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_copy9_ground-2.i
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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 19:53:12,024 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-10-13 19:53:12,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 19:53:12,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 19:53:12,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 19:53:12,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 19:53:12,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 19:53:12,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 19:53:12,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 19:53:12,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 19:53:12,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 19:53:12,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 19:53:12,071 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 19:53:12,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 19:53:12,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 19:53:12,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 19:53:12,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 19:53:12,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 19:53:12,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 19:53:12,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 19:53:12,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 19:53:12,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 19:53:12,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 19:53:12,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 19:53:12,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 19:53:12,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 19:53:12,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 19:53:12,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 19:53:12,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 19:53:12,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 19:53:12,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 19:53:12,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 19:53:12,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2019-10-13 19:53:12,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
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[2019-10-13 19:53:12,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 19:53:12,122 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
[2019-10-13 19:53:12,140 INFO L113 SettingsManager]: Loading preferences was successful
[2019-10-13 19:53:12,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 19:53:12,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 19:53:12,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-10-13 19:53:12,142 INFO L138 SettingsManager]: * Use SBE=true
[2019-10-13 19:53:12,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 19:53:12,143 INFO L138 SettingsManager]: * sizeof long=4
[2019-10-13 19:53:12,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-10-13 19:53:12,143 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-10-13 19:53:12,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-10-13 19:53:12,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 19:53:12,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 19:53:12,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 19:53:12,145 INFO L138 SettingsManager]: * sizeof long double=12
[2019-10-13 19:53:12,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-10-13 19:53:12,145 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-10-13 19:53:12,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-10-13 19:53:12,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 19:53:12,145 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-10-13 19:53:12,146 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-10-13 19:53:12,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-10-13 19:53:12,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 19:53:12,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 19:53:12,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 19:53:12,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 19:53:12,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-10-13 19:53:12,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 19:53:12,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 19:53:12,147 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
[2019-10-13 19:53:12,427 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 19:53:12,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 19:53:12,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 19:53:12,444 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-10-13 19:53:12,445 INFO L275 PluginConnector]: CDTParser initialized
[2019-10-13 19:53:12,445 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i
[2019-10-13 19:53:12,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82b565ba/99f56de7777e4614b0b8e8e67dda2a1e/FLAGd3869c9b4
[2019-10-13 19:53:12,967 INFO L306 CDTParser]: Found 1 translation units.
[2019-10-13 19:53:12,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy9_ground-2.i
[2019-10-13 19:53:12,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82b565ba/99f56de7777e4614b0b8e8e67dda2a1e/FLAGd3869c9b4
[2019-10-13 19:53:13,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a82b565ba/99f56de7777e4614b0b8e8e67dda2a1e
[2019-10-13 19:53:13,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 19:53:13,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 19:53:13,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 19:53:13,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 19:53:13,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 19:53:13,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:13" (1/1) ...
[2019-10-13 19:53:13,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd6405c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13, skipping insertion in model container
[2019-10-13 19:53:13,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:53:13" (1/1) ...
[2019-10-13 19:53:13,391 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-10-13 19:53:13,415 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-10-13 19:53:13,664 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:53:13,670 INFO L188 MainTranslator]: Completed pre-run
[2019-10-13 19:53:13,699 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:53:13,808 INFO L192 MainTranslator]: Completed translation
[2019-10-13 19:53:13,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13 WrapperNode
[2019-10-13 19:53:13,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 19:53:13,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 19:53:13,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 19:53:13,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 19:53:13,824 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ...
[2019-10-13 19:53:13,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ...
[2019-10-13 19:53:13,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ...
[2019-10-13 19:53:13,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ...
[2019-10-13 19:53:13,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ...
[2019-10-13 19:53:13,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ...
[2019-10-13 19:53:13,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (1/1) ...
[2019-10-13 19:53:13,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 19:53:13,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 19:53:13,870 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 19:53:13,870 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-10-13 19:53:13,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (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
[2019-10-13 19:53:13,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 19:53:13,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 19:53:13,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2019-10-13 19:53:13,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 19:53:13,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 19:53:13,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2019-10-13 19:53:13,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 19:53:13,932 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-10-13 19:53:13,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-13 19:53:13,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2019-10-13 19:53:13,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2019-10-13 19:53:13,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-13 19:53:13,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 19:53:13,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 19:53:14,376 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 19:53:14,377 INFO L284 CfgBuilder]: Removed 11 assume(true) statements.
