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/sorting_selectionsort_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:53:04,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:53:04,664 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:53:04,676 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:53:04,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:53:04,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:53:04,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:53:04,681 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:53:04,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:53:04,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:53:04,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:53:04,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:53:04,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:53:04,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:53:04,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:53:04,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:53:04,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:53:04,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:53:04,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:53:04,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:53:04,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:53:04,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:53:04,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:53:04,697 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:53:04,700 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-13 19:53:04,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:53:04,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:53:04,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:53:04,711 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 19:53:04,724 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:53:04,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:53:04,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:53:04,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:53:04,726 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:53:04,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:53:04,727 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:53:04,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:53:04,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:53:04,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:53:04,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:53:04,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:53:04,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:53:04,728 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:53:04,728 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:53:04,728 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:53:04,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:53:04,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:53:04,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:53:04,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:53:04,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:53:04,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:53:04,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:53:04,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:53:04,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:53:04,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:53:04,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:53:04,731 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:53:04,731 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 19:53:05,015 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:53:05,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:53:05,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:53:05,043 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:53:05,043 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:53:05,044 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i [2019-10-13 19:53:05,113 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0035d8f/d6c2a47bf0fb40b3bf58ff1ce53f98f2/FLAG2b3910d73 [2019-10-13 19:53:05,589 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:53:05,589 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/sorting_selectionsort_ground-1.i [2019-10-13 19:53:05,596 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0035d8f/d6c2a47bf0fb40b3bf58ff1ce53f98f2/FLAG2b3910d73 [2019-10-13 19:53:05,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e0035d8f/d6c2a47bf0fb40b3bf58ff1ce53f98f2 [2019-10-13 19:53:05,984 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:53:05,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:53:05,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:05,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:53:05,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:53:05,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:05" (1/1) ... [2019-10-13 19:53:05,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@208e5f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:05, skipping insertion in model container [2019-10-13 19:53:05,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:05" (1/1) ... [2019-10-13 19:53:06,001 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:53:06,024 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:53:06,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:06,193 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:53:06,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:53:06,318 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:53:06,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06 WrapperNode [2019-10-13 19:53:06,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:53:06,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:53:06,319 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:53:06,319 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:53:06,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06" (1/1) ... [2019-10-13 19:53:06,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06" (1/1) ... [2019-10-13 19:53:06,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06" (1/1) ... [2019-10-13 19:53:06,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06" (1/1) ... [2019-10-13 19:53:06,351 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06" (1/1) ... [2019-10-13 19:53:06,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06" (1/1) ... [2019-10-13 19:53:06,360 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06" (1/1) ... [2019-10-13 19:53:06,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:53:06,363 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:53:06,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:53:06,364 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:53:06,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06" (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 19:53:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:53:06,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:53:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 19:53:06,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:53:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:53:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 19:53:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:53:06,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:53:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:53:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:53:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:53:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:53:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:53:06,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:53:06,699 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:53:06,700 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-13 19:53:06,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:06 