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_copy6_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:52:07,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:52:07,691 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:52:07,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:52:07,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:52:07,704 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:52:07,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:52:07,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:52:07,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:52:07,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:52:07,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:52:07,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:52:07,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:52:07,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:52:07,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:52:07,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:52:07,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:52:07,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:52:07,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:52:07,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:52:07,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:52:07,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:52:07,726 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:52:07,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:52:07,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:52:07,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:52:07,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:52:07,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:52:07,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:52:07,751 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:52:07,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:52:07,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:52:07,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:52:07,753 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:52:07,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:52:07,754 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:52:07,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:52:07,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:52:07,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:52:07,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:52:07,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:52:07,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:52:07,755 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:52:07,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:52:07,755 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:52:07,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:52:07,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:52:07,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:52:07,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:52:07,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:52:07,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:07,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:52:07,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:52:07,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:52:07,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:52:07,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:52:07,758 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:52:07,758 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-14 23:52:08,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:52:08,078 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:52:08,082 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:52:08,083 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:52:08,083 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:52:08,084 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2019-10-14 23:52:08,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1899279be/8704651c3e6e4f9596c7b0013efa4fad/FLAGdb3522b32 [2019-10-14 23:52:08,606 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:52:08,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy6_ground-2.i [2019-10-14 23:52:08,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1899279be/8704651c3e6e4f9596c7b0013efa4fad/FLAGdb3522b32 [2019-10-14 23:52:09,005 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1899279be/8704651c3e6e4f9596c7b0013efa4fad [2019-10-14 23:52:09,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:52:09,023 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:52:09,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:09,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:52:09,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:52:09,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a65a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09, skipping insertion in model container [2019-10-14 23:52:09,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,046 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:52:09,067 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:52:09,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:09,320 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:52:09,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:52:09,367 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:52:09,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09 WrapperNode [2019-10-14 23:52:09,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:52:09,368 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:52:09,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:52:09,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:52:09,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,500 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... [2019-10-14 23:52:09,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:52:09,503 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:52:09,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:52:09,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:52:09,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:52:09,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:52:09,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:52:09,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:52:09,559 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:52:09,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:52:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:52:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:52:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:52:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:52:09,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:52:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:52:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:52:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:52:09,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:52:09,927 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:52:09,928 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-14 23:52:09,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:09 BoogieIcfgContainer [2019-10-14 23:52:09,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:52:09,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:52:09,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:52:09,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:52:09,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:52:09" (1/3) ... [2019-10-14 23:52:09,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b09ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:09, skipping insertion in model container [2019-10-14 23:52:09,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:52:09" (2/3) ... [2019-10-14 23:52:09,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b09ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:52:09, skipping insertion in model container [2019-10-14 23:52:09,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:52:09" (3/3) ... [2019-10-14 23:52:09,939 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy6_ground-2.i [2019-10-14 23:52:09,957 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:52:09,976 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:52:09,993 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:52:10,018 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:52:10,019 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:52:10,019 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:52:10,019 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:52:10,019 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:52:10,019 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:52:10,019 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:52:10,020 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:52:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2019-10-14 23:52:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:52:10,048 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:10,049 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:10,050 