/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:58,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:58,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:58,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:58,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:58,866 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:58,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:58,877 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:58,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:58,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:58,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:58,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:58,889 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:58,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:58,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:58,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:58,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:58,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:58,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:58,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:58,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:58,905 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:58,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:58,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:58,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 22:26:58,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 22:26:58,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 22:26:58,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 22:26:58,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 22:26:58,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 22:26:58,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 22:26:58,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 22:26:58,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 22:26:58,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 22:26:58,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 22:26:58,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 22:26:58,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 22:26:58,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 22:26:58,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:58,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:58,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:58,918 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 22:26:58,932 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:58,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:58,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:58,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:58,933 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:58,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:58,934 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:58,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:58,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:58,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:58,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:58,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:58,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:58,935 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:58,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:58,936 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:58,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:58,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:58,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:58,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:58,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:58,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:58,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:58,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:58,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:58,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:58,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:58,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:58,938 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-06 22:26:59,221 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:59,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:59,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:59,238 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:59,239 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:59,240 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2019-11-06 22:26:59,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b796894/bd0d008d02f247a0b296d1bb5fd0a8b2/FLAGee0bea9a3 [2019-11-06 22:26:59,783 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:59,784 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_maxInArray_ground.i [2019-11-06 22:26:59,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b796894/bd0d008d02f247a0b296d1bb5fd0a8b2/FLAGee0bea9a3 [2019-11-06 22:27:00,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94b796894/bd0d008d02f247a0b296d1bb5fd0a8b2 [2019-11-06 22:27:00,159 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:27:00,160 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:27:00,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:00,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:27:00,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:27:00,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:00" (1/1) ... [2019-11-06 22:27:00,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aa8ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00, skipping insertion in model container [2019-11-06 22:27:00,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:27:00" (1/1) ... [2019-11-06 22:27:00,175 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:27:00,191 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:27:00,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:00,374 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:27:00,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:27:00,417 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:27:00,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00 WrapperNode [2019-11-06 22:27:00,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:27:00,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:27:00,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:27:00,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:27:00,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00" (1/1) ... [2019-11-06 22:27:00,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00" (1/1) ... [2019-11-06 22:27:00,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00" (1/1) ... [2019-11-06 22:27:00,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00" (1/1) ... [2019-11-06 22:27:00,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00" (1/1) ... [2019-11-06 22:27:00,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00" (1/1) ... [2019-11-06 22:27:00,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00" (1/1) ... [2019-11-06 22:27:00,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:27:00,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:27:00,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:27:00,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:27:00,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:27:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:27:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:27:00,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:27:00,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:27:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:27:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:27:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:27:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:27:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:27:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:27:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:27:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:27:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:27:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:27:00,867 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:27:00,872 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-06 22:27:00,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:00 BoogieIcfgContainer [2019-11-06 22:27:00,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:27:00,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:27:00,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:27:00,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:27:00,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:27:00" (1/3) ... [2019-11-06 