/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/array-2.c


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This is Ultimate 0.1.25-3af5e1f
[2020-09-04 23:10:14,424 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2020-09-04 23:10:14,473 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-04 23:10:14,475 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-04 23:10:14,478 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-04 23:10:14,482 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2020-09-04 23:10:14,521 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-09-04 23:10:14,538 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-04 23:10:14,538 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-04 23:10:14,540 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-04 23:10:14,541 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-04 23:10:14,541 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-04 23:10:14,541 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-04 23:10:14,541 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-04 23:10:14,542 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-04 23:10:14,542 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-04 23:10:14,542 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-04 23:10:14,543 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-04 23:10:14,543 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-04 23:10:14,543 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-04 23:10:14,544 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-04 23:10:14,544 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-04 23:10:14,544 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-09-04 23:10:14,544 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-04 23:10:14,545 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-04 23:10:14,545 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-04 23:10:14,545 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-04 23:10:14,545 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-09-04 23:10:14,546 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-04 23:10:14,546 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
[2020-09-04 23:10:15,063 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-04 23:10:15,094 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-04 23:10:15,100 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-04 23:10:15,104 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-04 23:10:15,104 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-04 23:10:15,106 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c
[2020-09-04 23:10:15,191 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2cb099a7/70d790c65aa24361b975bfd1e10ec1dd/FLAGa3cfa8309
[2020-09-04 23:10:15,725 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-04 23:10:15,726 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-2.c
[2020-09-04 23:10:15,735 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2cb099a7/70d790c65aa24361b975bfd1e10ec1dd/FLAGa3cfa8309
[2020-09-04 23:10:16,060 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a2cb099a7/70d790c65aa24361b975bfd1e10ec1dd
[2020-09-04 23:10:16,073 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-04 23:10:16,075 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-04 23:10:16,076 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-04 23:10:16,076 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-04 23:10:16,080 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-04 23:10:16,082 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:16" (1/1) ...
[2020-09-04 23:10:16,085 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffbb17c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16, skipping insertion in model container
[2020-09-04 23:10:16,086 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 11:10:16" (1/1) ...
[2020-09-04 23:10:16,095 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-04 23:10:16,120 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-04 23:10:16,357 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-04 23:10:16,364 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-04 23:10:16,393 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-04 23:10:16,420 INFO  L208         MainTranslator]: Completed translation
[2020-09-04 23:10:16,421 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16 WrapperNode
[2020-09-04 23:10:16,421 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-04 23:10:16,422 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-04 23:10:16,422 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-04 23:10:16,422 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-04 23:10:16,548 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ...
[2020-09-04 23:10:16,549 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ...
[2020-09-04 23:10:16,560 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ...
[2020-09-04 23:10:16,561 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ...
[2020-09-04 23:10:16,569 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ...
[2020-09-04 23:10:16,576 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ...
[2020-09-04 23:10:16,577 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ...
[2020-09-04 23:10:16,580 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-04 23:10:16,580 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-04 23:10:16,581 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-04 23:10:16,581 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-04 23:10:16,582 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-09-04 23:10:16,679 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-04 23:10:16,679 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-04 23:10:16,679 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-04 23:10:16,679 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-04 23:10:16,680 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-04 23:10:16,680 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-04 23:10:16,680 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-04 23:10:16,680 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-04 23:10:16,680 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-04 23:10:16,681 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-09-04 23:10:16,681 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-09-04 23:10:16,681 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-04 23:10:16,681 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-04 23:10:16,681 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-04 23:10:16,997 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-04 23:10:16,998 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-04 23:10:17,004 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:17 BoogieIcfgContainer
[2020-09-04 23:10:17,004 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-04 23:10:17,006 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-04 23:10:17,006 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-04 23:10:17,011 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-04 23:10:17,011 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 11:10:16" (1/3) ...
[2020-09-04 23:10:17,012 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:17, skipping insertion in model container
[2020-09-04 23:10:17,013 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 11:10:16" (2/3) ...
[2020-09-04 23:10:17,013 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a4291f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 11:10:17, skipping insertion in model container
[2020-09-04 23:10:17,013 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 11:10:17" (3/3) ...
