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_copy7_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:08,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:08,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:08,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:08,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:08,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:08,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:08,066 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:08,071 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:08,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:08,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:08,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:08,078 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:08,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:08,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:08,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:08,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:08,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:08,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:08,093 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:08,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:08,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:08,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:08,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:08,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:08,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:52:08,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:52:08,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:52:08,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:52:08,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:52:08,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:52:08,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:52:08,114 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:52:08,114 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:08,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:08,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:08,119 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 [2019-10-14 23:52:08,153 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:08,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:08,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:08,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:08,155 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:08,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:08,156 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:08,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:08,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:08,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:08,157 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:08,157 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:08,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:08,157 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:08,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:08,158 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:08,158 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:08,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:08,158 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:08,158 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:08,159 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:08,159 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:08,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:08,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:08,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:08,160 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:08,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:08,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:08,160 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 [2019-10-14 23:52:08,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:08,458 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:08,462 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:08,463 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:08,464 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:08,465 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy7_ground-2.i [2019-10-14 23:52:08,542 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f10b21d/da9572ffb98145d7ad9081886df74024/FLAG6b3b82efb [2019-10-14 23:52:09,033 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:09,033 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy7_ground-2.i [2019-10-14 23:52:09,039 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f10b21d/da9572ffb98145d7ad9081886df74024/FLAG6b3b82efb [2019-10-14 23:52:09,469 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70f10b21d/da9572ffb98145d7ad9081886df74024 [2019-10-14 23:52:09,481 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:09,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:09,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:09,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:09,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:09,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af7ade4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09, skipping insertion in model container [2019-10-14 23:52:09,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,503 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:09,522 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:09,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:09,795 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:09,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:09,971 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:09,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09 WrapperNode [2019-10-14 23:52:09,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:09,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:09,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:09,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:09,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:10,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:10,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:10,031 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:10,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:10,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:10,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:10,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:10,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:10,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:10,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (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 [2019-10-14 23:52:10,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:10,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:10,100 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:10,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:10,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:10,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:10,554 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:10,554 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-14 23:52:10,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:10 BoogieIcfgContainer [2019-10-14 23:52:10,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:10,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:10,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:10,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:10,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:09" (1/3) ... [2019-10-14 23:52:10,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1220af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:10, skipping insertion in model container [2019-10-14 23:52:10,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (2/3) ... [2019-10-14 23:52:10,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1220af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:10, skipping insertion in model container [2019-10-14 23:52:10,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:10" (3/3) ... [2019-10-14 23:52:10,564 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy7_ground-2.i [2019-10-14 23:52:10,572 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:10,580 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:10,591 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:10,616 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:10,616 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:10,616 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:10,617 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:10,617 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:10,617 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:10,617 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:10,617 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:10,633 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-10-14 23:52:10,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-14 23:52:10,639 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:10,640 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:10,642 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash -2029657296, now seen corresponding path program 1 times [2019-10-14 23:52:10,658 