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24 WrapperNode [2019-10-13 19:53:24,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:24,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:24,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:24,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:25,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:25,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:25,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:25,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:25,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:25,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:25,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (1/1) ... [2019-10-13 19:53:25,121 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:25,122 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:25,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:25,122 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:25,123 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (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 19:53:25,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:25,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:25,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:25,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:25,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:25,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:25,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:25,189 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:25,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:25,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:25,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:25,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:25,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:25,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:25,488 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:25,488 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-13 19:53:25,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:25 BoogieIcfgContainer [2019-10-13 19:53:25,492 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:25,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:25,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:25,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:25,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:24" (1/3) ... [2019-10-13 19:53:25,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aea4195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:25, skipping insertion in model container [2019-10-13 19:53:25,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:24" (2/3) ... [2019-10-13 19:53:25,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aea4195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:25, skipping insertion in model container [2019-10-13 19:53:25,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:25" (3/3) ... [2019-10-13 19:53:25,508 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-2.i [2019-10-13 19:53:25,516 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:25,523 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:25,534 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:25,568 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:25,568 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:25,568 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:25,568 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:25,569 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:25,569 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:25,569 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:25,569 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:25,589 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-10-13 19:53:25,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 19:53:25,596 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:25,598 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:25,600 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:25,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:25,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1241254978, now seen corresponding path program 1 times [2019-10-13 19:53:25,612 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:25,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337721221] [2019-10-13 19:53:25,613 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:25,613 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:25,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:25,786 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 19:53:25,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337721221] [2019-10-13 19:53:25,789 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:25,789 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:25,789 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209433900] [2019-10-13 19:53:25,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:25,795 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:25,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:25,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:25,811 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-10-13 19:53:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:25,831 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2019-10-13 19:53:25,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:25,833 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-10-13 19:53:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:25,842 INFO L225 Difference]: With dead ends: 48 [2019-10-13 19:53:25,842 INFO L226 Difference]: Without dead ends: 23 [2019-10-13 19:53:25,846 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 19:53:25,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-13 19:53:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-10-13 19:53:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-13 19:53:25,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-10-13 19:53:25,885 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2019-10-13 19:53:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:25,886 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-10-13 19:53:25,886 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-10-13 19:53:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 19:53:25,887 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:25,887 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:25,888 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:25,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:25,888 INFO L82 PathProgramCache]: Analyzing trace with hash -159068691, now seen corresponding path program 1 times [2019-10-13 19:53:25,889 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:25,889 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232389237] [2019-10-13 19:53:25,889 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:25,890 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:25,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:25,944 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 19:53:25,944 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232389237] [2019-10-13 19:53:25,944 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:25,945 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:25,945 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069277175] [2019-10-13 19:53:25,946 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:25,947 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:25,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:25,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:25,948 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2019-10-13 19:53:25,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:25,996 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2019-10-13 19:53:25,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:25,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-13 19:53:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:25,998 INFO L225 Difference]: With dead ends: 43 [2019-10-13 19:53:25,998 INFO L226 Difference]: Without dead ends: 28 [2019-10-13 19:53:25,999 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 19:53:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-13 19:53:26,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2019-10-13 19:53:26,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-13 19:53:26,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-13 19:53:26,006 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 15 [2019-10-13 19:53:26,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:26,007 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-13 19:53:26,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-13 19:53:26,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:53:26,008 