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:10,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:10,058 INFO L82 PathProgramCache]: Analyzing trace with hash 772526198, now seen corresponding path program 1 times [2019-10-14 23:52:10,067 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:10,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533612298] [2019-10-14 23:52:10,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:10,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533612298] [2019-10-14 23:52:10,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:10,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:52:10,237 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882478193] [2019-10-14 23:52:10,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:10,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:10,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:10,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:10,267 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2019-10-14 23:52:10,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:10,295 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2019-10-14 23:52:10,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:10,297 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2019-10-14 23:52:10,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:10,305 INFO L225 Difference]: With dead ends: 76 [2019-10-14 23:52:10,305 INFO L226 Difference]: Without dead ends: 37 [2019-10-14 23:52:10,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:10,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-14 23:52:10,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2019-10-14 23:52:10,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-14 23:52:10,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2019-10-14 23:52:10,356 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 25 [2019-10-14 23:52:10,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:10,357 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2019-10-14 23:52:10,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2019-10-14 23:52:10,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:52:10,359 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:10,359 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:10,360 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:10,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:10,360 INFO L82 PathProgramCache]: Analyzing trace with hash 514335338, now seen corresponding path program 1 times [2019-10-14 23:52:10,361 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:10,361 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575025507] [2019-10-14 23:52:10,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:52:10,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575025507] [2019-10-14 23:52:10,459 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:10,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:10,460 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562288337] [2019-10-14 23:52:10,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:10,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:10,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:10,463 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 3 states. [2019-10-14 23:52:10,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:10,492 INFO L93 Difference]: Finished difference Result 68 states and 82 transitions. [2019-10-14 23:52:10,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:10,493 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-14 23:52:10,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:10,495 INFO L225 Difference]: With dead ends: 68 [2019-10-14 23:52:10,495 INFO L226 Difference]: Without dead ends: 39 [2019-10-14 23:52:10,496 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:10,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-14 23:52:10,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2019-10-14 23:52:10,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-14 23:52:10,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-10-14 23:52:10,505 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2019-10-14 23:52:10,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:10,505 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-10-14 23:52:10,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:10,506 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-10-14 23:52:10,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-14 23:52:10,507 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:10,507 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:10,507 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:10,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:10,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1148318088, now seen corresponding path program 1 times [2019-10-14 23:52:10,508 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:10,509 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728897444] [2019-10-14 23:52:10,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,509 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:52:10,602 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728897444] [2019-10-14 23:52:10,603 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:52:10,603 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:52:10,603 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792838456] [2019-10-14 23:52:10,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:52:10,604 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:10,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:52:10,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:10,605 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 3 states. [2019-10-14 23:52:10,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:10,705 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2019-10-14 23:52:10,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:52:10,706 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-14 23:52:10,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:10,707 INFO L225 Difference]: With dead ends: 76 [2019-10-14 23:52:10,707 INFO L226 Difference]: Without dead ends: 50 [2019-10-14 23:52:10,708 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:52:10,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-10-14 23:52:10,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2019-10-14 23:52:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-14 23:52:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-10-14 23:52:10,717 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 27 [2019-10-14 23:52:10,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:10,717 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-10-14 23:52:10,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:52:10,717 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-10-14 23:52:10,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-14 23:52:10,719 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:52:10,719 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:52:10,719 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:52:10,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:10,720 INFO L82 PathProgramCache]: Analyzing trace with hash 342802812, now seen corresponding path program 1 times [2019-10-14 23:52:10,720 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:52:10,720 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628777516] [2019-10-14 23:52:10,720 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,720 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:52:10,721 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:52:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,820 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:52:10,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628777516] [2019-10-14 23:52:10,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833063648] [2019-10-14 23:52:10,821 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:52:10,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:52:10,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:52:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:52:10,976 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:52:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:52:11,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [565414265] [2019-10-14 23:52:11,033 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 40 [2019-10-14 23:52:11,074 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:52:11,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:52:11,150 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:52:11,152 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 45 variables. [2019-10-14 23:52:11,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:52:11,157 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:52:11,198 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-14 23:52:11,199 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:52:11,201 