/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-regression/test29-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.24-fb55353
[2019-11-07 00:27:55,164 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2019-11-07 00:27:55,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-07 00:27:55,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-07 00:27:55,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-07 00:27:55,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-07 00:27:55,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-11-07 00:27:55,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2019-11-07 00:27:55,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-11-07 00:27:55,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-11-07 00:27:55,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2019-11-07 00:27:55,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-11-07 00:27:55,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-11-07 00:27:55,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-11-07 00:27:55,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-11-07 00:27:55,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-11-07 00:27:55,214 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-07 00:27:55,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-07 00:27:55,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-07 00:27:55,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-07 00:27:55,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-07 00:27:55,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-07 00:27:55,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2019-11-07 00:27:55,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-07 00:27:55,234 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-11-07 00:27:55,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-11-07 00:27:55,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-11-07 00:27:55,272 INFO L113 SettingsManager]: Loading preferences was successful
[2019-11-07 00:27:55,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-07 00:27:55,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-07 00:27:55,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2019-11-07 00:27:55,274 INFO L138 SettingsManager]: * Use SBE=true
[2019-11-07 00:27:55,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-07 00:27:55,275 INFO L138 SettingsManager]: * sizeof long=4
[2019-11-07 00:27:55,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2019-11-07 00:27:55,275 INFO L138 SettingsManager]: * sizeof POINTER=4
[2019-11-07 00:27:55,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2019-11-07 00:27:55,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-11-07 00:27:55,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-07 00:27:55,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-11-07 00:27:55,276 INFO L138 SettingsManager]: * sizeof long double=12
[2019-11-07 00:27:55,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2019-11-07 00:27:55,276 INFO L138 SettingsManager]: * Use constant arrays=true
[2019-11-07 00:27:55,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-11-07 00:27:55,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-07 00:27:55,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-11-07 00:27:55,277 INFO L138 SettingsManager]: * To the following directory=./dump/
[2019-11-07 00:27:55,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2019-11-07 00:27:55,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-07 00:27:55,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-07 00:27:55,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-11-07 00:27:55,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-07 00:27:55,278 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2019-11-07 00:27:55,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-07 00:27:55,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-07 00:27:55,279 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES
[2019-11-07 00:27:55,552 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-07 00:27:55,568 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-07 00:27:55,571 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-07 00:27:55,573 INFO L271 PluginConnector]: Initializing CDTParser...
[2019-11-07 00:27:55,574 INFO L275 PluginConnector]: CDTParser initialized
[2019-11-07 00:27:55,575 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c
[2019-11-07 00:27:55,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c9392a6/2d0a4f889952423991d122022e3a68e4/FLAGbcfeb4d17
[2019-11-07 00:27:56,135 INFO L306 CDTParser]: Found 1 translation units.
[2019-11-07 00:27:56,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c
[2019-11-07 00:27:56,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c9392a6/2d0a4f889952423991d122022e3a68e4/FLAGbcfeb4d17
[2019-11-07 00:27:56,539 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c9392a6/2d0a4f889952423991d122022e3a68e4
[2019-11-07 00:27:56,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-07 00:27:56,557 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-07 00:27:56,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-07 00:27:56,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-07 00:27:56,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-07 00:27:56,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:27:56" (1/1) ...
[2019-11-07 00:27:56,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60924fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56, skipping insertion in model container
[2019-11-07 00:27:56,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:27:56" (1/1) ...
[2019-11-07 00:27:56,593 INFO L142 MainTranslator]: Starting translation in SV-COMP mode
[2019-11-07 00:27:56,643 INFO L173 MainTranslator]: Built tables and reachable declarations
[2019-11-07 00:27:56,871 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-11-07 00:27:56,881 INFO L188 MainTranslator]: Completed pre-run
[2019-11-07 00:27:56,896 INFO L206 PostProcessor]: Analyzing one entry point: main
[2019-11-07 00:27:56,985 INFO L192 MainTranslator]: Completed translation
[2019-11-07 00:27:56,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56 WrapperNode
[2019-11-07 00:27:56,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-07 00:27:56,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-07 00:27:56,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-07 00:27:56,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2019-11-07 00:27:57,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56" (1/1) ...
[2019-11-07 00:27:57,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56" (1/1) ...
[2019-11-07 00:27:57,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56" (1/1) ...
[2019-11-07 00:27:57,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56" (1/1) ...
[2019-11-07 00:27:57,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56" (1/1) ...
[2019-11-07 00:27:57,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56" (1/1) ...
[2019-11-07 00:27:57,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56" (1/1) ...
