/usr/bin/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_allDiff2_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:25,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:25,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:25,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:25,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:25,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:25,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:25,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:25,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:25,437 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:25,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:25,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:25,440 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:25,441 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:25,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:25,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:25,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:25,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:25,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:25,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:25,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:25,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:25,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:25,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:25,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:25,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:25,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:25,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:25,479 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 [2019-11-06 22:26:25,500 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:25,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:25,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:25,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:25,503 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:25,503 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:25,504 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:25,504 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:25,504 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:25,504 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:25,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:25,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:25,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:25,506 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:25,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:25,506 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:25,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:25,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:25,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:25,507 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:25,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:25,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:25,508 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:25,508 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:25,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:25,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:25,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:25,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:25,509 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 [2019-11-06 22:26:25,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:25,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:25,820 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:25,822 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:25,822 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:25,823 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_allDiff2_ground.i [2019-11-06 22:26:25,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1a9c661/8e9b446221dd4d5e95713b892c9deccd/FLAGa1d1f9e1a [2019-11-06 22:26:26,329 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:26,330 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_allDiff2_ground.i [2019-11-06 22:26:26,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1a9c661/8e9b446221dd4d5e95713b892c9deccd/FLAGa1d1f9e1a [2019-11-06 22:26:26,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a1a9c661/8e9b446221dd4d5e95713b892c9deccd [2019-11-06 22:26:26,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:26,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:26,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:26,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:26,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:26,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:26" (1/1) ... [2019-11-06 22:26:26,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68de5438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:26, skipping insertion in model container [2019-11-06 22:26:26,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:26" (1/1) ... [2019-11-06 22:26:26,753 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:26,773 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:27,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:27,007 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:27,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:27,051 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:27,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27 WrapperNode [2019-11-06 22:26:27,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:27,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:27,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:27,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:27,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27" (1/1) ... [2019-11-06 22:26:27,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27" (1/1) ... [2019-11-06 22:26:27,163 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27" (1/1) ... [2019-11-06 22:26:27,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27" (1/1) ... [2019-11-06 22:26:27,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27" (1/1) ... [2019-11-06 22:26:27,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27" (1/1) ... [2019-11-06 22:26:27,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27" (1/1) ... [2019-11-06 22:26:27,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:27,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:27,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:27,192 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:27,192 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:27,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:27,241 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:26:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:27,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:27,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:27,494 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:27,495 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-06 22:26:27,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:27 BoogieIcfgContainer [2019-11-06 22:26:27,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:27,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:27,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:27,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:27,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:26" (1/3) ... [2019-11-06 22:26:27,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5077a5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:27, skipping insertion in model container [2019-11-06 22:26:27,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:27" (2/3) ... [2019-11-06 22:26:27,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5077a5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:27, skipping insertion in model container [2019-11-06 22:26:27,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:27" (3/3) ... [2019-11-06 22:26:27,504 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_allDiff2_ground.i [2019-11-06 22:26:27,513 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:27,521 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:27,532 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:27,562 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:27,562 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:27,562 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:27,562 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:27,563 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:27,563 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:27,563 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:27,563 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-11-06 22:26:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:26:27,593 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:27,594 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:27,596 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:27,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:27,604 INFO L82 PathProgramCache]: Analyzing trace with hash -526773211, now seen corresponding path program 1 times [2019-11-06 22:26:27,617 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:27,617 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611256801] [2019-11-06 22:26:27,618 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:27,754 