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:10,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150332672] [2019-10-14 23:52:10,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,659 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:10,817 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150332672] [2019-10-14 23:52:10,818 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:10,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:10,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948219967] [2019-10-14 23:52:10,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:10,831 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:10,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:10,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:10,851 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-10-14 23:52:10,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:10,888 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2019-10-14 23:52:10,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:10,890 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-10-14 23:52:10,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:10,898 INFO L225 Difference]: With dead ends: 82 [2019-10-14 23:52:10,898 INFO L226 Difference]: Without dead ends: 40 [2019-10-14 23:52:10,902 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 [2019-10-14 23:52:10,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-14 23:52:10,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-14 23:52:10,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-14 23:52:10,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-10-14 23:52:10,947 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2019-10-14 23:52:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:10,948 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-10-14 23:52:10,948 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:10,948 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-10-14 23:52:10,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-14 23:52:10,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:10,950 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, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:10,950 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:10,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:10,951 INFO L82 PathProgramCache]: Analyzing trace with hash -2073025378, now seen corresponding path program 1 times [2019-10-14 23:52:10,951 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:10,952 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370907633] [2019-10-14 23:52:10,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,952 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:11,045 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370907633] [2019-10-14 23:52:11,045 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:11,045 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:11,045 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882196460] [2019-10-14 23:52:11,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:11,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:11,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:11,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:11,049 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 3 states. [2019-10-14 23:52:11,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:11,073 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2019-10-14 23:52:11,074 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:11,074 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-14 23:52:11,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:11,075 INFO L225 Difference]: With dead ends: 74 [2019-10-14 23:52:11,076 INFO L226 Difference]: Without dead ends: 42 [2019-10-14 23:52:11,077 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 [2019-10-14 23:52:11,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-14 23:52:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-10-14 23:52:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-14 23:52:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2019-10-14 23:52:11,085 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 27 [2019-10-14 23:52:11,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:11,086 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2019-10-14 23:52:11,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2019-10-14 23:52:11,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-14 23:52:11,087 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:11,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:11,088 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:11,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:11,089 INFO L82 PathProgramCache]: Analyzing trace with hash -55785284, now seen corresponding path program 1 times [2019-10-14 23:52:11,089 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:11,089 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455706802] [2019-10-14 23:52:11,089 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:11,090 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:11,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:11,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:11,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455706802] [2019-10-14 23:52:11,146 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:11,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:11,147 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180291696] [2019-10-14 23:52:11,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:11,152 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:11,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:11,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:11,157 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 3 states. [2019-10-14 23:52:11,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:11,278 INFO L93 Difference]: Finished difference Result 84 states and 105 transitions. [2019-10-14 23:52:11,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:11,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-10-14 23:52:11,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:11,280 INFO L225 Difference]: With dead ends: 84 [2019-10-14 23:52:11,280 INFO L226 Difference]: Without dead ends: 55 [2019-10-14 23:52:11,281 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 [2019-10-14 23:52:11,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-14 23:52:11,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2019-10-14 23:52:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-14 23:52:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-10-14 23:52:11,290 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 29 [2019-10-14 23:52:11,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:11,290 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-10-14 23:52:11,290 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:11,290 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-10-14 23:52:11,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 23:52:11,292 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:11,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:11,292 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:11,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:11,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1132383374, now seen corresponding path program 1 times [2019-10-14 23:52:11,293 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:11,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995787412] [2019-10-14 23:52:11,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:11,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:11,294 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:11,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 23:52:11,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995787412] [2019-10-14 23:52:11,458 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817448490] [2019-10-14 23:52:11,458 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 [2019-10-14 23:52:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:11,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:11,552 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 23:52:11,595 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-14 23:52:11,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [385582231] [2019-10-14 23:52:11,666 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 44 [2019-10-14 23:52:11,747 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:11,748 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:11,831 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:11,833 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 49 variables. [2019-10-14 23:52:11,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:11,837 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:11,884 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:11,884 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:11,887 INFO L553 sIntCurrentIteration]: We unified 42 AI predicates to 42 [2019-10-14 23:52:11,887 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:11,888 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:11,888 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-14 23:52:11,888 