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-crafted/bAnd2.i
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This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 19:52:40,910 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-10-13 19:52:40,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 19:52:40,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 19:52:40,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 19:52:40,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 19:52:40,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 19:52:40,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 19:52:40,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 19:52:40,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 19:52:40,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 19:52:40,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 19:52:40,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 19:52:40,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 19:52:40,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 19:52:40,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 19:52:40,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 19:52:40,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 19:52:40,957 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 19:52:40,959 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 19:52:40,961 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 19:52:40,962 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 19:52:40,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 19:52:40,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 19:52:40,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-10-13 19:52:40,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 19:52:40,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
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[2019-10-13 19:52:40,988 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 19:52:41,005 INFO L113 SettingsManager]: Loading preferences was successful
[2019-10-13 19:52:41,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 19:52:41,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 19:52:41,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-10-13 19:52:41,007 INFO L138 SettingsManager]: * Use SBE=true
[2019-10-13 19:52:41,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 19:52:41,008 INFO L138 SettingsManager]: * sizeof long=4
[2019-10-13 19:52:41,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-10-13 19:52:41,008 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-10-13 19:52:41,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-10-13 19:52:41,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 19:52:41,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 19:52:41,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 19:52:41,012 INFO L138 SettingsManager]: * sizeof long double=12
[2019-10-13 19:52:41,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-10-13 19:52:41,012 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-10-13 19:52:41,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-10-13 19:52:41,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 19:52:41,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-10-13 19:52:41,013 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-10-13 19:52:41,014 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-10-13 19:52:41,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 19:52:41,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 19:52:41,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 19:52:41,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 19:52:41,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-10-13 19:52:41,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 19:52:41,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 19:52:41,015 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 19:52:41,340 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 19:52:41,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 19:52:41,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 19:52:41,363 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-10-13 19:52:41,363 INFO L275 PluginConnector]: CDTParser initialized
[2019-10-13 19:52:41,364 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/bAnd2.i
[2019-10-13 19:52:41,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4897ab9d/7edf99332bc34659a5ce80d29401639e/FLAGc38391d9f
[2019-10-13 19:52:41,882 INFO L306 CDTParser]: Found 1 translation units.
[2019-10-13 19:52:41,883 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/bAnd2.i
[2019-10-13 19:52:41,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4897ab9d/7edf99332bc34659a5ce80d29401639e/FLAGc38391d9f
[2019-10-13 19:52:42,291 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4897ab9d/7edf99332bc34659a5ce80d29401639e
[2019-10-13 19:52:42,302 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 19:52:42,303 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 19:52:42,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 19:52:42,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 19:52:42,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 19:52:42,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:42" (1/1) ...
[2019-10-13 19:52:42,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b2e1afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42, skipping insertion in model container
[2019-10-13 19:52:42,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:52:42" (1/1) ...
[2019-10-13 19:52:42,320 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-10-13 19:52:42,338 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-10-13 19:52:42,550 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:52:42,560 INFO L188 MainTranslator]: Completed pre-run
[2019-10-13 19:52:42,583 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-10-13 19:52:42,600 INFO L192 MainTranslator]: Completed translation
[2019-10-13 19:52:42,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42 WrapperNode
[2019-10-13 19:52:42,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 19:52:42,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 19:52:42,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 19:52:42,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 19:52:42,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42" (1/1) ...
[2019-10-13 19:52:42,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42" (1/1) ...
[2019-10-13 19:52:42,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42" (1/1) ...
[2019-10-13 19:52:42,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42" (1/1) ...
[2019-10-13 19:52:42,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42" (1/1) ...
[2019-10-13 19:52:42,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42" (1/1) ...
[2019-10-13 19:52:42,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42" (1/1) ...
[2019-10-13 19:52:42,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 19:52:42,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 19:52:42,739 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 19:52:42,739 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-10-13 19:52:42,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42" (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 19:52:42,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 19:52:42,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 19:52:42,796 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd
[2019-10-13 19:52:42,796 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 19:52:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 19:52:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 19:52:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd
[2019-10-13 19:52:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2019-10-13 19:52:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-10-13 19:52:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-13 19:52:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2019-10-13 19:52:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-13 19:52:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 19:52:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 19:52:43,112 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 19:52:43,112 INFO L284 CfgBuilder]: Removed 3 assume(true) statements.
