/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/count_up_down-2.c


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This is Ultimate 0.1.25-72570d3
[2020-08-22 23:01:03,018 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2020-08-22 23:01:03,069 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2020-08-22 23:01:03,099 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-08-22 23:01:03,110 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-22 23:01:03,110 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 23:01:03,112 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 23:01:03,112 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-22 23:01:03,112 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-22 23:01:03,113 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-22 23:01:03,113 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-22 23:01:03,113 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 23:01:03,113 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 23:01:03,113 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 23:01:03,114 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-22 23:01:03,114 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-22 23:01:03,114 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-22 23:01:03,114 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-22 23:01:03,114 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 23:01:03,115 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-08-22 23:01:03,115 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-22 23:01:03,115 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-22 23:01:03,115 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 23:01:03,116 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 23:01:03,116 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-08-22 23:01:03,116 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 23:01:03,116 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true
[2020-08-22 23:01:03,439 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 23:01:03,455 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 23:01:03,459 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 23:01:03,461 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-22 23:01:03,462 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-22 23:01:03,463 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down-2.c
[2020-08-22 23:01:03,541 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f1c61e6/8089d670023f407faa01f54369374cc0/FLAG946d7e4d7
[2020-08-22 23:01:04,066 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-22 23:01:04,067 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-2.c
[2020-08-22 23:01:04,074 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f1c61e6/8089d670023f407faa01f54369374cc0/FLAG946d7e4d7
[2020-08-22 23:01:04,418 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/82f1c61e6/8089d670023f407faa01f54369374cc0
[2020-08-22 23:01:04,428 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 23:01:04,430 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 23:01:04,431 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 23:01:04,431 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 23:01:04,435 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 23:01:04,436 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:04" (1/1) ...
[2020-08-22 23:01:04,439 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5545c67b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04, skipping insertion in model container
[2020-08-22 23:01:04,439 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:01:04" (1/1) ...
[2020-08-22 23:01:04,449 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-22 23:01:04,468 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-22 23:01:04,634 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 23:01:04,641 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-22 23:01:04,661 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 23:01:04,679 INFO  L208         MainTranslator]: Completed translation
[2020-08-22 23:01:04,680 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04 WrapperNode
[2020-08-22 23:01:04,680 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 23:01:04,681 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 23:01:04,681 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 23:01:04,681 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 23:01:04,692 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04" (1/1) ...
[2020-08-22 23:01:04,692 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04" (1/1) ...
[2020-08-22 23:01:04,696 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04" (1/1) ...
[2020-08-22 23:01:04,696 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04" (1/1) ...
[2020-08-22 23:01:04,699 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04" (1/1) ...
[2020-08-22 23:01:04,704 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04" (1/1) ...
[2020-08-22 23:01:04,705 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04" (1/1) ...
[2020-08-22 23:01:04,785 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 23:01:04,786 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 23:01:04,786 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 23:01:04,786 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-22 23:01:04,790 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04" (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
[2020-08-22 23:01:04,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 23:01:04,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 23:01:04,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-08-22 23:01:04,854 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 23:01:04,855 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 23:01:04,855 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-08-22 23:01:04,855 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint
[2020-08-22 23:01:04,855 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-22 23:01:04,855 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 23:01:04,855 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 23:01:05,028 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 23:01:05,028 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-08-22 23:01:05,032 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:05 BoogieIcfgContainer
[2020-08-22 23:01:05,032 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 23:01:05,033 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 23:01:05,033 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 23:01:05,037 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-22 23:01:05,037 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:01:04" (1/3) ...
[2020-08-22 23:01:05,038 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b949b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:05, skipping insertion in model container
[2020-08-22 23:01:05,038 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:01:04" (2/3) ...
[2020-08-22 23:01:05,038 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b949b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:01:05, skipping insertion in model container
[2020-08-22 23:01:05,039 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:01:05" (3/3) ...
[2020-08-22 23:01:05,040 INFO  L109   eAbstractionObserver]: Analyzing ICFG count_up_down-2.c
[2020-08-22 23:01:05,051 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 23:01:05,058 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 23:01:05,073 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 23:01:05,104 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-22 23:01:05,104 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-22 23:01:05,104 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-22 23:01:05,104 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 23:01:05,105 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 23:01:05,105 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-22 23:01:05,105 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 23:01:05,105 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 23:01:05,124 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states.