[2019-11-07 00:27:57,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-07 00:27:57,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-07 00:27:57,023 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-11-07 00:27:57,023 INFO L275 PluginConnector]: RCFGBuilder initialized
[2019-11-07 00:27:57,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-07 00:27:57,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-07 00:27:57,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-07 00:27:57,087 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2019-11-07 00:27:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-07 00:27:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-07 00:27:57,087 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2019-11-07 00:27:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-11-07 00:27:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2019-11-07 00:27:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2019-11-07 00:27:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-11-07 00:27:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-07 00:27:57,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-07 00:27:57,308 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-07 00:27:57,309 INFO L284 CfgBuilder]: Removed 0 assume(true) statements.
[2019-11-07 00:27:57,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:27:57 BoogieIcfgContainer
[2019-11-07 00:27:57,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-07 00:27:57,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-07 00:27:57,311 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2019-11-07 00:27:57,314 INFO L275 PluginConnector]: TraceAbstraction initialized
[2019-11-07 00:27:57,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:27:56" (1/3) ...
[2019-11-07 00:27:57,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb182d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:27:57, skipping insertion in model container
[2019-11-07 00:27:57,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:27:56" (2/3) ...
[2019-11-07 00:27:57,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb182d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:27:57, skipping insertion in model container
[2019-11-07 00:27:57,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:27:57" (3/3) ...
[2019-11-07 00:27:57,318 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c
[2019-11-07 00:27:57,328 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-07 00:27:57,335 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-07 00:27:57,347 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-07 00:27:57,371 INFO L373 AbstractCegarLoop]: Interprodecural is true
[2019-11-07 00:27:57,371 INFO L374 AbstractCegarLoop]: Hoare is true
[2019-11-07 00:27:57,372 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-07 00:27:57,372 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-07 00:27:57,372 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-07 00:27:57,372 INFO L378 AbstractCegarLoop]: Difference is false
[2019-11-07 00:27:57,372 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-07 00:27:57,373 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-07 00:27:57,386 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states.
[2019-11-07 00:27:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2019-11-07 00:27:57,391 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-07 00:27:57,391 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-07 00:27:57,393 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 00:27:57,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 00:27:57,399 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times
[2019-11-07 00:27:57,407 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN
[2019-11-07 00:27:57,407 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401367390]
[2019-11-07 00:27:57,407 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 00:27:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 00:27:57,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-07 00:27:57,594 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401367390]
[2019-11-07 00:27:57,595 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 00:27:57,596 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-07 00:27:57,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720394296]
[2019-11-07 00:27:57,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-07 00:27:57,608 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-11-07 00:27:57,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-07 00:27:57,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-07 00:27:57,659 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states.
[2019-11-07 00:27:57,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 00:27:57,746 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions.
[2019-11-07 00:27:57,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2019-11-07 00:27:57,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13
[2019-11-07 00:27:57,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 00:27:57,757 INFO L225 Difference]: With dead ends: 34
[2019-11-07 00:27:57,758 INFO L226 Difference]: Without dead ends: 21
[2019-11-07 00:27:57,760 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-07 00:27:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2019-11-07 00:27:57,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16.
[2019-11-07 00:27:57,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2019-11-07 00:27:57,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions.
[2019-11-07 00:27:57,793 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13
[2019-11-07 00:27:57,793 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-07 00:27:57,793 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions.
[2019-11-07 00:27:57,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-07 00:27:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions.
[2019-11-07 00:27:57,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2019-11-07 00:27:57,795 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-07 00:27:57,795 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-07 00:27:57,795 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 00:27:57,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 00:27:57,796 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times
[2019-11-07 00:27:57,796 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN
[2019-11-07 00:27:57,797 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515843512]
[2019-11-07 00:27:57,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 00:27:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 00:27:57,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-07 00:27:57,899 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515843512]
[2019-11-07 00:27:57,899 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 00:27:57,901 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-07 00:27:57,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954637299]
[2019-11-07 00:27:57,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-11-07 00:27:57,903 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-11-07 00:27:57,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-11-07 00:27:57,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2019-11-07 00:27:57,904 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states.
[2019-11-07 00:27:58,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 00:27:58,017 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions.
[2019-11-07 00:27:58,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2019-11-07 00:27:58,017 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13
[2019-11-07 00:27:58,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 00:27:58,018 INFO L225 Difference]: With dead ends: 23
[2019-11-07 00:27:58,019 INFO L226 Difference]: Without dead ends: 14
[2019-11-07 00:27:58,020 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2019-11-07 00:27:58,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2019-11-07 00:27:58,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2019-11-07 00:27:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2019-11-07 00:27:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions.
[2019-11-07 00:27:58,024 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13
[2019-11-07 00:27:58,025 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-07 00:27:58,025 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions.
[2019-11-07 00:27:58,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-11-07 00:27:58,025 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions.