[2019-10-13 19:53:14,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:14 BoogieIcfgContainer
[2019-10-13 19:53:14,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 19:53:14,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 19:53:14,379 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 19:53:14,382 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-10-13 19:53:14,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:53:13" (1/3) ...
[2019-10-13 19:53:14,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4d675c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:14, skipping insertion in model container
[2019-10-13 19:53:14,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:53:13" (2/3) ...
[2019-10-13 19:53:14,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4d675c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:53:14, skipping insertion in model container
[2019-10-13 19:53:14,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:53:14" (3/3) ...
[2019-10-13 19:53:14,385 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy9_ground-2.i
[2019-10-13 19:53:14,395 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 19:53:14,413 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 19:53:14,422 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 19:53:14,446 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-10-13 19:53:14,446 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-10-13 19:53:14,447 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 19:53:14,447 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 19:53:14,447 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 19:53:14,447 INFO L378 AbstractCegarLoop]: Difference is false
[2019-10-13 19:53:14,447 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 19:53:14,448 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 19:53:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states.
[2019-10-13 19:53:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2019-10-13 19:53:14,470 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 19:53:14,471 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]
[2019-10-13 19:53:14,472 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:53:14,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:53:14,476 INFO L82 PathProgramCache]: Analyzing trace with hash -178932642, now seen corresponding path program 1 times
[2019-10-13 19:53:14,483 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 19:53:14,484 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95701779]
[2019-10-13 19:53:14,484 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:53:14,484 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:53:14,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:53:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:53:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:53:14,637 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95701779]
[2019-10-13 19:53:14,638 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:53:14,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-10-13 19:53:14,639 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543344856]
[2019-10-13 19:53:14,643 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-13 19:53:14,645 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-10-13 19:53:14,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-13 19:53:14,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 19:53:14,663 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states.
[2019-10-13 19:53:14,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:53:14,693 INFO L93 Difference]: Finished difference Result 94 states and 137 transitions.
[2019-10-13 19:53:14,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2019-10-13 19:53:14,694 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 31
[2019-10-13 19:53:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:53:14,703 INFO L225 Difference]: With dead ends: 94
[2019-10-13 19:53:14,704 INFO L226 Difference]: Without dead ends: 46
[2019-10-13 19:53:14,711 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
[2019-10-13 19:53:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2019-10-13 19:53:14,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2019-10-13 19:53:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2019-10-13 19:53:14,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions.
[2019-10-13 19:53:14,755 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 31
[2019-10-13 19:53:14,755 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:53:14,755 INFO L462 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions.
[2019-10-13 19:53:14,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-13 19:53:14,756 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions.
[2019-10-13 19:53:14,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2019-10-13 19:53:14,757 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 19:53:14,759 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]
[2019-10-13 19:53:14,760 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:53:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:53:14,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1311438022, now seen corresponding path program 1 times
[2019-10-13 19:53:14,761 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 19:53:14,762 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273016019]
[2019-10-13 19:53:14,762 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:53:14,762 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:53:14,763 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:53:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:53:14,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 19:53:14,907 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273016019]
[2019-10-13 19:53:14,908 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:53:14,908 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 19:53:14,908 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345192710]
[2019-10-13 19:53:14,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 19:53:14,910 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-10-13 19:53:14,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 19:53:14,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 19:53:14,911 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 3 states.
[2019-10-13 19:53:14,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:53:14,935 INFO L93 Difference]: Finished difference Result 86 states and 106 transitions.
[2019-10-13 19:53:14,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-10-13 19:53:14,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31
[2019-10-13 19:53:14,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:53:14,938 INFO L225 Difference]: With dead ends: 86
[2019-10-13 19:53:14,938 INFO L226 Difference]: Without dead ends: 48
[2019-10-13 19:53:14,939 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
[2019-10-13 19:53:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2019-10-13 19:53:14,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47.
[2019-10-13 19:53:14,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2019-10-13 19:53:14,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions.
[2019-10-13 19:53:14,949 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 31
[2019-10-13 19:53:14,949 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:53:14,949 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions.
[2019-10-13 19:53:14,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 19:53:14,949 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions.