[2019-10-13 19:52:43,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:43 BoogieIcfgContainer
[2019-10-13 19:52:43,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 19:52:43,115 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 19:52:43,115 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 19:52:43,119 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-10-13 19:52:43,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:52:42" (1/3) ...
[2019-10-13 19:52:43,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaa253a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:43, skipping insertion in model container
[2019-10-13 19:52:43,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:52:42" (2/3) ...
[2019-10-13 19:52:43,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eaa253a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:52:43, skipping insertion in model container
[2019-10-13 19:52:43,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:52:43" (3/3) ...
[2019-10-13 19:52:43,123 INFO L109 eAbstractionObserver]: Analyzing ICFG bAnd2.i
[2019-10-13 19:52:43,134 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 19:52:43,142 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 19:52:43,154 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 19:52:43,175 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-10-13 19:52:43,175 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-10-13 19:52:43,175 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 19:52:43,175 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 19:52:43,175 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 19:52:43,175 INFO L378 AbstractCegarLoop]: Difference is false
[2019-10-13 19:52:43,176 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 19:52:43,176 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 19:52:43,192 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states.
[2019-10-13 19:52:43,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2019-10-13 19:52:43,198 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 19:52:43,199 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]
[2019-10-13 19:52:43,201 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:52:43,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:52:43,206 INFO L82 PathProgramCache]: Analyzing trace with hash -1283808693, now seen corresponding path program 1 times
[2019-10-13 19:52:43,213 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 19:52:43,214 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680401309]
[2019-10-13 19:52:43,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:43,214 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:43,214 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:52:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:52:43,365 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-10-13 19:52:43,365 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680401309]
[2019-10-13 19:52:43,366 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:52:43,367 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-10-13 19:52:43,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76675348]
[2019-10-13 19:52:43,372 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-13 19:52:43,373 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-10-13 19:52:43,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-13 19:52:43,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 19:52:43,392 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states.
[2019-10-13 19:52:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:52:43,419 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions.
[2019-10-13 19:52:43,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2019-10-13 19:52:43,421 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 32
[2019-10-13 19:52:43,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:52:43,431 INFO L225 Difference]: With dead ends: 54
[2019-10-13 19:52:43,431 INFO L226 Difference]: Without dead ends: 26
[2019-10-13 19:52:43,435 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 19:52:43,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2019-10-13 19:52:43,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2019-10-13 19:52:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2019-10-13 19:52:43,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions.
[2019-10-13 19:52:43,482 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 32
[2019-10-13 19:52:43,482 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:52:43,483 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions.
[2019-10-13 19:52:43,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-13 19:52:43,483 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions.
[2019-10-13 19:52:43,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2019-10-13 19:52:43,486 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 19:52:43,486 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]
[2019-10-13 19:52:43,486 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:52:43,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:52:43,487 INFO L82 PathProgramCache]: Analyzing trace with hash 721846027, now seen corresponding path program 1 times
[2019-10-13 19:52:43,487 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 19:52:43,488 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434866345]
[2019-10-13 19:52:43,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:43,488 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:43,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:52:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:52:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2019-10-13 19:52:43,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434866345]
[2019-10-13 19:52:43,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:52:43,584 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 19:52:43,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081881580]
[2019-10-13 19:52:43,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 19:52:43,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-10-13 19:52:43,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 19:52:43,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 19:52:43,588 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 3 states.
[2019-10-13 19:52:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:52:43,613 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions.
[2019-10-13 19:52:43,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-10-13 19:52:43,615 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 32
[2019-10-13 19:52:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:52:43,616 INFO L225 Difference]: With dead ends: 46
[2019-10-13 19:52:43,616 INFO L226 Difference]: Without dead ends: 28
[2019-10-13 19:52:43,617 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 19:52:43,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2019-10-13 19:52:43,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27.
[2019-10-13 19:52:43,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2019-10-13 19:52:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions.