[2019-11-07 00:27:58,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2019-11-07 00:27:58,026 INFO L402 BasicCegarLoop]: Found error trace
[2019-11-07 00:27:58,026 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-11-07 00:27:58,026 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 00:27:58,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 00:27:58,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times
[2019-11-07 00:27:58,027 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN
[2019-11-07 00:27:58,027 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565052210]
[2019-11-07 00:27:58,028 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 00:27:58,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 00:27:58,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-07 00:27:58,160 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565052210]
[2019-11-07 00:27:58,160 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 00:27:58,161 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-07 00:27:58,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418824680]
[2019-11-07 00:27:58,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-11-07 00:27:58,162 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN
[2019-11-07 00:27:58,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-11-07 00:27:58,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2019-11-07 00:27:58,166 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 7 states.
[2019-11-07 00:27:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 00:27:58,220 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions.
[2019-11-07 00:27:58,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2019-11-07 00:27:58,220 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13
[2019-11-07 00:27:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 00:27:58,221 INFO L225 Difference]: With dead ends: 14
[2019-11-07 00:27:58,221 INFO L226 Difference]: Without dead ends: 0
[2019-11-07 00:27:58,222 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2019-11-07 00:27:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2019-11-07 00:27:58,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2019-11-07 00:27:58,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2019-11-07 00:27:58,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2019-11-07 00:27:58,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13
[2019-11-07 00:27:58,223 INFO L84 Accepts]: Finished accepts. word is rejected.
[2019-11-07 00:27:58,223 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2019-11-07 00:27:58,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-11-07 00:27:58,223 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2019-11-07 00:27:58,223 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2019-11-07 00:27:58,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2019-11-07 00:27:58,248 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2019-11-07 00:27:58,249 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true
[2019-11-07 00:27:58,249 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2019-11-07 00:27:58,249 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2019-11-07 00:27:58,249 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true
[2019-11-07 00:27:58,250 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2019-11-07 00:27:58,250 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2019-11-07 00:27:58,250 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed.
[2019-11-07 00:27:58,250 INFO L443 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed.
[2019-11-07 00:27:58,251 INFO L443 ceAbstractionStarter]: For program point L21-2(lines 21 23) no Hoare annotation was computed.
[2019-11-07 00:27:58,251 INFO L443 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed.
[2019-11-07 00:27:58,251 INFO L443 ceAbstractionStarter]: For program point L15-2(line 15) no Hoare annotation was computed.
[2019-11-07 00:27:58,251 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed.
[2019-11-07 00:27:58,251 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 11 29) the Hoare annotation is: true
[2019-11-07 00:27:58,252 INFO L439 ceAbstractionStarter]: At program point L22(lines 12 29) the Hoare annotation is: false
[2019-11-07 00:27:58,252 INFO L443 ceAbstractionStarter]: For program point L16(lines 16 20) no Hoare annotation was computed.
[2019-11-07 00:27:58,252 INFO L443 ceAbstractionStarter]: For program point L16-2(lines 16 20) no Hoare annotation was computed.
[2019-11-07 00:27:58,252 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed.
[2019-11-07 00:27:58,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:27:58 BoogieIcfgContainer
[2019-11-07 00:27:58,263 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2019-11-07 00:27:58,266 INFO L168 Benchmark]: Toolchain (without parser) took 1708.04 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 106.6 MB in the end (delta: -2.9 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB.
[2019-11-07 00:27:58,268 INFO L168 Benchmark]: CDTParser took 1.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2019-11-07 00:27:58,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 420.12 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 181.4 MB in the end (delta: -77.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB.
[2019-11-07 00:27:58,273 INFO L168 Benchmark]: Boogie Preprocessor took 34.78 ms. Allocated memory is still 202.4 MB. Free memory was 181.4 MB in the beginning and 179.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB.
[2019-11-07 00:27:58,274 INFO L168 Benchmark]: RCFGBuilder took 287.75 ms. Allocated memory is still 202.4 MB. Free memory was 179.1 MB in the beginning and 166.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
[2019-11-07 00:27:58,276 INFO L168 Benchmark]: TraceAbstraction took 951.57 ms. Allocated memory is still 202.4 MB. Free memory was 165.5 MB in the beginning and 106.6 MB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB.
[2019-11-07 00:27:58,285 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 420.12 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 181.4 MB in the end (delta: -77.9 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 34.78 ms. Allocated memory is still 202.4 MB. Free memory was 181.4 MB in the beginning and 179.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 287.75 ms. Allocated memory is still 202.4 MB. Free memory was 179.1 MB in the beginning and 166.2 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 951.57 ms. Allocated memory is still 202.4 MB. Free memory was 165.5 MB in the beginning and 106.6 MB in the end (delta: 58.9 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 27]: 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: 0
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 28 SDslu, 72 SDs, 0 SdLazy, 73 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1212 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...