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/reducercommutativity/max05-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:22:18,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:22:18,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:22:18,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:22:18,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:22:18,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:22:18,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:22:18,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:22:18,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:22:18,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:22:18,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:22:18,868 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:22:18,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:22:18,872 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:22:18,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:22:18,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:22:18,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:22:18,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:22:18,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:22:18,886 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:22:18,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:22:18,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:22:18,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:22:18,898 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:22:18,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:22:18,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:22:18,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:22:18,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:22:18,919 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 [2019-10-15 01:22:18,942 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:22:18,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:22:18,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:22:18,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:22:18,945 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:22:18,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:22:18,946 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:22:18,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:22:18,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:22:18,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:22:18,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:22:18,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:22:18,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:22:18,949 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:22:18,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:22:18,949 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:22:18,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:22:18,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:22:18,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:22:18,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:22:18,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:22:18,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:22:18,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:22:18,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:22:18,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:22:18,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:22:18,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:22:18,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:22:18,952 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 [2019-10-15 01:22:19,263 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:22:19,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:22:19,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:22:19,281 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:22:19,282 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:22:19,282 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/max05-1.i [2019-10-15 01:22:19,345 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac6c3553/46ce5560b3b04fc986a597ecea9b496e/FLAG9f058ef38 [2019-10-15 01:22:19,795 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:22:19,798 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/reducercommutativity/max05-1.i [2019-10-15 01:22:19,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac6c3553/46ce5560b3b04fc986a597ecea9b496e/FLAG9f058ef38 [2019-10-15 01:22:20,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ac6c3553/46ce5560b3b04fc986a597ecea9b496e [2019-10-15 01:22:20,190 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:22:20,192 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:22:20,193 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:22:20,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:22:20,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:22:20,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:22:20" (1/1) ... [2019-10-15 01:22:20,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65599f9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20, skipping insertion in model container [2019-10-15 01:22:20,202 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:22:20" (1/1) ... [2019-10-15 01:22:20,210 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:22:20,231 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:22:20,421 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:22:20,429 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:22:20,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:22:20,461 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:22:20,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20 WrapperNode [2019-10-15 01:22:20,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:22:20,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:22:20,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:22:20,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:22:20,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20" (1/1) ... [2019-10-15 01:22:20,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20" (1/1) ... [2019-10-15 01:22:20,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20" (1/1) ... [2019-10-15 01:22:20,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20" (1/1) ... [2019-10-15 01:22:20,563 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20" (1/1) ... [2019-10-15 01:22:20,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20" (1/1) ... [2019-10-15 01:22:20,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20" (1/1) ... [2019-10-15 01:22:20,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:22:20,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:22:20,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:22:20,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:22:20,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20" (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 [2019-10-15 01:22:20,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:22:20,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:22:20,626 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2019-10-15 01:22:20,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:22:20,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:22:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:22:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure max [2019-10-15 01:22:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:22:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:22:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:22:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:22:20,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:22:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:22:20,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:22:20,993 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:22:20,994 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-15 01:22:20,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:22:20 BoogieIcfgContainer [2019-10-15 01:22:20,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:22:20,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:22:20,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:22:21,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:22:21,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:22:20" (1/3) ... [2019-10-15 01:22:21,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329d7ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:22:21, skipping insertion in model container [2019-10-15 01:22:21,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:22:20" (2/3) ... [2019-10-15 01:22:21,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@329d7ca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:22:21, skipping insertion in model container [2019-10-15 01:22:21,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:22:20" (3/3) ... [2019-10-15 01:22:21,004 INFO L109 eAbstractionObserver]: Analyzing ICFG max05-1.i [2019-10-15 01:22:21,014 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:22:21,021 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:22:21,032 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:22:21,057 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:22:21,058 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:22:21,058 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:22:21,058 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:22:21,058 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:22:21,058 