BoogieIcfgContainer [2019-10-13 19:53:06,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:53:06,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:53:06,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:53:06,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:53:06,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:05" (1/3) ... [2019-10-13 19:53:06,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc4aef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:06, skipping insertion in model container [2019-10-13 19:53:06,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:06" (2/3) ... [2019-10-13 19:53:06,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cc4aef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:06, skipping insertion in model container [2019-10-13 19:53:06,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:06" (3/3) ... [2019-10-13 19:53:06,724 INFO L109 eAbstractionObserver]: Analyzing ICFG sorting_selectionsort_ground-1.i [2019-10-13 19:53:06,740 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:53:06,749 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:53:06,785 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:53:06,818 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:53:06,818 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:53:06,818 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:53:06,818 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:53:06,819 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:53:06,819 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:53:06,819 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:53:06,819 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:53:06,837 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-10-13 19:53:06,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:53:06,842 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:06,843 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:06,844 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:06,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:06,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1156372912, now seen corresponding path program 1 times [2019-10-13 19:53:06,856 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:06,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181199947] [2019-10-13 19:53:06,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:06,856 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:06,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:06,986 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 19:53:06,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181199947] [2019-10-13 19:53:06,987 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:06,988 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 19:53:06,988 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302323877] [2019-10-13 19:53:06,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:06,993 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:07,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:07,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:07,011 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-10-13 19:53:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:07,039 INFO L93 Difference]: Finished difference Result 82 states and 123 transitions. [2019-10-13 19:53:07,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:07,041 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-13 19:53:07,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:07,049 INFO L225 Difference]: With dead ends: 82 [2019-10-13 19:53:07,049 INFO L226 Difference]: Without dead ends: 40 [2019-10-13 19:53:07,052 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 19:53:07,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-13 19:53:07,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-13 19:53:07,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-13 19:53:07,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2019-10-13 19:53:07,089 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 16 [2019-10-13 19:53:07,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:07,089 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2019-10-13 19:53:07,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:07,090 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2019-10-13 19:53:07,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 19:53:07,091 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:07,091 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:07,092 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:07,092 INFO L82 PathProgramCache]: Analyzing trace with hash -2078459264, now seen corresponding path program 1 times [2019-10-13 19:53:07,093 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:07,093 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554077578] [2019-10-13 19:53:07,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:07,093 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:07,093 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:07,147 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 19:53:07,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554077578] [2019-10-13 19:53:07,148 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:07,148 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:07,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968945234] [2019-10-13 19:53:07,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:07,150 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:07,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:07,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:07,151 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 3 states. [2019-10-13 19:53:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:07,207 INFO L93 Difference]: Finished difference Result 74 states and 96 transitions. [2019-10-13 19:53:07,208 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:07,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-13 19:53:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:07,209 INFO L225 Difference]: With dead ends: 74 [2019-10-13 19:53:07,210 INFO L226 Difference]: Without dead ends: 42 [2019-10-13 19:53:07,211 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 19:53:07,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-13 19:53:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-10-13 19:53:07,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-13 19:53:07,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2019-10-13 19:53:07,223 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 16 [2019-10-13 19:53:07,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:07,224 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-10-13 19:53:07,224 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:07,224 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2019-10-13 19:53:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-13 19:53:07,226 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:07,226 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:07,227 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:07,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:07,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1609541534, now seen corresponding path program 1 times [2019-10-13 19:53:07,228 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:07,228 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027036212] [2019-10-13 19:53:07,228 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:07,229 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:07,229 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:07,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:07,306 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027036212] [2019-10-13 19:53:07,307 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:07,307 