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611256801] [2019-11-06 22:26:27,755 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:27,755 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:27,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482123474] [2019-11-06 22:26:27,760 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:27,762 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:27,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:27,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:27,780 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-11-06 22:26:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:27,806 INFO L93 Difference]: Finished difference Result 56 states and 79 transitions. [2019-11-06 22:26:27,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:27,807 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-11-06 22:26:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:27,814 INFO L225 Difference]: With dead ends: 56 [2019-11-06 22:26:27,814 INFO L226 Difference]: Without dead ends: 27 [2019-11-06 22:26:27,817 INFO L630 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 [2019-11-06 22:26:27,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-06 22:26:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-11-06 22:26:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-06 22:26:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2019-11-06 22:26:27,855 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 16 [2019-11-06 22:26:27,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:27,856 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2019-11-06 22:26:27,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:27,856 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2019-11-06 22:26:27,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-06 22:26:27,857 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:27,858 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:27,858 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:27,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:27,859 INFO L82 PathProgramCache]: Analyzing trace with hash -777624222, now seen corresponding path program 1 times [2019-11-06 22:26:27,859 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:27,859 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13549618] [2019-11-06 22:26:27,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:27,919 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13549618] [2019-11-06 22:26:27,920 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:27,920 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:27,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744252228] [2019-11-06 22:26:27,922 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:27,923 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:27,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:27,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:27,924 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 3 states. [2019-11-06 22:26:27,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:27,968 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2019-11-06 22:26:27,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:27,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-11-06 22:26:27,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:27,970 INFO L225 Difference]: With dead ends: 48 [2019-11-06 22:26:27,970 INFO L226 Difference]: Without dead ends: 29 [2019-11-06 22:26:27,971 INFO L630 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 [2019-11-06 22:26:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-06 22:26:27,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2019-11-06 22:26:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-06 22:26:27,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-06 22:26:27,978 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 16 [2019-11-06 22:26:27,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:27,979 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-06 22:26:27,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:27,979 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-06 22:26:27,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-06 22:26:27,980 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:27,980 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:27,981 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:27,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:27,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2101592964, now seen corresponding path program 1 times [2019-11-06 22:26:27,981 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:27,982 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578591364] [2019-11-06 22:26:27,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:28,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:28,051 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578591364] [2019-11-06 22:26:28,051 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:28,053 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 22:26:28,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245719932] [2019-11-06 22:26:28,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-06 22:26:28,054 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:28,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:28,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-06 22:26:28,055 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 4 states. [2019-11-06 22:26:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:28,119 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2019-11-06 22:26:28,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-06 22:26:28,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-11-06 22:26:28,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:28,121 INFO L225 Difference]: With dead ends: 46 [2019-11-06 22:26:28,121 INFO L226 Difference]: Without dead ends: 33 [2019-11-06 22:26:28,122 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:26:28,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-11-06 22:26:28,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2019-11-06 22:26:28,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-06 22:26:28,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-11-06 22:26:28,129 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 18 [2019-11-06 22:26:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:28,129 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-11-06 22:26:28,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-06 22:26:28,130 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-11-06 22:26:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-06 22:26:28,131 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:28,131 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:28,131 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:28,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:28,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1818591568, now seen corresponding path program 1 times [2019-11-06 22:26:28,132 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:28,132 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291615598] [2019-11-06 22:26:28,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:28,221 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291615598] [2019-11-06 22:26:28,221 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:28,222 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-06 22:26:28,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695610700] [2019-11-06 22:26:28,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 22:26:28,223 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:28,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 22:26:28,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 22:26:28,224 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 5 states. [2019-11-06 22:26:28,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:28,368 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2019-11-06 22:26:28,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 22:26:28,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2019-11-06 22:26:28,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:28,370 INFO L225 Difference]: With dead ends: 62 [2019-11-06 22:26:28,370 INFO L226 Difference]: Without dead ends: 42 [2019-11-06 22:26:28,371 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:28,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-06 22:26:28,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2019-11-06 22:26:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-06 22:26:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2019-11-06 22:26:28,378 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 21 [2019-11-06 22:26:28,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:28,379 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2019-11-06 22:26:28,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 22:26:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2019-11-06 22:26:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-06 22:26:28,380 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:28,380 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:28,381 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:28,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:28,381 