[2019-10-13 19:52:43,625 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 32
[2019-10-13 19:52:43,626 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:52:43,626 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions.
[2019-10-13 19:52:43,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 19:52:43,626 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions.
[2019-10-13 19:52:43,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2019-10-13 19:52:43,628 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 19:52:43,628 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]
[2019-10-13 19:52:43,628 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:52:43,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:52:43,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1487444845, now seen corresponding path program 1 times
[2019-10-13 19:52:43,629 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 19:52:43,629 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302443247]
[2019-10-13 19:52:43,630 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:43,630 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:43,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:52:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:52:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2019-10-13 19:52:43,717 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302443247]
[2019-10-13 19:52:43,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821137884]
[2019-10-13 19:52:43,718 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 19:52:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:52:43,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-10-13 19:52:43,815 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 19:52:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-13 19:52:43,857 INFO L321 TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 19:52:43,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2019-10-13 19:52:43,915 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences.
[2019-10-13 19:52:43,915 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5
[2019-10-13 19:52:43,915 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627485750]
[2019-10-13 19:52:43,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 19:52:43,916 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-10-13 19:52:43,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 19:52:43,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2019-10-13 19:52:43,917 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 3 states.
[2019-10-13 19:52:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:52:43,933 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions.
[2019-10-13 19:52:43,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-10-13 19:52:43,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34
[2019-10-13 19:52:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:52:43,935 INFO L225 Difference]: With dead ends: 46
[2019-10-13 19:52:43,935 INFO L226 Difference]: Without dead ends: 29
[2019-10-13 19:52:43,936 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
[2019-10-13 19:52:43,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2019-10-13 19:52:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28.
[2019-10-13 19:52:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2019-10-13 19:52:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions.
[2019-10-13 19:52:43,943 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 34
[2019-10-13 19:52:43,944 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:52:43,944 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions.
[2019-10-13 19:52:43,944 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 19:52:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions.
[2019-10-13 19:52:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2019-10-13 19:52:43,946 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 19:52:43,946 INFO L380 BasicCegarLoop]: trace histogram [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]
[2019-10-13 19:52:44,150 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 19:52:44,151 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:52:44,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:52:44,152 INFO L82 PathProgramCache]: Analyzing trace with hash 2063023467, now seen corresponding path program 1 times
[2019-10-13 19:52:44,153 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 19:52:44,154 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640311599]
[2019-10-13 19:52:44,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:44,154 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:44,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:52:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:52:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2019-10-13 19:52:44,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640311599]
[2019-10-13 19:52:44,255 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 19:52:44,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 19:52:44,256 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915688687]
[2019-10-13 19:52:44,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 19:52:44,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-10-13 19:52:44,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 19:52:44,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 19:52:44,257 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states.
[2019-10-13 19:52:44,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:52:44,283 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions.
[2019-10-13 19:52:44,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2019-10-13 19:52:44,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40
[2019-10-13 19:52:44,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:52:44,285 INFO L225 Difference]: With dead ends: 43
[2019-10-13 19:52:44,286 INFO L226 Difference]: Without dead ends: 30
[2019-10-13 19:52:44,286 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 19:52:44,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2019-10-13 19:52:44,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29.
[2019-10-13 19:52:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2019-10-13 19:52:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions.
[2019-10-13 19:52:44,293 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 40
[2019-10-13 19:52:44,295 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:52:44,296 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions.
[2019-10-13 19:52:44,296 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 19:52:44,296 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions.
[2019-10-13 19:52:44,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2019-10-13 19:52:44,297 INFO L372 BasicCegarLoop]: Found error trace
[2019-10-13 19:52:44,298 INFO L380 BasicCegarLoop]: trace histogram [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]
[2019-10-13 19:52:44,298 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 19:52:44,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:52:44,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1550668567, now seen corresponding path program 1 times
[2019-10-13 19:52:44,299 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN
[2019-10-13 19:52:44,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674204064]
[2019-10-13 19:52:44,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:44,300 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 19:52:44,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 19:52:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:52:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2019-10-13 19:52:44,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674204064]
[2019-10-13 19:52:44,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895291318]
[2019-10-13 19:52:44,397 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
[2019-10-13 19:52:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 19:52:44,490 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 3 conjunts are in the unsatisfiable core
[2019-10-13 19:52:44,497 INFO L279 TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 19:52:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2019-10-13 19:52:44,520 INFO L321 TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 19:52:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked.