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:07,307 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612501724] [2019-10-13 19:53:07,308 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:07,308 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:07,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:07,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:07,309 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 3 states. [2019-10-13 19:53:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:07,381 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2019-10-13 19:53:07,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:07,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-13 19:53:07,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:07,385 INFO L225 Difference]: With dead ends: 72 [2019-10-13 19:53:07,385 INFO L226 Difference]: Without dead ends: 59 [2019-10-13 19:53:07,386 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 19:53:07,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-13 19:53:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2019-10-13 19:53:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-13 19:53:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2019-10-13 19:53:07,397 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 18 [2019-10-13 19:53:07,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:07,397 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2019-10-13 19:53:07,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:07,397 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2019-10-13 19:53:07,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:53:07,398 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:07,399 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:07,399 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:07,399 INFO L82 PathProgramCache]: Analyzing trace with hash -898844059, now seen corresponding path program 1 times [2019-10-13 19:53:07,400 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:07,400 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171727062] [2019-10-13 19:53:07,400 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:07,401 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:07,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:07,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 19:53:07,453 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171727062] [2019-10-13 19:53:07,453 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:53:07,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 19:53:07,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82711856] [2019-10-13 19:53:07,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 19:53:07,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:07,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 19:53:07,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 19:53:07,458 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 3 states. [2019-10-13 19:53:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:07,525 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2019-10-13 19:53:07,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 19:53:07,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-10-13 19:53:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:07,527 INFO L225 Difference]: With dead ends: 90 [2019-10-13 19:53:07,527 INFO L226 Difference]: Without dead ends: 59 [2019-10-13 19:53:07,528 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 19:53:07,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-13 19:53:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2019-10-13 19:53:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-13 19:53:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2019-10-13 19:53:07,536 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 20 [2019-10-13 19:53:07,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:07,536 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2019-10-13 19:53:07,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 19:53:07,536 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2019-10-13 19:53:07,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-13 19:53:07,537 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:53:07,538 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 19:53:07,538 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:53:07,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:07,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1708190685, now seen corresponding path program 1 times [2019-10-13 19:53:07,538 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 19:53:07,539 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991648637] [2019-10-13 19:53:07,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:07,539 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:53:07,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:53:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:07,598 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 19:53:07,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991648637] [2019-10-13 19:53:07,599 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689284750] [2019-10-13 19:53:07,599 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 19:53:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:53:07,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 19:53:07,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 19:53:07,716 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 19:53:07,716 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 19:53:07,781 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 19:53:07,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1961364453] [2019-10-13 19:53:07,790 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 21 [2019-10-13 19:53:07,820 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-13 19:53:07,820 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-13 19:53:07,871 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-13 19:53:07,872 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 24 variables. [2019-10-13 19:53:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:53:07,877 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-13 19:53:07,941 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-13 19:53:07,941 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-13 19:53:07,943 INFO L553 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-10-13 19:53:07,943 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-13 19:53:07,944 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-13 19:53:07,944 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-13 19:53:07,944 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929923019] [2019-10-13 19:53:07,945 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 19:53:07,945 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-13 19:53:07,946 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-13 19:53:07,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 19:53:07,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:07,946 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand 2 states. [2019-10-13 19:53:07,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:53:07,949 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2019-10-13 19:53:07,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 19:53:07,949 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-13 19:53:07,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:53:07,949 INFO L225 Difference]: With dead ends: 46 [2019-10-13 19:53:07,950 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 19:53:07,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 19:53:07,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 19:53:07,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 