/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/array-fpi/s12iff.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-72570d3
[2020-08-22 23:00:24,502 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2020-08-22 23:00:24,543 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-22 23:00:24,544 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-22 23:00:24,545 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-22 23:00:24,547 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-22 23:00:24,549 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2020-08-22 23:00:24,574 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 23:00:24,585 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-22 23:00:24,585 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 23:00:24,587 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 23:00:24,587 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-22 23:00:24,587 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-22 23:00:24,587 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-22 23:00:24,588 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-22 23:00:24,588 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 23:00:24,588 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 23:00:24,588 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 23:00:24,588 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-22 23:00:24,589 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-22 23:00:24,589 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-22 23:00:24,589 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-22 23:00:24,589 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 23:00:24,589 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-08-22 23:00:24,590 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-22 23:00:24,590 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-22 23:00:24,590 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 23:00:24,590 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 23:00:24,590 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-08-22 23:00:24,591 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 23:00:24,591 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 23:00:24,879 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 23:00:24,899 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 23:00:24,903 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 23:00:24,905 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-22 23:00:24,906 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-22 23:00:24,906 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12iff.c
[2020-08-22 23:00:24,980 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d740e4a/458feebb2b46417d87e07f07a65fe165/FLAG0f5621bcf
[2020-08-22 23:00:25,494 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-22 23:00:25,495 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s12iff.c
[2020-08-22 23:00:25,504 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d740e4a/458feebb2b46417d87e07f07a65fe165/FLAG0f5621bcf
[2020-08-22 23:00:25,866 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d740e4a/458feebb2b46417d87e07f07a65fe165
[2020-08-22 23:00:25,877 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 23:00:25,879 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 23:00:25,880 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 23:00:25,881 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 23:00:25,884 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 23:00:25,885 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:25" (1/1) ...
[2020-08-22 23:00:25,888 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3178309e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:25, skipping insertion in model container
[2020-08-22 23:00:25,888 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:00:25" (1/1) ...
[2020-08-22 23:00:25,897 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-22 23:00:25,916 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-22 23:00:26,102 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 23:00:26,113 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-22 23:00:26,140 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 23:00:26,158 INFO  L208         MainTranslator]: Completed translation
[2020-08-22 23:00:26,159 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26 WrapperNode
[2020-08-22 23:00:26,159 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 23:00:26,160 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 23:00:26,160 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 23:00:26,160 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 23:00:26,264 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26" (1/1) ...
[2020-08-22 23:00:26,264 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26" (1/1) ...
[2020-08-22 23:00:26,273 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26" (1/1) ...
[2020-08-22 23:00:26,274 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26" (1/1) ...
[2020-08-22 23:00:26,285 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26" (1/1) ...
[2020-08-22 23:00:26,291 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26" (1/1) ...
[2020-08-22 23:00:26,293 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26" (1/1) ...
[2020-08-22 23:00:26,298 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 23:00:26,299 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 23:00:26,299 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 23:00:26,299 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-22 23:00:26,300 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26" (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 23:00:26,365 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 23:00:26,365 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 23:00:26,366 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-08-22 23:00:26,366 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-08-22 23:00:26,367 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 23:00:26,367 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 23:00:26,367 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-08-22 23:00:26,367 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-08-22 23:00:26,367 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-08-22 23:00:26,367 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-22 23:00:26,367 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-22 23:00:26,368 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-22 23:00:26,368 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-22 23:00:26,369 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-22 23:00:26,369 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-22 23:00:26,369 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-22 23:00:26,370 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-22 23:00:26,370 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 23:00:26,370 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 23:00:26,730 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 23:00:26,730 INFO  L295             CfgBuilder]: Removed 3 assume(true) statements.
[2020-08-22 23:00:26,736 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:26 BoogieIcfgContainer
[2020-08-22 23:00:26,736 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 23:00:26,738 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 23:00:26,738 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 23:00:26,741 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-22 23:00:26,741 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:00:25" (1/3) ...
[2020-08-22 23:00:26,742 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5445d42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:26, skipping insertion in model container
[2020-08-22 23:00:26,742 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:00:26" (2/3) ...
[2020-08-22 23:00:26,743 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5445d42b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:00:26, skipping insertion in model container
[2020-08-22 23:00:26,743 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:00:26" (3/3) ...