[2019-10-13 19:52:44,577 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1766319979]
[2019-10-13 19:52:44,584 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 43
[2019-10-13 19:52:44,625 INFO L148 AbstractInterpreter]: Using domain IntervalDomain
[2019-10-13 19:52:44,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2)
[2019-10-13 19:52:44,700 INFO L266 AbstractInterpreter]: Error location(s) were unreachable
[2019-10-13 19:52:44,702 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.
[2019-10-13 19:52:44,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 19:52:44,705 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates
[2019-10-13 19:52:44,749 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes.
[2019-10-13 19:52:44,749 INFO L551 sIntCurrentIteration]: Unifying AI predicates
[2019-10-13 19:52:44,751 INFO L553 sIntCurrentIteration]: We unified 41 AI predicates to 41
[2019-10-13 19:52:44,752 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates
[2019-10-13 19:52:44,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences.
[2019-10-13 19:52:44,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 4, 4] total 7
[2019-10-13 19:52:44,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702400461]
[2019-10-13 19:52:44,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-13 19:52:44,755 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN
[2019-10-13 19:52:44,755 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy
[2019-10-13 19:52:44,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-13 19:52:44,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 19:52:44,756 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 2 states.
[2019-10-13 19:52:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 19:52:44,758 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions.
[2019-10-13 19:52:44,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2019-10-13 19:52:44,759 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42
[2019-10-13 19:52:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 19:52:44,759 INFO L225 Difference]: With dead ends: 29
[2019-10-13 19:52:44,759 INFO L226 Difference]: Without dead ends: 0
[2019-10-13 19:52:44,760 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 41 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 19:52:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2019-10-13 19:52:44,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2019-10-13 19:52:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2019-10-13 19:52:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2019-10-13 19:52:44,761 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42
[2019-10-13 19:52:44,761 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-10-13 19:52:44,761 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2019-10-13 19:52:44,761 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-13 19:52:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2019-10-13 19:52:44,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2019-10-13 19:52:44,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 19:52:44,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2019-10-13 19:52:45,015 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2019-10-13 19:52:45,015 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true
[2019-10-13 19:52:45,015 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2019-10-13 19:52:45,015 INFO L443 ceAbstractionStarter]: For program point bAndFINAL(lines 7 16) no Hoare annotation was computed.
[2019-10-13 19:52:45,016 INFO L446 ceAbstractionStarter]: At program point bAndENTRY(lines 7 16) the Hoare annotation is: true
[2019-10-13 19:52:45,016 INFO L443 ceAbstractionStarter]: For program point bAndEXIT(lines 7 16) no Hoare annotation was computed.
[2019-10-13 19:52:45,016 INFO L443 ceAbstractionStarter]: For program point L12-2(lines 12 14) no Hoare annotation was computed.
[2019-10-13 19:52:45,021 INFO L446 ceAbstractionStarter]: At program point L12-3(lines 12 14) the Hoare annotation is: true
[2019-10-13 19:52:45,021 INFO L443 ceAbstractionStarter]: For program point L12-4(lines 12 14) no Hoare annotation was computed.
[2019-10-13 19:52:45,021 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2019-10-13 19:52:45,022 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true
[2019-10-13 19:52:45,022 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2019-10-13 19:52:45,022 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2019-10-13 19:52:45,022 INFO L439 ceAbstractionStarter]: At program point L33(line 33) the Hoare annotation is: false
[2019-10-13 19:52:45,022 INFO L443 ceAbstractionStarter]: For program point L35-2(lines 35 37) no Hoare annotation was computed.
[2019-10-13 19:52:45,022 INFO L443 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed.