[2020-08-22 23:01:05,136 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-08-22 23:01:05,136 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 23:01:05,138 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 23:01:05,138 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 23:01:05,145 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 23:01:05,146 INFO  L82        PathProgramCache]: Analyzing trace with hash 1049095342, now seen corresponding path program 1 times
[2020-08-22 23:01:05,158 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 23:01:05,159 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681462196]
[2020-08-22 23:01:05,159 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 23:01:05,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 23:01:05,286 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 23:01:05,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 23:01:05,294 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 23:01:05,295 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681462196]
[2020-08-22 23:01:05,297 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 23:01:05,297 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-08-22 23:01:05,298 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532014791]
[2020-08-22 23:01:05,303 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-08-22 23:01:05,303 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 23:01:05,317 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-08-22 23:01:05,318 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-08-22 23:01:05,320 INFO  L87              Difference]: Start difference. First operand 26 states. Second operand 2 states.
[2020-08-22 23:01:05,345 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 23:01:05,345 INFO  L93              Difference]: Finished difference Result 37 states and 40 transitions.
[2020-08-22 23:01:05,346 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-08-22 23:01:05,347 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 13
[2020-08-22 23:01:05,347 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 23:01:05,355 INFO  L225             Difference]: With dead ends: 37
[2020-08-22 23:01:05,356 INFO  L226             Difference]: Without dead ends: 20
[2020-08-22 23:01:05,359 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-08-22 23:01:05,377 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2020-08-22 23:01:05,394 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2020-08-22 23:01:05,396 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2020-08-22 23:01:05,397 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2020-08-22 23:01:05,399 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13
[2020-08-22 23:01:05,399 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 23:01:05,399 INFO  L479      AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2020-08-22 23:01:05,400 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-08-22 23:01:05,400 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2020-08-22 23:01:05,400 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-08-22 23:01:05,401 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 23:01:05,401 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 23:01:05,401 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 23:01:05,402 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 23:01:05,402 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 23:01:05,402 INFO  L82        PathProgramCache]: Analyzing trace with hash 1039860132, now seen corresponding path program 1 times
[2020-08-22 23:01:05,402 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 23:01:05,406 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786948010]
[2020-08-22 23:01:05,406 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 23:01:05,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 23:01:05,444 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 23:01:05,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 23:01:05,458 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 23:01:05,474 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-22 23:01:05,474 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-22 23:01:05,475 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-22 23:01:05,493 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:01:05 BoogieIcfgContainer
[2020-08-22 23:01:05,493 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-22 23:01:05,496 INFO  L168              Benchmark]: Toolchain (without parser) took 1065.73 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 101.7 MB in the beginning and 144.5 MB in the end (delta: -42.8 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB.
[2020-08-22 23:01:05,497 INFO  L168              Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
[2020-08-22 23:01:05,498 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 249.61 ms. Allocated memory is still 137.4 MB. Free memory was 101.5 MB in the beginning and 92.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
[2020-08-22 23:01:05,499 INFO  L168              Benchmark]: Boogie Preprocessor took 105.11 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 180.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB.
[2020-08-22 23:01:05,500 INFO  L168              Benchmark]: RCFGBuilder took 245.72 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 167.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
[2020-08-22 23:01:05,501 INFO  L168              Benchmark]: TraceAbstraction took 460.08 ms. Allocated memory is still 200.8 MB. Free memory was 167.3 MB in the beginning and 144.5 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB.
[2020-08-22 23:01:05,506 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.36 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 249.61 ms. Allocated memory is still 137.4 MB. Free memory was 101.5 MB in the beginning and 92.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 105.11 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 92.1 MB in the beginning and 180.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 245.72 ms. Allocated memory is still 200.8 MB. Free memory was 180.8 MB in the beginning and 167.9 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 460.08 ms. Allocated memory is still 200.8 MB. Free memory was 167.3 MB in the beginning and 144.5 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L13]              unsigned int n = __VERIFIER_nondet_uint();
       VAL         [__VERIFIER_nondet_uint()=0, n=0]
[L14]              unsigned int x=n, y=0;
       VAL         [n=0, x=0, y=0]
[L15]  COND FALSE  !(x>0)
       VAL         [n=0, x=0, y=0]
[L20]  CALL        __VERIFIER_assert(y!=n)
       VAL         [\old(cond)=0]
[L4]   COND TRUE   !(cond)
       VAL         [\old(cond)=0, cond=0]
[L5]               __VERIFIER_error()
       VAL         [\old(cond)=0, cond=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...