[2020-08-22 23:00:26,745 INFO  L109   eAbstractionObserver]: Analyzing ICFG s12iff.c
[2020-08-22 23:00:26,757 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 23:00:26,765 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 23:00:26,781 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 23:00:26,804 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-22 23:00:26,804 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-22 23:00:26,804 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-22 23:00:26,805 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 23:00:26,805 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 23:00:26,805 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-22 23:00:26,805 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 23:00:26,806 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 23:00:26,827 INFO  L276                IsEmpty]: Start isEmpty. Operand 80 states.
[2020-08-22 23:00:26,838 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-08-22 23:00:26,838 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 23:00:26,839 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]
[2020-08-22 23:00:26,840 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 23:00:26,846 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 23:00:26,847 INFO  L82        PathProgramCache]: Analyzing trace with hash 350973390, now seen corresponding path program 1 times
[2020-08-22 23:00:26,856 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 23:00:26,857 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019162137]
[2020-08-22 23:00:26,857 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 23:00:26,968 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 23:00:27,056 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 23:00:27,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 23:00:27,067 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-22 23:00:27,069 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 23:00:27,081 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 23:00:27,083 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019162137]
[2020-08-22 23:00:27,085 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 23:00:27,086 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-22 23:00:27,087 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25032904]
[2020-08-22 23:00:27,093 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-22 23:00:27,094 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 23:00:27,108 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-22 23:00:27,109 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-22 23:00:27,111 INFO  L87              Difference]: Start difference. First operand 80 states. Second operand 3 states.
[2020-08-22 23:00:27,396 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 23:00:27,397 INFO  L93              Difference]: Finished difference Result 143 states and 162 transitions.
[2020-08-22 23:00:27,398 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-22 23:00:27,399 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 33
[2020-08-22 23:00:27,400 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 23:00:27,410 INFO  L225             Difference]: With dead ends: 143
[2020-08-22 23:00:27,410 INFO  L226             Difference]: Without dead ends: 68
[2020-08-22 23:00:27,415 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-22 23:00:27,437 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2020-08-22 23:00:27,467 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2020-08-22 23:00:27,468 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2020-08-22 23:00:27,470 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions.
[2020-08-22 23:00:27,472 INFO  L78                 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 33
[2020-08-22 23:00:27,473 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 23:00:27,473 INFO  L479      AbstractCegarLoop]: Abstraction has 68 states and 72 transitions.
[2020-08-22 23:00:27,473 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-22 23:00:27,474 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions.
[2020-08-22 23:00:27,475 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-08-22 23:00:27,475 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 23:00:27,476 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]
[2020-08-22 23:00:27,476 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 23:00:27,476 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 23:00:27,477 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 23:00:27,477 INFO  L82        PathProgramCache]: Analyzing trace with hash 1688115303, now seen corresponding path program 1 times
[2020-08-22 23:00:27,477 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 23:00:27,478 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332653224]
[2020-08-22 23:00:27,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 23:00:27,512 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 23:00:27,613 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 23:00:27,617 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 23:00:27,626 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12
[2020-08-22 23:00:27,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 23:00:27,637 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 23:00:27,638 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332653224]
[2020-08-22 23:00:27,638 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 23:00:27,638 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-22 23:00:27,639 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603044018]
[2020-08-22 23:00:27,641 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-22 23:00:27,641 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 23:00:27,642 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-22 23:00:27,642 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-22 23:00:27,642 INFO  L87              Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states.
[2020-08-22 23:00:27,930 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 23:00:27,931 INFO  L93              Difference]: Finished difference Result 142 states and 154 transitions.
[2020-08-22 23:00:27,931 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-08-22 23:00:27,932 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 33
[2020-08-22 23:00:27,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 23:00:27,934 INFO  L225             Difference]: With dead ends: 142
[2020-08-22 23:00:27,934 INFO  L226             Difference]: Without dead ends: 102
[2020-08-22 23:00:27,936 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2020-08-22 23:00:27,936 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2020-08-22 23:00:27,951 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 71.
[2020-08-22 23:00:27,952 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2020-08-22 23:00:27,953 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions.
[2020-08-22 23:00:27,953 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 33
[2020-08-22 23:00:27,954 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-22 23:00:27,954 INFO  L479      AbstractCegarLoop]: Abstraction has 71 states and 75 transitions.
[2020-08-22 23:00:27,954 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-22 23:00:27,954 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions.