[2019-10-13 19:53:14,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2019-10-13 19:53:14,951 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 19:53:14,951 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]
[2019-10-13 19:53:14,951 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:53:14,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:53:14,952 INFO L82 PathProgramCache]: Analyzing trace with hash -953933084, now seen corresponding path program 1 times
[2019-10-13 19:53:14,952 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 19:53:14,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539834567]
[2019-10-13 19:53:14,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:53:14,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:53:14,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:53:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:53:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 19:53:15,034 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539834567]
[2019-10-13 19:53:15,035 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:53:15,035 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 19:53:15,035 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377608457]
[2019-10-13 19:53:15,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 19:53:15,039 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-10-13 19:53:15,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 19:53:15,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 19:53:15,043 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 3 states.
[2019-10-13 19:53:15,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:53:15,183 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions.
[2019-10-13 19:53:15,183 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-10-13 19:53:15,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33
[2019-10-13 19:53:15,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:53:15,185 INFO L225 Difference]: With dead ends: 100
[2019-10-13 19:53:15,185 INFO L226 Difference]: Without dead ends: 65
[2019-10-13 19:53:15,186 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
[2019-10-13 19:53:15,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2019-10-13 19:53:15,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 56.
[2019-10-13 19:53:15,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2019-10-13 19:53:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions.
[2019-10-13 19:53:15,196 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 33
[2019-10-13 19:53:15,197 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:53:15,197 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions.
[2019-10-13 19:53:15,197 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 19:53:15,197 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions.
[2019-10-13 19:53:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2019-10-13 19:53:15,199 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 19:53:15,199 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 19:53:15,200 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:53:15,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:53:15,200 INFO L82 PathProgramCache]: Analyzing trace with hash -753251022, now seen corresponding path program 1 times
[2019-10-13 19:53:15,200 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 19:53:15,201 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841386466]
[2019-10-13 19:53:15,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:53:15,201 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:53:15,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:53:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:53:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2019-10-13 19:53:15,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841386466]
[2019-10-13 19:53:15,325 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097797698]
[2019-10-13 19:53:15,326 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
[2019-10-13 19:53:15,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:53:15,424 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core
[2019-10-13 19:53:15,433 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 19:53:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2019-10-13 19:53:15,480 INFO L321 TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 19:53:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2019-10-13 19:53:15,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2017387792]
[2019-10-13 19:53:15,533 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 52
[2019-10-13 19:53:15,574 INFO L148 AbstractInterpreter]: Using domain IntervalDomain
[2019-10-13 19:53:15,575 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)
[2019-10-13 19:53:15,646 INFO L266 AbstractInterpreter]: Error location(s) were unreachable
[2019-10-13 19:53:15,653 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 57 variables.
[2019-10-13 19:53:15,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:53:15,658 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates
[2019-10-13 19:53:15,704 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes.
[2019-10-13 19:53:15,705 INFO L551 sIntCurrentIteration]: Unifying AI predicates
[2019-10-13 19:53:15,707 INFO L553 sIntCurrentIteration]: We unified 50 AI predicates to 50
[2019-10-13 19:53:15,707 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates
[2019-10-13 19:53:15,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences.
[2019-10-13 19:53:15,708 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7
[2019-10-13 19:53:15,708 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262543681]
[2019-10-13 19:53:15,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-13 19:53:15,710 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN
[2019-10-13 19:53:15,710 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy
[2019-10-13 19:53:15,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-13 19:53:15,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 19:53:15,711 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 2 states.
[2019-10-13 19:53:15,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:53:15,714 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions.
[2019-10-13 19:53:15,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2019-10-13 19:53:15,714 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 51
[2019-10-13 19:53:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:53:15,715 INFO L225 Difference]: With dead ends: 56
[2019-10-13 19:53:15,715 INFO L226 Difference]: Without dead ends: 0
[2019-10-13 19:53:15,715 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 19:53:15,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2019-10-13 19:53:15,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2019-10-13 19:53:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2019-10-13 19:53:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2019-10-13 19:53:15,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51
[2019-10-13 19:53:15,717 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:53:15,717 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2019-10-13 19:53:15,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-13 19:53:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2019-10-13 19:53:15,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2019-10-13 19:53:15,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 19:53:15,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2019-10-13 19:53:15,968 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2019-10-13 19:53:15,968 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true
[2019-10-13 19:53:15,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2019-10-13 19:53:15,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2019-10-13 19:53:15,969 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true
[2019-10-13 19:53:15,969 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2019-10-13 19:53:15,969 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2019-10-13 19:53:15,969 INFO L443 ceAbstractionStarter]: For program point L35-2(lines 35 37) no Hoare annotation was computed.
