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-industry-pattern/array_shadowinit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:35,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:35,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:35,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:35,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:35,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:35,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:35,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:35,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:35,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:35,494 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:35,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:35,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:35,499 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:35,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:35,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:35,505 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:35,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:35,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:35,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:35,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:35,522 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:35,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:35,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:35,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:35,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:35,541 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:35,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:35,543 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 19:53:35,565 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:35,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:35,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:35,566 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:35,567 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:35,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:35,567 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:35,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:35,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:35,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:35,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:35,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:35,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:35,569 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:35,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:35,569 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:35,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:35,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:35,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:35,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:35,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:35,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:35,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:35,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:35,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:35,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:35,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:35,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:35,572 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 19:53:35,848 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:35,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:35,873 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:35,875 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:35,875 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:35,876 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2019-10-13 19:53:35,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8350fc51/7d62d45286944436a782a8ad81206c6b/FLAGe742b3490 [2019-10-13 19:53:36,434 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:36,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_shadowinit.i [2019-10-13 19:53:36,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8350fc51/7d62d45286944436a782a8ad81206c6b/FLAGe742b3490 [2019-10-13 19:53:36,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8350fc51/7d62d45286944436a782a8ad81206c6b [2019-10-13 19:53:36,869 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:36,871 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:36,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:36,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:36,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:36,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5627da55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:36, skipping insertion in model container [2019-10-13 19:53:36,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:36" (1/1) ... [2019-10-13 19:53:36,888 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:36,904 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:37,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:37,069 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:37,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:37,139 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:37,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37 WrapperNode [2019-10-13 19:53:37,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:37,141 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:37,141 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:37,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:37,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37" (1/1) ... [2019-10-13 19:53:37,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37" (1/1) ... [2019-10-13 19:53:37,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37" (1/1) ... [2019-10-13 19:53:37,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37" (1/1) ... [2019-10-13 19:53:37,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37" (1/1) ... [2019-10-13 19:53:37,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37" (1/1) ... [2019-10-13 19:53:37,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37" (1/1) ... [2019-10-13 19:53:37,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:37,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:37,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:37,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:37,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37" (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 19:53:37,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:37,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:37,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:37,336 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:37,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:37,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:37,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:37,577 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:37,578 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-10-13 19:53:37,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:37 BoogieIcfgContainer [2019-10-13 19:53:37,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:37,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:37,581 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:37,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:37,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:36" (1/3) ... [2019-10-13 19:53:37,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48785c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:37, skipping insertion in model container [2019-10-13 19:53:37,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:37" (2/3) ... [2019-10-13 19:53:37,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48785c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:37, skipping insertion in model container [2019-10-13 19:53:37,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:37" (3/3) ... [2019-10-13 19:53:37,595 INFO L109 eAbstractionObserver]: Analyzing ICFG array_shadowinit.i [2019-10-13 19:53:37,613 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:37,623 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:37,651 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:37,672 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:37,673 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:37,673 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:37,673 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:37,673 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:37,673 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:37,673 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:37,673 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-13 19:53:37,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:53:37,693 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:37,693 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:37,695 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:37,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:37,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1065998934, now seen corresponding path program 1 times [2019-10-13 19:53:37,708 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:37,708 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164899364] [2019-10-13 19:53:37,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,709 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:37,836 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 19:53:37,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164899364] [2019-10-13 19:53:37,837 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:37,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:37,838 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398232110] [2019-10-13 19:53:37,841 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:37,843 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:37,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:37,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:37,860 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-13 19:53:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:37,884 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2019-10-13 19:53:37,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:37,886 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2019-10-13 19:53:37,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:37,894 INFO L225 Difference]: With dead ends: 40 [2019-10-13 19:53:37,894 INFO L226 Difference]: Without dead ends: 18 [2019-10-13 19:53:37,897 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 19:53:37,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-13 19:53:37,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2019-10-13 19:53:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-13 19:53:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-13 19:53:37,930 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 14 [2019-10-13 19:53:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:37,931 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-13 19:53:37,931 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:37,931 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-13 19:53:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-13 19:53:37,932 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:37,932 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:37,932 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:37,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1810951506, now seen corresponding path program 1 times [2019-10-13 19:53:37,933 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:37,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756892505] [2019-10-13 19:53:37,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,934 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:37,934 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:38,020 