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:22:21,058 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:22:21,058 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:22:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-15 01:22:21,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 01:22:21,081 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:21,082 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:21,084 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:21,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:21,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1379671032, now seen corresponding path program 1 times [2019-10-15 01:22:21,095 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:21,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820232378] [2019-10-15 01:22:21,096 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:21,096 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:21,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:21,278 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 01:22:21,279 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820232378] [2019-10-15 01:22:21,280 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:22:21,280 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:22:21,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953115909] [2019-10-15 01:22:21,285 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:22:21,287 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:21,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:22:21,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:22:21,305 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2019-10-15 01:22:21,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:21,364 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2019-10-15 01:22:21,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:22:21,366 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32 [2019-10-15 01:22:21,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:21,377 INFO L225 Difference]: With dead ends: 60 [2019-10-15 01:22:21,377 INFO L226 Difference]: Without dead ends: 30 [2019-10-15 01:22:21,382 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 [2019-10-15 01:22:21,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-15 01:22:21,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-10-15 01:22:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-15 01:22:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-10-15 01:22:21,435 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 32 [2019-10-15 01:22:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:21,436 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-10-15 01:22:21,436 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:22:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-10-15 01:22:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-15 01:22:21,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:21,440 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:21,440 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:21,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:21,441 INFO L82 PathProgramCache]: Analyzing trace with hash 551744077, now seen corresponding path program 1 times [2019-10-15 01:22:21,441 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:21,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874246904] [2019-10-15 01:22:21,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:21,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:21,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:21,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:21,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:22:21,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874246904] [2019-10-15 01:22:21,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634467290] [2019-10-15 01:22:21,583 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 [2019-10-15 01:22:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:21,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 01:22:21,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:22:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 01:22:21,692 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:22:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 01:22:21,739 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:22:21,739 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2019-10-15 01:22:21,740 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23349954] [2019-10-15 01:22:21,741 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:22:21,742 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:21,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:22:21,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:22:21,743 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 3 states. [2019-10-15 01:22:21,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:21,763 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2019-10-15 01:22:21,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:22:21,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2019-10-15 01:22:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:21,765 INFO L225 Difference]: With dead ends: 52 [2019-10-15 01:22:21,765 INFO L226 Difference]: Without dead ends: 33 [2019-10-15 01:22:21,767 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:22:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-15 01:22:21,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2019-10-15 01:22:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-15 01:22:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-10-15 01:22:21,774 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 34 [2019-10-15 01:22:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:21,774 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-10-15 01:22:21,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:22:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-10-15 01:22:21,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 01:22:21,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:21,776 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:21,980 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:22:21,981 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:21,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash 727331048, now seen corresponding path program 1 times [2019-10-15 01:22:21,982 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:21,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576666084] [2019-10-15 01:22:21,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:21,983 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:21,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:22:22,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576666084] [2019-10-15 01:22:22,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:22:22,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:22:22,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167660393] [2019-10-15 01:22:22,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:22:22,129 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:22,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:22:22,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:22:22,129 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 3 states. [2019-10-15 01:22:22,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:22,154 INFO L93 Difference]: Finished difference Result 47 states and 54 transitions. [2019-10-15 01:22:22,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:22:22,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-15 01:22:22,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:22,157 INFO L225 Difference]: With dead ends: 47 [2019-10-15 01:22:22,158 INFO L226 Difference]: Without dead ends: 32 [2019-10-15 01:22:22,158 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 [2019-10-15 01:22:22,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-15 01:22:22,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-10-15 01:22:22,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-15 01:22:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2019-10-15 01:22:22,176 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 46 [2019-10-15 01:22:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:22,178 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2019-10-15 01:22:22,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:22:22,178 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2019-10-15 01:22:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-15 01:22:22,182 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:22:22,182 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:22:22,183 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:22:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:22,183 INFO L82 PathProgramCache]: Analyzing trace with hash -270429754, now seen corresponding path program 1 times [2019-10-15 01:22:22,184 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:22:22,184 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87921444] [2019-10-15 01:22:22,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:22,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:22:22,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:22:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:22:22,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87921444] [2019-10-15 01:22:22,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136536869] [2019-10-15 