[2020-09-04 23:10:17,016 INFO  L109   eAbstractionObserver]: Analyzing ICFG array-2.c
[2020-09-04 23:10:17,028 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-04 23:10:17,054 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-04 23:10:17,085 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-04 23:10:17,112 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-04 23:10:17,112 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-04 23:10:17,112 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-04 23:10:17,113 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-04 23:10:17,113 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-04 23:10:17,113 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-04 23:10:17,113 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-04 23:10:17,113 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-04 23:10:17,132 INFO  L276                IsEmpty]: Start isEmpty. Operand 46 states.
[2020-09-04 23:10:17,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-09-04 23:10:17,147 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 23:10:17,148 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 23:10:17,149 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 23:10:17,156 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 23:10:17,157 INFO  L82        PathProgramCache]: Analyzing trace with hash 683487989, now seen corresponding path program 1 times
[2020-09-04 23:10:17,167 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 23:10:17,167 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189946165]
[2020-09-04 23:10:17,168 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 23:10:17,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 23:10:17,564 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 23:10:17,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 23:10:17,582 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 23:10:17,583 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189946165]
[2020-09-04 23:10:17,586 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-04 23:10:17,586 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-04 23:10:17,587 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386682155]
[2020-09-04 23:10:17,594 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-04 23:10:17,595 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 23:10:17,614 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-04 23:10:17,615 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-04 23:10:17,618 INFO  L87              Difference]: Start difference. First operand 46 states. Second operand 5 states.
[2020-09-04 23:10:17,849 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 23:10:17,849 INFO  L93              Difference]: Finished difference Result 75 states and 82 transitions.
[2020-09-04 23:10:17,850 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-09-04 23:10:17,852 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 22
[2020-09-04 23:10:17,853 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 23:10:17,865 INFO  L225             Difference]: With dead ends: 75
[2020-09-04 23:10:17,865 INFO  L226             Difference]: Without dead ends: 49
[2020-09-04 23:10:17,871 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2020-09-04 23:10:17,896 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2020-09-04 23:10:17,933 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 37.
[2020-09-04 23:10:17,935 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2020-09-04 23:10:17,937 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions.
[2020-09-04 23:10:17,940 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 22
[2020-09-04 23:10:17,940 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 23:10:17,941 INFO  L479      AbstractCegarLoop]: Abstraction has 37 states and 38 transitions.
[2020-09-04 23:10:17,941 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-04 23:10:17,941 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions.
[2020-09-04 23:10:17,942 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2020-09-04 23:10:17,943 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 23:10:17,943 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 23:10:17,943 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-04 23:10:17,944 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 23:10:17,944 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 23:10:17,944 INFO  L82        PathProgramCache]: Analyzing trace with hash 403649603, now seen corresponding path program 1 times
[2020-09-04 23:10:17,945 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 23:10:17,945 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587314082]
[2020-09-04 23:10:17,945 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 23:10:18,019 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 23:10:18,479 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-04 23:10:18,482 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-04 23:10:18,492 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-04 23:10:18,493 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587314082]
[2020-09-04 23:10:18,493 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-04 23:10:18,494 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-04 23:10:18,494 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802354245]
[2020-09-04 23:10:18,496 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-04 23:10:18,497 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-04 23:10:18,497 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-04 23:10:18,497 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2020-09-04 23:10:18,498 INFO  L87              Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 11 states.
[2020-09-04 23:10:18,945 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-04 23:10:18,945 INFO  L93              Difference]: Finished difference Result 49 states and 50 transitions.
[2020-09-04 23:10:18,946 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2020-09-04 23:10:18,946 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 32
[2020-09-04 23:10:18,946 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-04 23:10:18,948 INFO  L225             Difference]: With dead ends: 49
[2020-09-04 23:10:18,948 INFO  L226             Difference]: Without dead ends: 43
[2020-09-04 23:10:18,950 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380
[2020-09-04 23:10:18,950 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2020-09-04 23:10:18,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40.
[2020-09-04 23:10:18,968 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2020-09-04 23:10:18,972 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions.
[2020-09-04 23:10:18,973 INFO  L78                 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 32
[2020-09-04 23:10:18,973 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-04 23:10:18,973 INFO  L479      AbstractCegarLoop]: Abstraction has 40 states and 41 transitions.