[2019-10-13 19:53:15,970 INFO L439 ceAbstractionStarter]: At program point L35-3(lines 35 37) the Hoare annotation is: false
[2019-10-13 19:53:15,970 INFO L443 ceAbstractionStarter]: For program point L35-4(lines 35 37) no Hoare annotation was computed.
[2019-10-13 19:53:15,970 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 4 52) no Hoare annotation was computed.
[2019-10-13 19:53:15,970 INFO L443 ceAbstractionStarter]: For program point L44-2(lines 44 46) no Hoare annotation was computed.
[2019-10-13 19:53:15,970 INFO L439 ceAbstractionStarter]: At program point L44-3(lines 44 46) the Hoare annotation is: false
[2019-10-13 19:53:15,970 INFO L443 ceAbstractionStarter]: For program point L44-4(lines 44 46) no Hoare annotation was computed.
[2019-10-13 19:53:15,970 INFO L443 ceAbstractionStarter]: For program point L20-2(lines 20 22) no Hoare annotation was computed.
[2019-10-13 19:53:15,971 INFO L439 ceAbstractionStarter]: At program point L20-3(lines 20 22) the Hoare annotation is: false
[2019-10-13 19:53:15,971 INFO L443 ceAbstractionStarter]: For program point L20-4(lines 20 22) no Hoare annotation was computed.
[2019-10-13 19:53:15,971 INFO L443 ceAbstractionStarter]: For program point L29-2(lines 29 31) no Hoare annotation was computed.
[2019-10-13 19:53:15,971 INFO L439 ceAbstractionStarter]: At program point L29-3(lines 29 31) the Hoare annotation is: false
[2019-10-13 19:53:15,971 INFO L443 ceAbstractionStarter]: For program point L29-4(lines 29 31) no Hoare annotation was computed.
[2019-10-13 19:53:15,971 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 4 52) no Hoare annotation was computed.
[2019-10-13 19:53:15,971 INFO L443 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed.
[2019-10-13 19:53:15,972 INFO L439 ceAbstractionStarter]: At program point L38-3(lines 38 40) the Hoare annotation is: false
[2019-10-13 19:53:15,972 INFO L443 ceAbstractionStarter]: For program point L38-4(lines 38 40) no Hoare annotation was computed.
[2019-10-13 19:53:15,972 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 4 52) the Hoare annotation is: true
[2019-10-13 19:53:15,972 INFO L443 ceAbstractionStarter]: For program point L23-2(lines 23 25) no Hoare annotation was computed.
[2019-10-13 19:53:15,972 INFO L439 ceAbstractionStarter]: At program point L23-3(lines 23 25) the Hoare annotation is: false
[2019-10-13 19:53:15,972 INFO L443 ceAbstractionStarter]: For program point L23-4(lines 23 25) no Hoare annotation was computed.
[2019-10-13 19:53:15,973 INFO L443 ceAbstractionStarter]: For program point L48-2(lines 48 50) no Hoare annotation was computed.
[2019-10-13 19:53:15,973 INFO L439 ceAbstractionStarter]: At program point L48-3(lines 48 50) the Hoare annotation is: false
[2019-10-13 19:53:15,973 INFO L443 ceAbstractionStarter]: For program point L48-4(lines 48 50) no Hoare annotation was computed.
[2019-10-13 19:53:15,973 INFO L443 ceAbstractionStarter]: For program point L32-2(lines 32 34) no Hoare annotation was computed.
[2019-10-13 19:53:15,973 INFO L439 ceAbstractionStarter]: At program point L32-3(lines 32 34) the Hoare annotation is: false
[2019-10-13 19:53:15,973 INFO L443 ceAbstractionStarter]: For program point L32-4(lines 32 34) no Hoare annotation was computed.
[2019-10-13 19:53:15,973 INFO L439 ceAbstractionStarter]: At program point L49(line 49) the Hoare annotation is: false
[2019-10-13 19:53:15,974 INFO L443 ceAbstractionStarter]: For program point L49-1(line 49) no Hoare annotation was computed.