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 19:53:38,020 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756892505] [2019-10-13 19:53:38,021 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:38,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:38,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042675482] [2019-10-13 19:53:38,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:38,023 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:38,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:38,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:38,024 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2019-10-13 19:53:38,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:38,077 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-10-13 19:53:38,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:38,078 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-13 19:53:38,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:38,079 INFO L225 Difference]: With dead ends: 29 [2019-10-13 19:53:38,079 INFO L226 Difference]: Without dead ends: 19 [2019-10-13 19:53:38,080 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 19:53:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-13 19:53:38,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-13 19:53:38,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-13 19:53:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-10-13 19:53:38,086 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2019-10-13 19:53:38,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:38,087 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-10-13 19:53:38,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-10-13 19:53:38,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-13 19:53:38,088 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:38,088 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:38,088 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:38,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1816633037, now seen corresponding path program 1 times [2019-10-13 19:53:38,089 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:38,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227838341] [2019-10-13 19:53:38,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:38,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:38,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:38,387 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 19:53:38,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227838341] [2019-10-13 19:53:38,392 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124385690] [2019-10-13 19:53:38,392 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 19:53:38,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:38,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 19:53:38,484 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:38,567 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-13 19:53:38,568 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:53:38,575 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:53:38,576 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:53:38,576 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-10-13 19:53:38,607 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-10-13 19:53:38,607 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-13 19:53:38,613 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:53:38,613 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:53:38,614 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:7 [2019-10-13 19:53:38,643 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 19:53:38,644 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:38,720 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-10-13 19:53:38,729 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2019-10-13 19:53:38,731 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2019-10-13 19:53:38,740 INFO L567 ElimStorePlain]: treesize reduction 4, result has 63.6 percent of original size [2019-10-13 19:53:38,740 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:53:38,743 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-13 19:53:38,744 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-13 19:53:38,744 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:14, output treesize:7 [2019-10-13 19:53:38,773 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 19:53:38,774 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [816035605] [2019-10-13 19:53:38,780 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 16 [2019-10-13 19:53:38,816 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:38,816 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:38,904 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:38,906 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 20 variables. [2019-10-13 19:53:38,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:38,910 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:38,962 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-13 19:53:38,962 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:38,968 INFO L553 sIntCurrentIteration]: We unified 14 AI predicates to 14 [2019-10-13 19:53:38,969 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:38,969 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:38,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 8, 8] total 15 [2019-10-13 19:53:38,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200491065] [2019-10-13 19:53:38,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:38,971 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:38,971 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:38,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:38,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:38,972 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 3 states. [2019-10-13 19:53:38,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:38,980 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2019-10-13 19:53:38,980 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:38,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-13 19:53:38,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:38,980 INFO L225 Difference]: With dead ends: 19 [2019-10-13 19:53:38,981 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:38,981 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 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 19:53:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:38,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:38,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:38,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-13 19:53:38,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:38,984 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:38,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:38,984 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:38,984 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:39,189 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:39,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:39,256 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:39,257 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:39,257 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:39,257 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:39,257 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) [2019-10-13 19:53:39,258 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:39,258 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:39,258 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 24) no Hoare annotation was computed. [2019-10-13 19:53:39,258 INFO L439 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-13 19:53:39,258 INFO L443 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-10-13 19:53:39,258 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 24) no Hoare annotation was computed. [2019-10-13 19:53:39,259 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 22) no Hoare annotation was computed. [2019-10-13 19:53:39,259 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 7 22) no Hoare annotation was computed. [2019-10-13 19:53:39,259 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 5 24) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648))) (and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648)))) [2019-10-13 19:53:39,259 INFO L439 ceAbstractionStarter]: At program point L18-2(lines 18 21) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-13 19:53:39,259 INFO L443 ceAbstractionStarter]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2019-10-13 19:53:39,259 INFO L439 ceAbstractionStarter]: At program point L12-2(lines 12 16) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-13 19:53:39,260 INFO L443 ceAbstractionStarter]: For program point L12-3(lines 12 16) no Hoare annotation was computed. [2019-10-13 19:53:39,260 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:39,260 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:39,260 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:39,260 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:39,260 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:39,261 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:39,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:39 BoogieIcfgContainer [2019-10-13 19:53:39,273 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:39,275 INFO L168 Benchmark]: Toolchain (without parser) took 2404.33 ms. Allocated memory was 137.9 MB in the beginning and 234.9 MB in the end (delta: 97.0 MB). Free memory was 101.7 MB in the beginning and 189.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:39,276 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:39,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.07 ms. Allocated memory is still 137.9 MB. Free memory was 101.5 MB in the beginning and 91.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:39,278 INFO L168 Benchmark]: Boogie Preprocessor took 129.83 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.1 MB in the beginning and 180.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:39,279 INFO L168 Benchmark]: RCFGBuilder took 308.70 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 167.3 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:39,280 INFO L168 Benchmark]: TraceAbstraction took 1691.80 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 189.5 MB in the end (delta: -22.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:39,287 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.07 ms. Allocated memory is still 137.9 MB. Free memory was 101.5 MB in the beginning and 91.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.83 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 91.1 MB in the beginning and 180.6 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 308.70 ms. Allocated memory is still 202.4 MB. Free memory was 180.0 MB in the beginning and 167.3 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1691.80 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 166.6 MB in the beginning and 189.5 MB in the end (delta: -22.9 MB). Peak memory consumption was 9.6 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: 12]: Loop Invariant Derived loop invariant: !(\old(N) <= 2147483647) || !(0 <= \old(N) + 2147483648) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: !(\old(N) <= 2147483647) || !(0 <= \old(N) + 2147483648) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 3 SDslu, 12 SDs, 0 SdLazy, 8 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 65 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 58 NumberOfCodeBlocks, 58 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 2992 SizeOfPredicates, 7 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 131, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9404761904761906, AVG_VARS_REMOVED_DURING_WEAKENING: 0.8571428571428571, AVG_WEAKENED_CONJUNCTS: 1.1428571428571428, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...