INFO L82 PathProgramCache]: Analyzing trace with hash 334453631, now seen corresponding path program 1 times [2019-11-06 22:26:28,382 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:28,382 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480453624] [2019-11-06 22:26:28,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:28,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-06 22:26:28,533 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480453624] [2019-11-06 22:26:28,533 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754422628] [2019-11-06 22:26:28,534 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 [2019-11-06 22:26:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:28,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-06 22:26:28,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:28,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:26:28,701 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:28,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-06 22:26:28,749 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [617216944] [2019-11-06 22:26:28,756 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 27 [2019-11-06 22:26:28,795 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:28,795 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:28,876 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:28,878 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 27 variables. [2019-11-06 22:26:28,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:28,883 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:28,920 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:28,921 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:28,923 INFO L553 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-11-06 22:26:28,923 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:28,924 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:28,924 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7, 5, 5] total 13 [2019-11-06 22:26:28,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051223514] [2019-11-06 22:26:28,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:28,925 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:28,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:28,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:26:28,926 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 2 states. [2019-11-06 22:26:28,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:28,929 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2019-11-06 22:26:28,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:28,929 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2019-11-06 22:26:28,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:28,929 INFO L225 Difference]: With dead ends: 33 [2019-11-06 22:26:28,929 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:28,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-06 22:26:28,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:28,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:28,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:28,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-11-06 22:26:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:28,932 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:28,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:28,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:29,136 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:29,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:29,175 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:29,176 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:29,176 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:29,176 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:29,176 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:29,176 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:29,176 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:29,177 INFO L439 ceAbstractionStarter]: At program point L27(line 27) the Hoare annotation is: false [2019-11-06 22:26:29,177 INFO L443 ceAbstractionStarter]: For program point L27-1(line 27) no Hoare annotation was computed. [2019-11-06 22:26:29,177 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 32) no Hoare annotation was computed. [2019-11-06 22:26:29,177 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 20) no Hoare annotation was computed. [2019-11-06 22:26:29,177 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 20) the Hoare annotation is: false [2019-11-06 22:26:29,177 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 25 29) no Hoare annotation was computed. [2019-11-06 22:26:29,178 INFO L439 ceAbstractionStarter]: At program point L25-3(lines 25 29) the Hoare annotation is: false [2019-11-06 22:26:29,179 INFO L443 ceAbstractionStarter]: For program point L17(lines 17 19) no Hoare annotation was computed. [2019-11-06 22:26:29,179 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 32) no Hoare annotation was computed. [2019-11-06 22:26:29,179 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 5 32) the Hoare annotation is: true [2019-11-06 22:26:29,179 INFO L443 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2019-11-06 22:26:29,179 INFO L439 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: false [2019-11-06 22:26:29,179 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 30) no Hoare annotation was computed. [2019-11-06 22:26:29,180 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 21) no Hoare annotation was computed. [2019-11-06 22:26:29,180 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 21) the Hoare annotation is: false [2019-11-06 22:26:29,180 INFO L443 ceAbstractionStarter]: For program point L14-4(lines 5 32) no Hoare annotation was computed. [2019-11-06 22:26:29,180 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2019-11-06 22:26:29,180 INFO L439 ceAbstractionStarter]: At program point L10-3(lines 10 13) the Hoare annotation is: false [2019-11-06 22:26:29,180 INFO L443 ceAbstractionStarter]: For program point L10-4(lines 10 13) no Hoare annotation was computed. [2019-11-06 22:26:29,181 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:26:29,184 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:26:29,184 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:26:29,184 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:26:29,185 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:26:29,185 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:26:29,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:29 BoogieIcfgContainer [2019-11-06 22:26:29,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:29,206 INFO L168 Benchmark]: Toolchain (without parser) took 2467.19 ms. Allocated memory was 145.8 MB in the beginning and 234.9 MB in the end (delta: 89.1 MB). Free memory was 102.2 MB in the beginning and 177.3 MB in the end (delta: -75.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:29,208 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:26:29,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.04 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:29,213 INFO L168 Benchmark]: Boogie Preprocessor took 134.77 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 91.7 MB in the beginning and 180.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:29,215 INFO L168 Benchmark]: RCFGBuilder took 305.15 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 164.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:29,217 INFO L168 Benchmark]: TraceAbstraction took 1704.12 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 164.0 MB in the beginning and 177.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:29,225 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 145.8 MB. Free memory is still 120.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 315.04 ms. Allocated memory is still 145.8 MB. Free memory was 101.8 MB in the beginning and 91.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.77 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 91.7 MB in the beginning and 180.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 305.15 ms. Allocated memory is still 202.9 MB. Free memory was 180.6 MB in the beginning and 164.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1704.12 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 164.0 MB in the beginning and 177.3 MB in the end (delta: -13.4 MB). Peak memory consumption was 18.6 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: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 32 locations, 1 error locations. Result: SAFE, OverallTime: 1.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 18 SDslu, 128 SDs, 0 SdLazy, 84 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=4, 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, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 15 PreInvPairs, 15 NumberOfFragments, 11 HoareAnnotationTreeSize, 15 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 4822 SizeOfPredicates, 1 NumberOfNonLiveVariables, 94 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 12/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 127, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.96, AVG_VARS_REMOVED_DURING_WEAKENING: 0.88, AVG_WEAKENED_CONJUNCTS: 0.24, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...