[2019-10-13 19:52:45,022 INFO L439 ceAbstractionStarter]: At program point L35-3(lines 35 37) the Hoare annotation is: false
[2019-10-13 19:52:45,023 INFO L443 ceAbstractionStarter]: For program point L35-4(lines 35 37) no Hoare annotation was computed.
[2019-10-13 19:52:45,023 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 18 45) no Hoare annotation was computed.
[2019-10-13 19:52:45,023 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 18 45) no Hoare annotation was computed.
[2019-10-13 19:52:45,023 INFO L443 ceAbstractionStarter]: For program point L42(line 42) no Hoare annotation was computed.
[2019-10-13 19:52:45,026 INFO L443 ceAbstractionStarter]: For program point L30(line 30) no Hoare annotation was computed.
[2019-10-13 19:52:45,026 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 18 45) the Hoare annotation is: true
[2019-10-13 19:52:45,026 INFO L443 ceAbstractionStarter]: For program point L26-2(lines 26 28) no Hoare annotation was computed.
[2019-10-13 19:52:45,026 INFO L439 ceAbstractionStarter]: At program point L26-3(lines 26 28) the Hoare annotation is: false
[2019-10-13 19:52:45,026 INFO L439 ceAbstractionStarter]: At program point L26-4(lines 26 28) the Hoare annotation is: false
[2019-10-13 19:52:45,027 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed.
[2019-10-13 19:52:45,027 INFO L443 ceAbstractionStarter]: For program point L41(lines 41 43) no Hoare annotation was computed.
[2019-10-13 19:52:45,027 INFO L439 ceAbstractionStarter]: At program point L39(line 39) the Hoare annotation is: false
[2019-10-13 19:52:45,027 INFO L443 ceAbstractionStarter]: For program point L41-2(lines 41 43) no Hoare annotation was computed.
[2019-10-13 19:52:45,027 INFO L443 ceAbstractionStarter]: For program point L39-1(line 39) no Hoare annotation was computed.
[2019-10-13 19:52:45,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:52:45 BoogieIcfgContainer
[2019-10-13 19:52:45,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-10-13 19:52:45,042 INFO L168 Benchmark]: Toolchain (without parser) took 2735.12 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 102.9 MB in the beginning and 167.9 MB in the end (delta: -65.0 MB). Peak memory consumption was 30.9 MB. Max. memory is 7.1 GB.
[2019-10-13 19:52:45,044 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2019-10-13 19:52:45,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.86 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
[2019-10-13 19:52:45,048 INFO L168 Benchmark]: Boogie Preprocessor took 137.16 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.2 MB in the beginning and 178.8 MB in the end (delta: -86.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
[2019-10-13 19:52:45,050 INFO L168 Benchmark]: RCFGBuilder took 375.00 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 162.3 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB.
[2019-10-13 19:52:45,051 INFO L168 Benchmark]: TraceAbstraction took 1921.24 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 167.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB.
[2019-10-13 19:52:45,059 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.27 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 296.86 ms. Allocated memory is still 137.9 MB. Free memory was 102.7 MB in the beginning and 92.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 137.16 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.2 MB in the beginning and 178.8 MB in the end (delta: -86.6 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 375.00 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 162.3 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1921.24 ms. Allocated memory was 201.3 MB in the beginning and 233.8 MB in the end (delta: 32.5 MB). Free memory was 162.3 MB in the beginning and 167.9 MB in the end (delta: -5.6 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 42]: 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: 12]: Loop Invariant
Derived loop invariant: 1
- InvariantResult [Line: 26]: Loop Invariant
Derived loop invariant: 0
- InvariantResult [Line: 35]: Loop Invariant
Derived loop invariant: 0
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 31 locations, 1 error locations. Result: SAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 124 SDtfs, 3 SDslu, 78 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 33 PreInvPairs, 33 NumberOfFragments, 11 HoareAnnotationTreeSize, 33 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 256 NumberOfCodeBlocks, 256 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 12829 SizeOfPredicates, 2 NumberOfNonLiveVariables, 267 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 186/205 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 122, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9573170731707317, AVG_VARS_REMOVED_DURING_WEAKENING: 1.3902439024390243, AVG_WEAKENED_CONJUNCTS: 0.14634146341463414, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...