22:27:00,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238a99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:00, skipping insertion in model container [2019-11-06 22:27:00,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:27:00" (2/3) ... [2019-11-06 22:27:00,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2238a99d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:27:00, skipping insertion in model container [2019-11-06 22:27:00,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:27:00" (3/3) ... [2019-11-06 22:27:00,895 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_maxInArray_ground.i [2019-11-06 22:27:00,905 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:27:00,912 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:27:00,924 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:27:00,947 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:27:00,947 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:27:00,948 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:27:00,948 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:27:00,948 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:27:00,948 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:27:00,948 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:27:00,948 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:27:00,964 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-06 22:27:00,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:00,969 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:00,970 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:00,972 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:00,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:00,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1241254978, now seen corresponding path program 1 times [2019-11-06 22:27:00,985 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:00,986 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495644530] [2019-11-06 22:27:00,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:01,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:01,113 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495644530] [2019-11-06 22:27:01,114 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:01,114 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:27:01,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493026552] [2019-11-06 22:27:01,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:01,121 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:01,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:27:01,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:01,139 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2019-11-06 22:27:01,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:01,165 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2019-11-06 22:27:01,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:01,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-11-06 22:27:01,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:01,175 INFO L225 Difference]: With dead ends: 48 [2019-11-06 22:27:01,175 INFO L226 Difference]: Without dead ends: 23 [2019-11-06 22:27:01,179 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:27:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-06 22:27:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-06 22:27:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-06 22:27:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2019-11-06 22:27:01,222 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2019-11-06 22:27:01,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:01,223 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2019-11-06 22:27:01,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:01,223 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2019-11-06 22:27:01,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-06 22:27:01,224 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:01,224 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:01,224 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:01,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:01,225 INFO L82 PathProgramCache]: Analyzing trace with hash -159068691, now seen corresponding path program 1 times [2019-11-06 22:27:01,225 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:01,226 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617104309] [2019-11-06 22:27:01,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:01,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:01,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:27:01,307 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617104309] [2019-11-06 22:27:01,307 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:01,308 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:27:01,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580455034] [2019-11-06 22:27:01,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:01,313 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:01,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:27:01,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:01,314 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2019-11-06 22:27:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:01,370 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2019-11-06 22:27:01,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:27:01,371 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-06 22:27:01,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:01,373 INFO L225 Difference]: With dead ends: 40 [2019-11-06 22:27:01,373 INFO L226 Difference]: Without dead ends: 25 [2019-11-06 22:27:01,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:01,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-06 22:27:01,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2019-11-06 22:27:01,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-06 22:27:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2019-11-06 22:27:01,381 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2019-11-06 22:27:01,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:01,382 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2019-11-06 22:27:01,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:27:01,382 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2019-11-06 22:27:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-06 22:27:01,388 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:01,389 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:01,389 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:01,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:01,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1675123339, now seen corresponding path program 1 times [2019-11-06 22:27:01,390 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:01,390 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134817140] [2019-11-06 22:27:01,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:01,484 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134817140] [2019-11-06 22:27:01,488 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:27:01,488 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:27:01,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438200611] [2019-11-06 22:27:01,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:27:01,490 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:01,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:27:01,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:01,492 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 3 states. [2019-11-06 22:27:01,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:01,536 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-11-06 22:27:01,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:27:01,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-06 22:27:01,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:01,538 INFO L225 Difference]: With dead ends: 38 [2019-11-06 22:27:01,538 INFO L226 Difference]: Without dead ends: 27 [2019-11-06 22:27:01,540 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:27:01,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-06 22:27:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-06 22:27:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-06 22:27:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-11-06 22:27:01,553 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2019-11-06 22:27:01,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:01,553 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-11-06 22:27:01,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:27:01,554 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-11-06 22:27:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-06 22:27:01,555 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:27:01,555 