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730360252] [2019-10-14 23:52:11,889 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:11,889 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:11,890 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:11,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:11,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:11,890 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 2 states. [2019-10-14 23:52:11,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:11,893 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2019-10-14 23:52:11,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:11,894 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 43 [2019-10-14 23:52:11,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:11,894 INFO L225 Difference]: With dead ends: 48 [2019-10-14 23:52:11,894 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:11,895 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:11,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:11,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:11,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:11,896 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2019-10-14 23:52:11,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:11,897 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:11,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:11,897 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:11,897 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:12,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:12,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:12,156 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:12,157 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:12,157 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:12,157 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:12,157 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:12,157 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:12,157 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:12,157 INFO L443 ceAbstractionStarter]: For program point L27-2(lines 27 29) no Hoare annotation was computed. [2019-10-14 23:52:12,158 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 44) no Hoare annotation was computed. [2019-10-14 23:52:12,158 INFO L439 ceAbstractionStarter]: At program point L27-3(lines 27 29) the Hoare annotation is: false [2019-10-14 23:52:12,158 INFO L443 ceAbstractionStarter]: For program point L27-4(lines 27 29) no Hoare annotation was computed. [2019-10-14 23:52:12,158 INFO L443 ceAbstractionStarter]: For program point L36-2(lines 36 38) no Hoare annotation was computed. [2019-10-14 23:52:12,158 INFO L439 ceAbstractionStarter]: At program point L36-3(lines 36 38) the Hoare annotation is: false [2019-10-14 23:52:12,158 INFO L443 ceAbstractionStarter]: For program point L36-4(lines 36 38) no Hoare annotation was computed. [2019-10-14 23:52:12,158 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-10-14 23:52:12,159 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: false [2019-10-14 23:52:12,159 INFO L443 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2019-10-14 23:52:12,159 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 44) no Hoare annotation was computed. [2019-10-14 23:52:12,160 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 44) the Hoare annotation is: true [2019-10-14 23:52:12,160 INFO L443 ceAbstractionStarter]: For program point L30-2(lines 30 32) no Hoare annotation was computed. [2019-10-14 23:52:12,160 INFO L439 ceAbstractionStarter]: At program point L30-3(lines 30 32) the Hoare annotation is: false [2019-10-14 23:52:12,161 INFO L443 ceAbstractionStarter]: For program point L30-4(lines 30 32) no Hoare annotation was computed. [2019-10-14 23:52:12,161 INFO L443 ceAbstractionStarter]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2019-10-14 23:52:12,161 INFO L439 ceAbstractionStarter]: At program point L14-3(lines 14 16) the Hoare annotation is: false [2019-10-14 23:52:12,161 INFO L443 ceAbstractionStarter]: For program point L14-4(lines 14 16) no Hoare annotation was computed. [2019-10-14 23:52:12,162 INFO L443 ceAbstractionStarter]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2019-10-14 23:52:12,162 INFO L439 ceAbstractionStarter]: At program point L40-3(lines 40 42) the Hoare annotation is: false [2019-10-14 23:52:12,162 INFO L443 ceAbstractionStarter]: For program point L40-4(lines 40 42) no Hoare annotation was computed. [2019-10-14 23:52:12,162 INFO L443 ceAbstractionStarter]: For program point L24-2(lines 24 26) no Hoare annotation was computed. [2019-10-14 23:52:12,163 INFO L439 ceAbstractionStarter]: At program point L24-3(lines 24 26) the Hoare annotation is: false [2019-10-14 23:52:12,163 INFO L443 ceAbstractionStarter]: For program point L24-4(lines 24 26) no Hoare annotation was computed. [2019-10-14 23:52:12,163 INFO L439 ceAbstractionStarter]: At program point L41(line 41) the Hoare annotation is: false [2019-10-14 23:52:12,163 INFO L443 ceAbstractionStarter]: For program point L41-1(line 41) no Hoare annotation was computed. [2019-10-14 23:52:12,164 INFO L443 ceAbstractionStarter]: For program point L33-2(lines 33 35) no Hoare annotation was computed. [2019-10-14 23:52:12,165 INFO L439 ceAbstractionStarter]: At program point L33-3(lines 33 35) the Hoare annotation is: false [2019-10-14 23:52:12,165 INFO L443 ceAbstractionStarter]: For program point L33-4(lines 33 35) no Hoare annotation was computed. [2019-10-14 23:52:12,165 INFO L443 ceAbstractionStarter]: For program point L18-2(lines 18 20) no Hoare annotation was computed. [2019-10-14 23:52:12,165 INFO L439 ceAbstractionStarter]: At program point L18-3(lines 18 20) the Hoare annotation is: false [2019-10-14 23:52:12,165 INFO L443 ceAbstractionStarter]: For program point L18-4(lines 18 20) no Hoare annotation was computed. [2019-10-14 23:52:12,166 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-14 23:52:12,166 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-14 23:52:12,167 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-14 23:52:12,170 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-14 23:52:12,170 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-14 23:52:12,170 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-14 23:52:12,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:12 BoogieIcfgContainer [2019-10-14 23:52:12,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:12,197 INFO L168 Benchmark]: Toolchain (without parser) took 2709.55 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 102.6 MB in the beginning and 179.1 MB in the end (delta: -76.5 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:12,198 INFO L168 Benchmark]: CDTParser took 1.21 ms. Allocated memory is still 137.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-14 23:52:12,199 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.44 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 181.1 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:12,200 INFO L168 Benchmark]: Boogie Preprocessor took 73.67 ms. Allocated memory is still 201.3 MB. Free memory was 181.1 MB in the beginning and 177.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:12,206 INFO L168 Benchmark]: RCFGBuilder took 509.35 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 155.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:12,207 INFO L168 Benchmark]: TraceAbstraction took 1633.40 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 155.6 MB in the beginning and 179.1 MB in the end (delta: -23.5 MB). Peak memory consumption was 9.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:12,215 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.21 ms. Allocated memory is still 137.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 486.44 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 102.6 MB in the beginning and 181.1 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.67 ms. Allocated memory is still 201.3 MB. Free memory was 181.1 MB in the beginning and 177.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 509.35 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 155.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1633.40 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 155.6 MB in the beginning and 179.1 MB in the end (delta: -23.5 MB). Peak memory consumption was 9.0 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: 30]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 138 SDtfs, 8 SDslu, 64 SDs, 0 SdLazy, 40 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=3, 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, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 18 PreInvPairs, 18 NumberOfFragments, 15 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 169 NumberOfCodeBlocks, 169 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 206 ConstructedInterpolants, 0 QuantifiedInterpolants, 8292 SizeOfPredicates, 1 NumberOfNonLiveVariables, 151 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 22/25 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 172, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.8988095238095238, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0952380952380953, AVG_WEAKENED_CONJUNCTS: 0.14285714285714285, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...