INFO L553 sIntCurrentIteration]: We unified 38 AI predicates to 38 [2019-10-14 23:52:11,201 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:52:11,202 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-14 23:52:11,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-14 23:52:11,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560754502] [2019-10-14 23:52:11,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:52:11,203 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:52:11,204 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:52:11,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:52:11,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:11,204 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 2 states. [2019-10-14 23:52:11,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:52:11,207 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2019-10-14 23:52:11,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:52:11,208 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2019-10-14 23:52:11,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:52:11,208 INFO L225 Difference]: With dead ends: 44 [2019-10-14 23:52:11,208 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:52:11,209 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:52:11,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:52:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:52:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:52:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:52:11,210 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-14 23:52:11,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:52:11,211 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:52:11,211 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:52:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:52:11,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:52:11,418 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:52:11,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:52:11,458 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:11,458 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:11,458 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:11,458 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:52:11,459 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:52:11,459 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:52:11,459 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:52:11,459 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 40) no Hoare annotation was computed. [2019-10-14 23:52:11,459 INFO L443 ceAbstractionStarter]: For program point L36-2(lines 36 38) no Hoare annotation was computed. [2019-10-14 23:52:11,459 INFO L439 ceAbstractionStarter]: At program point L36-3(lines 36 38) the Hoare annotation is: false [2019-10-14 23:52:11,460 INFO L443 ceAbstractionStarter]: For program point L36-4(lines 36 38) no Hoare annotation was computed. [2019-10-14 23:52:11,460 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 22) no Hoare annotation was computed. [2019-10-14 23:52:11,460 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 22) the Hoare annotation is: false [2019-10-14 23:52:11,460 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 22) no Hoare annotation was computed. [2019-10-14 23:52:11,460 INFO L439 ceAbstractionStarter]: At program point L37(line 37) the Hoare annotation is: false [2019-10-14 23:52:11,460 INFO L443 ceAbstractionStarter]: For program point L37-1(line 37) no Hoare annotation was computed. [2019-10-14 23:52:11,460 INFO L443 ceAbstractionStarter]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2019-10-14 23:52:11,460 INFO L439 ceAbstractionStarter]: At program point L29-3(lines 29 31) the Hoare annotation is: false [2019-10-14 23:52:11,461 INFO L443 ceAbstractionStarter]: For program point L29-4(lines 29 31) no Hoare annotation was computed. [2019-10-14 23:52:11,461 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 40) no Hoare annotation was computed. [2019-10-14 23:52:11,461 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-10-14 23:52:11,461 INFO L439 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: false [2019-10-14 23:52:11,461 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2019-10-14 23:52:11,461 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 40) the Hoare annotation is: true [2019-10-14 23:52:11,461 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 25) no Hoare annotation was computed. [2019-10-14 23:52:11,461 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 25) the Hoare annotation is: false [2019-10-14 23:52:11,461 INFO L443 ceAbstractionStarter]: For program point L23-4(lines 23 25) no Hoare annotation was computed. [2019-10-14 23:52:11,461 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2019-10-14 23:52:11,462 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: false [2019-10-14 23:52:11,462 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 34) no Hoare annotation was computed. [2019-10-14 23:52:11,462 INFO L443 ceAbstractionStarter]: For program point L17-2(lines 17 19) no Hoare annotation was computed. [2019-10-14 23:52:11,462 INFO L439 ceAbstractionStarter]: At program point L17-3(lines 17 19) the Hoare annotation is: false [2019-10-14 23:52:11,462 INFO L443 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2019-10-14 23:52:11,462 INFO L443 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed. [2019-10-14 23:52:11,462 INFO L439 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: false [2019-10-14 23:52:11,462 INFO L443 ceAbstractionStarter]: For program point L26-4(lines 26 28) no Hoare annotation was computed. [2019-10-14 23:52:11,463 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,463 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,463 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,463 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true [2019-10-14 23:52:11,463 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,463 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed. [2019-10-14 23:52:11,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:52:11 BoogieIcfgContainer [2019-10-14 23:52:11,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:52:11,475 INFO L168 Benchmark]: Toolchain (without parser) took 2451.25 ms. Allocated memory was 137.4 MB in the beginning and 232.3 MB in the end (delta: 94.9 MB). Free memory was 100.8 MB in the beginning and 185.9 MB in the end (delta: -85.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,476 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.4 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-14 23:52:11,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.59 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 90.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,478 INFO L168 Benchmark]: Boogie Preprocessor took 135.03 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 90.0 MB in the beginning and 177.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,479 INFO L168 Benchmark]: RCFGBuilder took 426.11 ms. Allocated memory is still 200.3 MB. Free memory was 177.8 MB in the beginning and 157.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,480 INFO L168 Benchmark]: TraceAbstraction took 1542.32 ms. Allocated memory was 200.3 MB in the beginning and 232.3 MB in the end (delta: 32.0 MB). Free memory was 156.6 MB in the beginning and 185.9 MB in the end (delta: -29.3 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:52:11,484 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 137.4 MB. Free memory is still 119.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 343.59 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 90.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.03 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 90.0 MB in the beginning and 177.8 MB in the end (delta: -87.7 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 426.11 ms. Allocated memory is still 200.3 MB. Free memory was 177.8 MB in the beginning and 157.5 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1542.32 ms. Allocated memory was 200.3 MB in the beginning and 232.3 MB in the end (delta: 32.0 MB). Free memory was 156.6 MB in the beginning and 185.9 MB in the end (delta: -29.3 MB). Peak memory consumption was 2.7 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: 20]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 42 locations, 1 error locations. Result: SAFE, OverallTime: 1.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 7 SDslu, 60 SDs, 0 SdLazy, 35 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 14 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 188 ConstructedInterpolants, 0 QuantifiedInterpolants, 6944 SizeOfPredicates, 1 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 19/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 124, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9013157894736842, AVG_VARS_REMOVED_DURING_WEAKENING: 1.0789473684210527, AVG_WEAKENED_CONJUNCTS: 0.15789473684210525, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...