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:27:01,556 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:27:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:01,556 INFO L82 PathProgramCache]: Analyzing trace with hash 99818017, now seen corresponding path program 1 times [2019-11-06 22:27:01,557 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:27:01,557 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313625696] [2019-11-06 22:27:01,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:27:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:01,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:01,632 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313625696] [2019-11-06 22:27:01,632 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21855712] [2019-11-06 22:27:01,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:27:01,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:27:01,702 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:27:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:01,741 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:27:01,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:27:01,777 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [28988034] [2019-11-06 22:27:01,784 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 21 [2019-11-06 22:27:01,822 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:27:01,823 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:27:01,891 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:27:01,893 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 22 variables. [2019-11-06 22:27:01,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:27:01,897 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:27:01,934 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:27:01,934 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:27:01,936 INFO L553 sIntCurrentIteration]: We unified 19 AI predicates to 19 [2019-11-06 22:27:01,936 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:27:01,937 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:27:01,937 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:27:01,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241566797] [2019-11-06 22:27:01,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:27:01,939 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:27:01,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:27:01,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:27:01,940 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 2 states. [2019-11-06 22:27:01,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:27:01,942 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2019-11-06 22:27:01,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:27:01,943 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-11-06 22:27:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:27:01,943 INFO L225 Difference]: With dead ends: 25 [2019-11-06 22:27:01,943 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:27:01,944 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:27:01,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:27:01,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:27:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:27:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:27:01,945 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-11-06 22:27:01,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:27:01,946 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:27:01,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:27:01,946 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:27:01,946 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:27:02,150 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:27:02,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:27:02,180 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:02,181 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:02,181 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:02,181 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:27:02,181 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:27:02,181 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:27:02,182 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:27:02,182 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 5 25) no Hoare annotation was computed. [2019-11-06 22:27:02,182 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2019-11-06 22:27:02,182 INFO L439 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: false [2019-11-06 22:27:02,182 INFO L443 ceAbstractionStarter]: For program point L21-4(lines 21 23) no Hoare annotation was computed. [2019-11-06 22:27:02,182 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2019-11-06 22:27:02,183 INFO L443 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2019-11-06 22:27:02,183 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 5 25) no Hoare annotation was computed. [2019-11-06 22:27:02,183 INFO L443 ceAbstractionStarter]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2019-11-06 22:27:02,183 INFO L439 ceAbstractionStarter]: At program point L9-3(lines 9 11) the Hoare annotation is: false [2019-11-06 22:27:02,183 INFO L443 ceAbstractionStarter]: For program point L9-4(lines 9 11) no Hoare annotation was computed. [2019-11-06 22:27:02,184 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 5 25) the Hoare annotation is: true [2019-11-06 22:27:02,185 INFO L439 ceAbstractionStarter]: At program point L22(line 22) the Hoare annotation is: false [2019-11-06 22:27:02,186 INFO L443 ceAbstractionStarter]: For program point L22-1(line 22) no Hoare annotation was computed. [2019-11-06 22:27:02,186 INFO L439 ceAbstractionStarter]: At program point L14-2(lines 14 19) the Hoare annotation is: false [2019-11-06 22:27:02,186 INFO L443 ceAbstractionStarter]: For program point L14-3(lines 14 19) no Hoare annotation was computed. [2019-11-06 22:27:02,186 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:27:02,186 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:27:02,186 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:27:02,187 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:27:02,187 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:27:02,187 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:27:02,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:27:02 BoogieIcfgContainer [2019-11-06 22:27:02,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:27:02,205 INFO L168 Benchmark]: Toolchain (without parser) took 2038.79 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 102.7 MB in the end (delta: -529.8 kB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:02,206 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-06 22:27:02,207 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.02 ms. Allocated memory is still 137.9 MB. Free memory was 101.7 MB in the beginning and 91.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:02,211 INFO L168 Benchmark]: Boogie Preprocessor took 115.74 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 179.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:02,212 INFO L168 Benchmark]: RCFGBuilder took 340.57 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 165.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:02,213 INFO L168 Benchmark]: TraceAbstraction took 1321.68 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 102.7 MB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:27:02,219 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.02 ms. Allocated memory is still 137.9 MB. Free memory was 101.7 MB in the beginning and 91.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 115.74 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 179.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.57 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 165.1 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1321.68 ms. Allocated memory is still 201.9 MB. Free memory was 164.5 MB in the beginning and 102.7 MB in the end (delta: 61.8 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Result: SAFE, OverallTime: 1.2s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 4 SDslu, 43 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 12 NumberOfFragments, 9 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 101 ConstructedInterpolants, 0 QuantifiedInterpolants, 2133 SizeOfPredicates, 1 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 4/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 114, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9473684210526315, AVG_VARS_REMOVED_DURING_WEAKENING: 0.6842105263157895, AVG_WEAKENED_CONJUNCTS: 0.3157894736842105, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...