01:22:22,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:22:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:22:22,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 01:22:22,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:22:22,482 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:22:22,482 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:22:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-15 01:22:22,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [129523656] [2019-10-15 01:22:22,538 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 49 [2019-10-15 01:22:22,577 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:22:22,578 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:22:22,642 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 01:22:22,644 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 30 variables. [2019-10-15 01:22:22,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:22:22,648 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 01:22:22,699 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-15 01:22:22,699 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 01:22:22,702 INFO L553 sIntCurrentIteration]: We unified 47 AI predicates to 47 [2019-10-15 01:22:22,702 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 01:22:22,703 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:22:22,703 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7 [2019-10-15 01:22:22,703 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691100165] [2019-10-15 01:22:22,704 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:22:22,705 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 01:22:22,705 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 01:22:22,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:22:22,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:22:22,706 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 2 states. [2019-10-15 01:22:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:22:22,708 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2019-10-15 01:22:22,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:22:22,708 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 48 [2019-10-15 01:22:22,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:22:22,709 INFO L225 Difference]: With dead ends: 31 [2019-10-15 01:22:22,709 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:22:22,710 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:22:22,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:22:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:22:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:22:22,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:22:22,711 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2019-10-15 01:22:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:22:22,711 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:22:22,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:22:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:22:22,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:22:22,915 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:22:22,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:22:22,950 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:22:22,950 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:22:22,951 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:22:22,951 INFO L443 ceAbstractionStarter]: For program point maxEXIT(lines 4 13) no Hoare annotation was computed. [2019-10-15 01:22:22,951 INFO L446 ceAbstractionStarter]: At program point maxENTRY(lines 4 13) the Hoare annotation is: true [2019-10-15 01:22:22,951 INFO L443 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-10-15 01:22:22,951 INFO L443 ceAbstractionStarter]: For program point L10-2(line 10) no Hoare annotation was computed. [2019-10-15 01:22:22,951 INFO L443 ceAbstractionStarter]: For program point L9-2(lines 9 11) no Hoare annotation was computed. [2019-10-15 01:22:22,951 INFO L446 ceAbstractionStarter]: At program point L9-3(lines 9 11) the Hoare annotation is: true [2019-10-15 01:22:22,951 INFO L443 ceAbstractionStarter]: For program point L9-4(lines 9 11) no Hoare annotation was computed. [2019-10-15 01:22:22,951 INFO L443 ceAbstractionStarter]: For program point maxFINAL(lines 4 13) no Hoare annotation was computed. [2019-10-15 01:22:22,952 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:22:22,952 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:22:22,952 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:22:22,952 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:22:22,952 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2019-10-15 01:22:22,952 INFO L443 ceAbstractionStarter]: For program point L27(line 27) no Hoare annotation was computed. [2019-10-15 01:22:22,953 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 15 42) no Hoare annotation was computed. [2019-10-15 01:22:22,953 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 25) no Hoare annotation was computed. [2019-10-15 01:22:22,953 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 25) the Hoare annotation is: false [2019-10-15 01:22:22,953 INFO L439 ceAbstractionStarter]: At program point L23-4(lines 23 25) the Hoare annotation is: false [2019-10-15 01:22:22,953 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 15 42) no Hoare annotation was computed. [2019-10-15 01:22:22,953 INFO L443 ceAbstractionStarter]: For program point L38(lines 38 40) no Hoare annotation was computed. [2019-10-15 01:22:22,954 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: false [2019-10-15 01:22:22,954 INFO L443 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2019-10-15 01:22:22,954 INFO L443 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2019-10-15 01:22:22,954 INFO L439 ceAbstractionStarter]: At program point L30(line 30) the Hoare annotation is: false [2019-10-15 01:22:22,954 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2019-10-15 01:22:22,955 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 15 42) the Hoare annotation is: true [2019-10-15 01:22:22,955 INFO L443 ceAbstractionStarter]: For program point L30-1(line 30) no Hoare annotation was computed. [2019-10-15 01:22:22,955 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: false [2019-10-15 01:22:22,955 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 34) no Hoare annotation was computed. [2019-10-15 01:22:22,955 INFO L443 ceAbstractionStarter]: For program point L39(line 39) no Hoare annotation was computed. [2019-10-15 01:22:22,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:22:22 BoogieIcfgContainer [2019-10-15 01:22:22,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:22:22,967 INFO L168 Benchmark]: Toolchain (without parser) took 2775.09 ms. Allocated memory was 138.4 MB in the beginning and 233.8 MB in the end (delta: 95.4 MB). Free memory was 101.8 MB in the beginning and 168.4 MB in the end (delta: -66.6 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:22,968 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory is still 120.0 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 01:22:22,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.73 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 91.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:22,970 INFO L168 Benchmark]: Boogie Preprocessor took 110.00 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 178.4 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:22,971 INFO L168 Benchmark]: RCFGBuilder took 422.66 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 161.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:22,972 INFO L168 Benchmark]: TraceAbstraction took 1967.95 ms. Allocated memory was 200.8 MB in the beginning and 233.8 MB in the end (delta: 33.0 MB). Free memory was 161.5 MB in the beginning and 168.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:22:22,977 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.4 MB. Free memory is still 120.0 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.73 ms. Allocated memory is still 138.4 MB. Free memory was 101.8 MB in the beginning and 91.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.00 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 178.4 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.66 ms. Allocated memory is still 200.8 MB. Free memory was 178.4 MB in the beginning and 161.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1967.95 ms. Allocated memory was 200.8 MB in the beginning and 233.8 MB in the end (delta: 33.0 MB). Free memory was 161.5 MB in the beginning and 168.4 MB in the end (delta: -6.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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: 32]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 6 SDslu, 91 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 27 PreInvPairs, 27 NumberOfFragments, 11 HoareAnnotationTreeSize, 27 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 242 NumberOfCodeBlocks, 242 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 316 ConstructedInterpolants, 0 QuantifiedInterpolants, 14076 SizeOfPredicates, 2 NumberOfNonLiveVariables, 294 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 195/214 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 111, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9627659574468085, AVG_VARS_REMOVED_DURING_WEAKENING: 1.4042553191489362, AVG_WEAKENED_CONJUNCTS: 0.1276595744680851, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...