/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_copy5_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 22:26:31,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 22:26:31,837 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 22:26:31,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 22:26:31,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 22:26:31,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 22:26:31,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 22:26:31,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 22:26:31,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 22:26:31,857 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 22:26:31,858 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 22:26:31,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 22:26:31,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 22:26:31,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 22:26:31,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 22:26:31,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 22:26:31,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 22:26:31,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 22:26:31,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 22:26:31,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 22:26:31,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 22:26:31,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 22:26:31,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 22:26:31,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 22:26:31,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-06 22:26:31,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 22:26:31,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 22:26:31,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 22:26:31,887 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 22:26:31,901 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 22:26:31,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 22:26:31,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 22:26:31,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 22:26:31,903 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 22:26:31,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 22:26:31,903 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 22:26:31,904 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 22:26:31,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 22:26:31,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 22:26:31,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 22:26:31,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 22:26:31,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 22:26:31,905 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 22:26:31,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 22:26:31,905 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 22:26:31,905 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 22:26:31,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 22:26:31,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 22:26:31,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 22:26:31,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 22:26:31,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:31,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 22:26:31,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 22:26:31,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 22:26:31,907 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 22:26:31,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 22:26:31,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 22:26:31,908 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 22:26:32,177 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 22:26:32,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 22:26:32,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 22:26:32,193 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 22:26:32,194 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 22:26:32,195 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy5_ground-1.i [2019-11-06 22:26:32,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae76912f/872435dcf94f48748a5791c59a8b41f5/FLAG0dfb07782 [2019-11-06 22:26:32,718 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 22:26:32,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy5_ground-1.i [2019-11-06 22:26:32,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae76912f/872435dcf94f48748a5791c59a8b41f5/FLAG0dfb07782 [2019-11-06 22:26:33,073 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ae76912f/872435dcf94f48748a5791c59a8b41f5 [2019-11-06 22:26:33,082 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 22:26:33,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 22:26:33,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:33,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 22:26:33,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 22:26:33,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:33" (1/1) ... [2019-11-06 22:26:33,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@641f40a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33, skipping insertion in model container [2019-11-06 22:26:33,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:33" (1/1) ... [2019-11-06 22:26:33,101 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 22:26:33,126 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 22:26:33,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:33,398 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 22:26:33,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 22:26:33,448 INFO L192 MainTranslator]: Completed translation [2019-11-06 22:26:33,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33 WrapperNode [2019-11-06 22:26:33,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 22:26:33,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 22:26:33,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 22:26:33,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 22:26:33,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33" (1/1) ... [2019-11-06 22:26:33,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33" (1/1) ... [2019-11-06 22:26:33,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33" (1/1) ... [2019-11-06 22:26:33,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33" (1/1) ... [2019-11-06 22:26:33,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33" (1/1) ... [2019-11-06 22:26:33,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33" (1/1) ... [2019-11-06 22:26:33,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33" (1/1) ... [2019-11-06 22:26:33,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 22:26:33,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 22:26:33,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 22:26:33,607 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 22:26:33,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 22:26:33,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 22:26:33,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 22:26:33,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-06 22:26:33,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 22:26:33,664 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 22:26:33,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-06 22:26:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 22:26:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 22:26:33,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 22:26:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 22:26:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 22:26:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 22:26:33,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 22:26:33,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 22:26:34,044 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 22:26:34,045 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-06 22:26:34,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:34 BoogieIcfgContainer [2019-11-06 22:26:34,046 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 22:26:34,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 22:26:34,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 22:26:34,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 22:26:34,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:33" (1/3) ... [2019-11-06 22:26:34,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f98daa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:34, skipping insertion in model container [2019-11-06 22:26:34,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:33" (2/3) ... [2019-11-06 22:26:34,052 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f98daa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:34, skipping insertion in model container [2019-11-06 22:26:34,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:34" (3/3) ... [2019-11-06 22:26:34,054 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy5_ground-1.i [2019-11-06 22:26:34,064 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 22:26:34,070 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 22:26:34,081 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 22:26:34,106 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 22:26:34,106 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 