[2019-10-13 19:53:15,974 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 18) no Hoare annotation was computed.
[2019-10-13 19:53:15,974 INFO L439 ceAbstractionStarter]: At program point L16-3(lines 16 18) the Hoare annotation is: false
[2019-10-13 19:53:15,974 INFO L443 ceAbstractionStarter]: For program point L16-4(lines 16 18) no Hoare annotation was computed.
[2019-10-13 19:53:15,974 INFO L443 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed.
[2019-10-13 19:53:15,974 INFO L439 ceAbstractionStarter]: At program point L41-3(lines 41 43) the Hoare annotation is: false
[2019-10-13 19:53:15,975 INFO L443 ceAbstractionStarter]: For program point L41-4(lines 41 43) no Hoare annotation was computed.
[2019-10-13 19:53:15,975 INFO L443 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed.
[2019-10-13 19:53:15,975 INFO L439 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: false
[2019-10-13 19:53:15,975 INFO L443 ceAbstractionStarter]: For program point L26-4(lines 26 28) no Hoare annotation was computed.
[2019-10-13 19:53:15,975 INFO L443 ceAbstractionStarter]: For program point L2-1(line 2) no Hoare annotation was computed.
[2019-10-13 19:53:15,975 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 2) no Hoare annotation was computed.
[2019-10-13 19:53:15,976 INFO L443 ceAbstractionStarter]: For program point L2-3(line 2) no Hoare annotation was computed.
[2019-10-13 19:53:15,976 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(line 2) the Hoare annotation is: true
[2019-10-13 19:53:15,976 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(line 2) no Hoare annotation was computed.
[2019-10-13 19:53:15,976 INFO L443 ceAbstractionStarter]: For program point L2(line 2) no Hoare annotation was computed.
[2019-10-13 19:53:15,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:53:15 BoogieIcfgContainer
[2019-10-13 19:53:15,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-10-13 19:53:15,988 INFO L168 Benchmark]: Toolchain (without parser) took 2613.85 ms. Allocated memory was 144.7 MB in the beginning and 233.8 MB in the end (delta: 89.1 MB). Free memory was 101.2 MB in the beginning and 167.9 MB in the end (delta: -66.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB.
[2019-10-13 19:53:15,990 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2019-10-13 19:53:15,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.54 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 180.0 MB in the end (delta: -79.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB.
[2019-10-13 19:53:15,991 INFO L168 Benchmark]: Boogie Preprocessor took 58.72 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 178.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
[2019-10-13 19:53:15,992 INFO L168 Benchmark]: RCFGBuilder took 508.61 ms. Allocated memory is still 201.9 MB. Free memory was 178.0 MB in the beginning and 153.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB.
[2019-10-13 19:53:15,993 INFO L168 Benchmark]: TraceAbstraction took 1606.45 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 153.1 MB in the beginning and 167.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB.
[2019-10-13 19:53:15,998 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 144.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 435.54 ms. Allocated memory was 144.7 MB in the beginning and 201.9 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 180.0 MB in the end (delta: -79.2 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 58.72 ms. Allocated memory is still 201.9 MB. Free memory was 180.0 MB in the beginning and 178.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 508.61 ms. Allocated memory is still 201.9 MB. Free memory was 178.0 MB in the beginning and 153.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1606.45 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 153.1 MB in the beginning and 167.9 MB in the end (delta: -14.8 MB). Peak memory consumption was 17.2 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: 41]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 20]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 26]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 16]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 32]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 48]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 38]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 44]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 23]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 29]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 35]: Loop Invariant
Derived loop invariant: 0
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 51 locations, 1 error locations. Result: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 158 SDtfs, 10 SDslu, 72 SDs, 0 SdLazy, 50 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred 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, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 20 PreInvPairs, 20 NumberOfFragments, 17 HoareAnnotationTreeSize, 20 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 17 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 197 NumberOfCodeBlocks, 197 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 242 ConstructedInterpolants, 0 QuantifiedInterpolants, 11348 SizeOfPredicates, 1 NumberOfNonLiveVariables, 177 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 28/31 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 126, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.895, AVG_VARS_REMOVED_DURING_WEAKENING: 1.12, AVG_WEAKENED_CONJUNCTS: 0.12, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...