19:53:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 19:53:07,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 19:53:07,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-10-13 19:53:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:53:07,952 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 19:53:07,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 19:53:07,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 19:53:07,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 19:53:08,153 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 19:53:08,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 19:53:08,198 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:08,199 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:08,199 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:08,199 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 19:53:08,199 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 19:53:08,199 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 19:53:08,200 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 19:53:08,200 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 47) no Hoare annotation was computed. [2019-10-13 19:53:08,200 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2019-10-13 19:53:08,200 INFO L439 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: false [2019-10-13 19:53:08,200 INFO L443 ceAbstractionStarter]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2019-10-13 19:53:08,200 INFO L443 ceAbstractionStarter]: For program point L36-2(lines 36 38) no Hoare annotation was computed. [2019-10-13 19:53:08,200 INFO L439 ceAbstractionStarter]: At program point L36-3(lines 36 38) the Hoare annotation is: false [2019-10-13 19:53:08,201 INFO L443 ceAbstractionStarter]: For program point L36-4(lines 36 38) no Hoare annotation was computed. [2019-10-13 19:53:08,201 INFO L439 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: false [2019-10-13 19:53:08,201 INFO L443 ceAbstractionStarter]: For program point L20-3(lines 17 40) no Hoare annotation was computed. [2019-10-13 19:53:08,201 INFO L439 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: false [2019-10-13 19:53:08,201 INFO L443 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-10-13 19:53:08,201 INFO L443 ceAbstractionStarter]: For program point L21(lines 21 23) no Hoare annotation was computed. [2019-10-13 19:53:08,202 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-10-13 19:53:08,202 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 47) no Hoare annotation was computed. [2019-10-13 19:53:08,202 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 5 47) the Hoare annotation is: true [2019-10-13 19:53:08,202 INFO L443 ceAbstractionStarter]: For program point L31-2(lines 31 35) no Hoare annotation was computed. [2019-10-13 19:53:08,202 INFO L439 ceAbstractionStarter]: At program point L31-3(lines 31 35) the Hoare annotation is: false [2019-10-13 19:53:08,202 INFO L443 ceAbstractionStarter]: For program point L31-4(lines 31 35) no Hoare annotation was computed. [2019-10-13 19:53:08,203 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2019-10-13 19:53:08,203 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: false [2019-10-13 19:53:08,203 INFO L443 ceAbstractionStarter]: For program point L41-2(lines 41 45) no Hoare annotation was computed. [2019-10-13 19:53:08,203 INFO L439 ceAbstractionStarter]: At program point L41-3(lines 41 45) the Hoare annotation is: false [2019-10-13 19:53:08,203 INFO L443 ceAbstractionStarter]: For program point L41-4(lines 41 45) no Hoare annotation was computed. [2019-10-13 19:53:08,203 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: false [2019-10-13 19:53:08,204 INFO L443 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-10-13 19:53:08,204 INFO L439 ceAbstractionStarter]: At program point L17-2(lines 17 40) the Hoare annotation is: false [2019-10-13 19:53:08,204 INFO L443 ceAbstractionStarter]: For program point L17-3(lines 17 40) no Hoare annotation was computed. [2019-10-13 19:53:08,204 INFO L443 ceAbstractionStarter]: For program point L42-2(lines 42 44) no Hoare annotation was computed. [2019-10-13 19:53:08,204 INFO L439 ceAbstractionStarter]: At program point L42-3(lines 42 44) the Hoare annotation is: false [2019-10-13 19:53:08,204 INFO L443 ceAbstractionStarter]: For program point L26-1(lines 26 30) no Hoare annotation was computed. [2019-10-13 19:53:08,204 INFO L439 ceAbstractionStarter]: At program point L43(line 43) the Hoare annotation is: false [2019-10-13 19:53:08,205 INFO L443 ceAbstractionStarter]: For program point L43-1(line 43) no Hoare annotation was computed. [2019-10-13 19:53:08,205 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-13 19:53:08,205 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-13 19:53:08,205 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-13 19:53:08,205 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-13 19:53:08,205 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-13 19:53:08,205 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-13 19:53:08,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:08 BoogieIcfgContainer [2019-10-13 19:53:08,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 19:53:08,222 INFO L168 Benchmark]: Toolchain (without parser) took 2236.33 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 102.5 MB in the beginning and 191.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 7.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:08,223 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-10-13 19:53:08,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.44 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 181.1 MB in the end (delta: -78.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:08,226 INFO L168 Benchmark]: Boogie Preprocessor took 44.00 ms. Allocated memory is still 201.9 MB. Free memory was 181.1 MB in the beginning and 178.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:08,229 INFO L168 Benchmark]: RCFGBuilder took 337.92 ms. Allocated memory is still 201.9 MB. Free memory was 178.7 MB in the beginning and 159.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:08,230 INFO L168 Benchmark]: TraceAbstraction took 1509.68 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 159.9 MB in the beginning and 191.8 MB in the end (delta: -31.9 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-10-13 19:53:08,237 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 332.44 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 181.1 MB in the end (delta: -78.9 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.00 ms. Allocated memory is still 201.9 MB. Free memory was 181.1 MB in the beginning and 178.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.92 ms. Allocated memory is still 201.9 MB. Free memory was 178.7 MB in the beginning and 159.9 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1509.68 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 159.9 MB in the beginning and 191.8 MB in the end (delta: -31.9 MB). Peak memory consumption was 1.1 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: 41]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 200 SDtfs, 42 SDslu, 120 SDs, 0 SdLazy, 44 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 16 LocationsWithAnnotation, 28 PreInvPairs, 28 NumberOfFragments, 16 HoareAnnotationTreeSize, 28 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 16 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 2665 SizeOfPredicates, 1 NumberOfNonLiveVariables, 75 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 2/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 87, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9210526315789473, AVG_VARS_REMOVED_DURING_WEAKENING: 0.9473684210526315, AVG_WEAKENED_CONJUNCTS: 0.3157894736842105, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...