22:26:34,106 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 22:26:34,107 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 22:26:34,107 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 22:26:34,107 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 22:26:34,107 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 22:26:34,107 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 22:26:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-06 22:26:34,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-06 22:26:34,133 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:34,134 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:34,136 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:34,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:34,142 INFO L82 PathProgramCache]: Analyzing trace with hash -2095174276, now seen corresponding path program 1 times [2019-11-06 22:26:34,149 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:34,150 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042886241] [2019-11-06 22:26:34,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:34,292 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042886241] [2019-11-06 22:26:34,293 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:34,293 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-06 22:26:34,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117633771] [2019-11-06 22:26:34,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:34,301 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:34,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-06 22:26:34,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:34,320 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2019-11-06 22:26:34,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:34,349 INFO L93 Difference]: Finished difference Result 70 states and 97 transitions. [2019-11-06 22:26:34,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:34,351 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2019-11-06 22:26:34,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:34,360 INFO L225 Difference]: With dead ends: 70 [2019-11-06 22:26:34,361 INFO L226 Difference]: Without dead ends: 34 [2019-11-06 22:26:34,365 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-06 22:26:34,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-06 22:26:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-11-06 22:26:34,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-06 22:26:34,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2019-11-06 22:26:34,409 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 23 [2019-11-06 22:26:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:34,410 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2019-11-06 22:26:34,410 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:34,411 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2019-11-06 22:26:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-06 22:26:34,412 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:34,412 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:34,412 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:34,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:34,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1625097866, now seen corresponding path program 1 times [2019-11-06 22:26:34,413 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:34,414 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281989109] [2019-11-06 22:26:34,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 22:26:34,505 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281989109] [2019-11-06 22:26:34,506 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:34,506 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:34,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410442775] [2019-11-06 22:26:34,507 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:34,508 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:34,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:34,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:34,509 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 3 states. [2019-11-06 22:26:34,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:34,541 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2019-11-06 22:26:34,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:34,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-11-06 22:26:34,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:34,543 INFO L225 Difference]: With dead ends: 62 [2019-11-06 22:26:34,543 INFO L226 Difference]: Without dead ends: 36 [2019-11-06 22:26:34,544 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:34,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-11-06 22:26:34,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2019-11-06 22:26:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-06 22:26:34,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2019-11-06 22:26:34,552 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 23 [2019-11-06 22:26:34,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:34,553 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2019-11-06 22:26:34,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:34,553 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2019-11-06 22:26:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-06 22:26:34,554 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:34,554 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:34,555 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:34,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:34,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1623092332, now seen corresponding path program 1 times [2019-11-06 22:26:34,555 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:34,556 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569467622] [2019-11-06 22:26:34,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:34,615 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-06 22:26:34,615 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569467622] [2019-11-06 22:26:34,615 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 22:26:34,616 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 22:26:34,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088025851] [2019-11-06 22:26:34,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 22:26:34,617 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:34,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 22:26:34,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:34,618 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 3 states. [2019-11-06 22:26:34,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:34,702 INFO L93 Difference]: Finished difference Result 68 states and 83 transitions. [2019-11-06 22:26:34,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 22:26:34,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-11-06 22:26:34,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:34,704 INFO L225 Difference]: With dead ends: 68 [2019-11-06 22:26:34,704 INFO L226 Difference]: Without dead ends: 45 [2019-11-06 22:26:34,705 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 22:26:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-11-06 22:26:34,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2019-11-06 22:26:34,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-06 22:26:34,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2019-11-06 22:26:34,713 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 25 [2019-11-06 22:26:34,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:34,713 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2019-11-06 22:26:34,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 22:26:34,714 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2019-11-06 22:26:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-06 22:26:34,715 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 22:26:34,715 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 22:26:34,715 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 22:26:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:34,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1928668694, now seen corresponding path program 1 times [2019-11-06 22:26:34,716 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 22:26:34,717 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863315410] [2019-11-06 22:26:34,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 22:26:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 22:26:34,792 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863315410] [2019-11-06 22:26:34,792 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875903470] [2019-11-06 22:26:34,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 22:26:34,901 INFO L256 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 22:26:34,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 22:26:34,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 22:26:34,942 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 22:26:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 22:26:34,982 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1663250258] [2019-11-06 22:26:34,989 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 36 [2019-11-06 22:26:35,027 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-06 22:26:35,028 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-06 