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:26,008 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:26,008 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:26,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:26,009 INFO L82 PathProgramCache]: Analyzing trace with hash 99818017, now seen corresponding path program 1 times [2019-10-13 19:53:26,009 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:26,010 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753184038] [2019-10-13 19:53:26,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:26,010 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:26,010 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:26,090 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753184038] [2019-10-13 19:53:26,091 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75865341] [2019-10-13 19:53:26,091 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 19:53:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:26,148 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:26,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:26,190 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:26,240 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1483728388] [2019-10-13 19:53:26,248 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 21 [2019-10-13 19:53:26,288 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:26,289 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:26,344 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:26,346 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 21 variables. [2019-10-13 19:53:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:26,350 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:26,387 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:26,387 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:26,389 INFO L553 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-10-13 19:53:26,389 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:26,390 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:26,390 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-13 19:53:26,390 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509526126] [2019-10-13 19:53:26,391 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:26,392 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:26,392 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:26,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:26,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:26,393 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 2 states. [2019-10-13 19:53:26,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:26,395 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-10-13 19:53:26,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:26,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-13 19:53:26,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:26,396 INFO L225 Difference]: With dead ends: 25 [2019-10-13 19:53:26,396 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:26,397 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 19:53:26,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:26,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:26,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:26,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:26,398 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-13 19:53:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:26,399 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:26,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:26,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:26,399 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:26,602 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:26,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:26,641 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:26,641 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:26,641 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:26,642 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:26,642 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:26,642 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:26,642 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:26,642 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 27) no Hoare annotation was computed. [2019-10-13 19:53:26,643 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 25) no Hoare annotation was computed. [2019-10-13 19:53:26,643 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 25) the Hoare annotation is: false [2019-10-13 19:53:26,643 INFO L443 ceAbstractionStarter]: For program point L23-4(lines 23 25) no Hoare annotation was computed. [2019-10-13 19:53:26,643 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-10-13 19:53:26,643 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 19) no Hoare annotation was computed. [2019-10-13 19:53:26,643 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 27) no Hoare annotation was computed. [2019-10-13 19:53:26,644 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 5 27) the Hoare annotation is: true [2019-10-13 19:53:26,644 INFO L439 ceAbstractionStarter]: At program point L24(line 24) the Hoare annotation is: false [2019-10-13 19:53:26,644 INFO L443 ceAbstractionStarter]: For program point L24-1(line 24) no Hoare annotation was computed. [2019-10-13 19:53:26,644 INFO L439 ceAbstractionStarter]: At program point L16-2(lines 16 21) the Hoare annotation is: false [2019-10-13 19:53:26,645 INFO L443 ceAbstractionStarter]: For program point L16-3(lines 16 21) no Hoare annotation was computed. [2019-10-13 19:53:26,645 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2019-10-13 19:53:26,645 INFO L439 ceAbstractionStarter]: At program point L10-3(lines 10 13) the Hoare annotation is: false [2019-10-13 19:53:26,645 INFO L443 ceAbstractionStarter]: For program point L10-4(lines 10 13) no Hoare annotation was computed. [2019-10-13 19:53:26,645 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,645 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,646 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:26,646 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,646 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,646 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:26,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:26 BoogieIcfgContainer [2019-10-13 19:53:26,655 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:26,658 INFO L168 Benchmark]: Toolchain (without parser) took 2016.56 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.8 MB in the beginning and 105.9 MB in the end (delta: -3.0 MB). Peak memory consumption was 60.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,659 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.55 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,661 INFO L168 Benchmark]: Boogie Preprocessor took 155.80 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 178.2 MB in the end (delta: -85.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,662 INFO L168 Benchmark]: RCFGBuilder took 370.78 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 163.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,663 INFO L168 Benchmark]: TraceAbstraction took 1156.34 ms. Allocated memory is still 201.3 MB. Free memory was 163.6 MB in the beginning and 105.9 MB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:26,668 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 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.55 ms. Allocated memory is still 137.9 MB. Free memory was 102.6 MB in the beginning and 92.7 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.80 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.7 MB in the beginning and 178.2 MB in the end (delta: -85.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.78 ms. Allocated memory is still 201.3 MB. Free memory was 178.2 MB in the beginning and 163.6 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1156.34 ms. Allocated memory is still 201.3 MB. Free memory was 163.6 MB in the beginning and 105.9 MB in the end (delta: 57.8 MB). Peak memory consumption was 57.8 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: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 4 SDslu, 17 SDs, 0 SdLazy, 12 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 11 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 1845 SizeOfPredicates, 1 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 3/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 103, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9473684210526315, AVG_VARS_REMOVED_DURING_WEAKENING: 0.6842105263157895, AVG_WEAKENED_CONJUNCTS: 0.3157894736842105, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...