[2020-09-04 23:10:18,974 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-04 23:10:18,974 INFO  L276                IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions.
[2020-09-04 23:10:18,975 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2020-09-04 23:10:18,975 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-04 23:10:18,976 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-04 23:10:18,977 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-04 23:10:18,977 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-04 23:10:18,977 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-04 23:10:18,978 INFO  L82        PathProgramCache]: Analyzing trace with hash -913737726, now seen corresponding path program 1 times
[2020-09-04 23:10:18,978 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-04 23:10:18,979 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811512100]
[2020-09-04 23:10:18,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-04 23:10:19,046 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-04 23:10:19,050 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-09-04 23:10:19,087 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-04 23:10:19,087 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-09-04 23:10:19,120 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-04 23:10:19,121 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-04 23:10:19,121 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-04 23:10:19,164 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 11:10:19 BoogieIcfgContainer
[2020-09-04 23:10:19,164 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-04 23:10:19,168 INFO  L168              Benchmark]: Toolchain (without parser) took 3092.09 ms. Allocated memory was 145.2 MB in the beginning and 235.9 MB in the end (delta: 90.7 MB). Free memory was 102.4 MB in the beginning and 145.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB.
[2020-09-04 23:10:19,170 INFO  L168              Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
[2020-09-04 23:10:19,171 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 345.96 ms. Allocated memory is still 145.2 MB. Free memory was 102.2 MB in the beginning and 92.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-09-04 23:10:19,172 INFO  L168              Benchmark]: Boogie Preprocessor took 158.10 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-09-04 23:10:19,173 INFO  L168              Benchmark]: RCFGBuilder took 423.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 164.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB.
[2020-09-04 23:10:19,174 INFO  L168              Benchmark]: TraceAbstraction took 2158.65 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 164.6 MB in the beginning and 145.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB.
[2020-09-04 23:10:19,178 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.29 ms. Allocated memory is still 145.2 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 345.96 ms. Allocated memory is still 145.2 MB. Free memory was 102.2 MB in the beginning and 92.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 158.10 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.3 MB in the beginning and 181.4 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 423.89 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 164.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 2158.65 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 164.6 MB in the beginning and 145.3 MB in the end (delta: 19.3 MB). Peak memory consumption was 51.9 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 SIZE=1;
       VAL         [SIZE=1]
[L14]              unsigned int j,k;
       VAL         [SIZE=1]
[L15]              int array[SIZE], menor;
       VAL         [array={2:0}, SIZE=1]
[L17]              menor = __VERIFIER_nondet_int()
       VAL         [__VERIFIER_nondet_int()=0, array={2:0}, menor=0, SIZE=1]
[L19]              j=0
       VAL         [array={2:0}, j=0, menor=0, SIZE=1]
[L19]  COND TRUE   j<SIZE
       VAL         [array={2:0}, j=0, menor=0, SIZE=1]
[L20]              array[j] = __VERIFIER_nondet_int()
       VAL         [__VERIFIER_nondet_int()=0, array={2:0}, j=0, menor=0, SIZE=1]
[L22]  EXPR        array[j]
       VAL         [array={2:0}, array[j]=0, j=0, menor=0, SIZE=1]
[L22]  COND TRUE   array[j]<=menor
       VAL         [array={2:0}, array[j]=0, j=0, menor=0, SIZE=1]
[L23]  EXPR        array[j]
       VAL         [array={2:0}, array[j]=0, j=0, menor=0, SIZE=1]
[L23]              menor = array[j]
       VAL         [array={2:0}, array[j]=0, j=0, menor=0, SIZE=1]
[L19]              j++
       VAL         [array={2:0}, j=1, menor=0, SIZE=1]
[L19]  COND FALSE  !(j<SIZE)
       VAL         [array={2:0}, j=1, menor=0, SIZE=1]
[L26]  EXPR        array[0]
       VAL         [array={2:0}, array[0]=0, j=1, menor=0, SIZE=1]
[L26]  CALL        __VERIFIER_assert(array[0]>menor)
       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, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 67 SDtfs, 134 SDslu, 155 SDs, 0 SdLazy, 208 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 2 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 10885 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 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...