22:26:35,091 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-06 22:26:35,092 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 41 variables. [2019-11-06 22:26:35,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 22:26:35,096 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-11-06 22:26:35,150 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-11-06 22:26:35,151 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-11-06 22:26:35,153 INFO L553 sIntCurrentIteration]: We unified 34 AI predicates to 34 [2019-11-06 22:26:35,153 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-11-06 22:26:35,154 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-11-06 22:26:35,154 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-11-06 22:26:35,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839218351] [2019-11-06 22:26:35,155 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-06 22:26:35,155 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 22:26:35,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-06 22:26:35,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-11-06 22:26:35,156 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 2 states. [2019-11-06 22:26:35,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 22:26:35,159 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2019-11-06 22:26:35,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-06 22:26:35,159 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 35 [2019-11-06 22:26:35,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 22:26:35,159 INFO L225 Difference]: With dead ends: 40 [2019-11-06 22:26:35,160 INFO L226 Difference]: Without dead ends: 0 [2019-11-06 22:26:35,160 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 68 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 22:26:35,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-06 22:26:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-06 22:26:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-06 22:26:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-06 22:26:35,161 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2019-11-06 22:26:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 22:26:35,162 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-06 22:26:35,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-06 22:26:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-06 22:26:35,162 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-06 22:26:35,367 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 22:26:35,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-06 22:26:35,402 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:35,402 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:35,402 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:35,402 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-06 22:26:35,402 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-06 22:26:35,403 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-06 22:26:35,403 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-06 22:26:35,403 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 36) no Hoare annotation was computed. [2019-11-06 22:26:35,403 INFO L443 ceAbstractionStarter]: For program point L19-2(lines 19 21) no Hoare annotation was computed. [2019-11-06 22:26:35,403 INFO L439 ceAbstractionStarter]: At program point L19-3(lines 19 21) the Hoare annotation is: false [2019-11-06 22:26:35,403 INFO L443 ceAbstractionStarter]: For program point L19-4(lines 19 21) no Hoare annotation was computed. [2019-11-06 22:26:35,404 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2019-11-06 22:26:35,404 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: false [2019-11-06 22:26:35,404 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 34) no Hoare annotation was computed. [2019-11-06 22:26:35,404 INFO L443 ceAbstractionStarter]: For program point L28-2(lines 28 30) no Hoare annotation was computed. [2019-11-06 22:26:35,404 INFO L439 ceAbstractionStarter]: At program point L28-3(lines 28 30) the Hoare annotation is: false [2019-11-06 22:26:35,404 INFO L443 ceAbstractionStarter]: For program point L28-4(lines 28 30) no Hoare annotation was computed. [2019-11-06 22:26:35,404 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2019-11-06 22:26:35,404 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 18) the Hoare annotation is: false [2019-11-06 22:26:35,405 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2019-11-06 22:26:35,405 INFO L443 ceAbstractionStarter]: For program point L12-2(lines 12 14) no Hoare annotation was computed. [2019-11-06 22:26:35,405 INFO L439 ceAbstractionStarter]: At program point L12-3(lines 12 14) the Hoare annotation is: false [2019-11-06 22:26:35,405 INFO L443 ceAbstractionStarter]: For program point L12-4(lines 12 14) no Hoare annotation was computed. [2019-11-06 22:26:35,405 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: false [2019-11-06 22:26:35,406 INFO L443 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-11-06 22:26:35,406 INFO L443 ceAbstractionStarter]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2019-11-06 22:26:35,406 INFO L439 ceAbstractionStarter]: At program point L25-3(lines 25 27) the Hoare annotation is: false [2019-11-06 22:26:35,406 INFO L443 ceAbstractionStarter]: For program point L25-4(lines 25 27) no Hoare annotation was computed. [2019-11-06 22:26:35,406 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 36) no Hoare annotation was computed. [2019-11-06 22:26:35,406 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 36) the Hoare annotation is: true [2019-11-06 22:26:35,406 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 24) no Hoare annotation was computed. [2019-11-06 22:26:35,407 INFO L439 ceAbstractionStarter]: At program point L22-3(lines 22 24) the Hoare annotation is: false [2019-11-06 22:26:35,407 INFO L443 ceAbstractionStarter]: For program point L22-4(lines 22 24) no Hoare annotation was computed. [2019-11-06 22:26:35,407 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-11-06 22:26:35,407 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-11-06 22:26:35,407 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-11-06 22:26:35,407 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-11-06 22:26:35,408 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-11-06 22:26:35,408 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-11-06 22:26:35,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:35 BoogieIcfgContainer [2019-11-06 22:26:35,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-06 22:26:35,419 INFO L168 Benchmark]: Toolchain (without parser) took 2334.45 ms. Allocated memory was 144.2 MB in the beginning and 233.3 MB in the end (delta: 89.1 MB). Free memory was 101.8 MB in the beginning and 191.1 MB in the end (delta: -89.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:26:35,420 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-11-06 22:26:35,421 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.32 ms. Allocated memory is still 144.2 MB. Free memory was 101.6 MB in the beginning and 91.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:35,422 INFO L168 Benchmark]: Boogie Preprocessor took 156.64 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.3 MB in the beginning and 178.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:35,423 INFO L168 Benchmark]: RCFGBuilder took 440.03 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 159.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2019-11-06 22:26:35,424 INFO L168 Benchmark]: TraceAbstraction took 1369.27 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 159.1 MB in the beginning and 191.1 MB in the end (delta: -32.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-11-06 22:26:35,428 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.32 ms. Allocated memory is still 144.2 MB. Free memory was 101.6 MB in the beginning and 91.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.64 ms. Allocated memory was 144.2 MB in the beginning and 201.9 MB in the end (delta: 57.7 MB). Free memory was 91.3 MB in the beginning and 178.9 MB in the end (delta: -87.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 440.03 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 159.8 MB in the end (delta: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1369.27 ms. Allocated memory was 201.9 MB in the beginning and 233.3 MB in the end (delta: 31.5 MB). Free memory was 159.1 MB in the beginning and 191.1 MB in the end (delta: -32.0 MB). There was no memory consumed. 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: 25]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 39 locations, 1 error locations. Result: SAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 118 SDtfs, 6 SDslu, 56 SDs, 0 SdLazy, 30 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 16 PreInvPairs, 16 NumberOfFragments, 13 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 170 ConstructedInterpolants, 0 QuantifiedInterpolants, 5716 SizeOfPredicates, 1 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 16/19 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 108, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9044117647058824, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0588235294117647, AVG_WEAKENED_CONJUNCTS: 0.17647058823529413, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...