[2020-08-22 23:00:27,956 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2020-08-22 23:00:27,956 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 23:00:27,957 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, 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]
[2020-08-22 23:00:27,957 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-22 23:00:27,957 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 23:00:27,957 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 23:00:27,958 INFO  L82        PathProgramCache]: Analyzing trace with hash -1790069826, now seen corresponding path program 1 times
[2020-08-22 23:00:27,958 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 23:00:27,958 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1997229621]
[2020-08-22 23:00:27,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 23:00:28,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 23:00:28,007 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 23:00:28,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 23:00:28,054 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 23:00:28,093 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-22 23:00:28,093 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-22 23:00:28,093 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-22 23:00:28,197 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:00:28 BoogieIcfgContainer
[2020-08-22 23:00:28,197 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-22 23:00:28,201 INFO  L168              Benchmark]: Toolchain (without parser) took 2320.81 ms. Allocated memory was 138.4 MB in the beginning and 233.8 MB in the end (delta: 95.4 MB). Free memory was 102.1 MB in the beginning and 186.2 MB in the end (delta: -84.2 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB.
[2020-08-22 23:00:28,202 INFO  L168              Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
[2020-08-22 23:00:28,203 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 279.26 ms. Allocated memory is still 138.4 MB. Free memory was 101.9 MB in the beginning and 91.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB.
[2020-08-22 23:00:28,204 INFO  L168              Benchmark]: Boogie Preprocessor took 138.43 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 178.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
[2020-08-22 23:00:28,205 INFO  L168              Benchmark]: RCFGBuilder took 437.76 ms. Allocated memory is still 201.9 MB. Free memory was 178.7 MB in the beginning and 156.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB.
[2020-08-22 23:00:28,206 INFO  L168              Benchmark]: TraceAbstraction took 1459.85 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.7 MB in the beginning and 186.2 MB in the end (delta: -29.6 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB.
[2020-08-22 23:00:28,211 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 279.26 ms. Allocated memory is still 138.4 MB. Free memory was 101.9 MB in the beginning and 91.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 138.43 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 178.7 MB in the end (delta: -87.4 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 437.76 ms. Allocated memory is still 201.9 MB. Free memory was 178.7 MB in the beginning and 156.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 1459.85 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 156.7 MB in the beginning and 186.2 MB in the end (delta: -29.6 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L17]              int N;
       VAL         [\old(N)=10, N=0]
[L21]              N = __VERIFIER_nondet_int()
       VAL         [\old(N)=0, __VERIFIER_nondet_int()=1, N=1]
[L22]  COND FALSE  !(N <= 0)
       VAL         [\old(N)=0, N=1]
[L23]  CALL        assume_abort_if_not(N <= 2147483647/sizeof(int))
       VAL         [\old(cond)=1, \old(N)=0, N=1]
[L11]  COND FALSE  !(!cond)
       VAL         [\old(cond)=1, \old(N)=0, cond=1, N=1]
[L23]  RET         assume_abort_if_not(N <= 2147483647/sizeof(int))
       VAL         [\old(N)=0, N=1]
[L25]              int i;
       VAL         [\old(N)=0, N=1]
[L26]              long long sum[1];
       VAL         [\old(N)=0, N=1, sum={5:0}]
[L27]              int *a = malloc(sizeof(int)*N);
       VAL         [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L29]              sum[0] = 1
       VAL         [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L30]              i=0
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L30]  COND TRUE   i<N
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L32]              a[i] = 1
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L30]              i++
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L30]  COND FALSE  !(i<N)
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L35]              i=0
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L35]  COND TRUE   i<N
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L37]  EXPR        a[i]
       VAL         [\old(N)=0, a={-1:0}, a[i]=1, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L37]  COND TRUE   a[i] == 1
       VAL         [\old(N)=0, a={-1:0}, a[i]=1, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L38]  EXPR        a[i]
       VAL         [\old(N)=0, a={-1:0}, a[i]=1, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L38]              a[i] = a[i] + 1
       VAL         [\old(N)=0, a={-1:0}, a[i]=1, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L35]              i++
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L35]  COND FALSE  !(i<N)
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L44]              i=0
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L44]  COND TRUE   i<N
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L46]  EXPR        a[i]
       VAL         [\old(N)=0, a={-1:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L46]  COND TRUE   a[i] == 2
       VAL         [\old(N)=0, a={-1:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L47]  EXPR        sum[0]
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}, sum[0]=1]
[L47]  EXPR        a[i]
       VAL         [\old(N)=0, a={-1:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}, sum[0]=1]
[L47]              sum[0] = sum[0] + a[i]
       VAL         [\old(N)=0, a={-1:0}, a[i]=2, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}, sum[0]=1]
[L44]              i++
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L44]  COND FALSE  !(i<N)
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}]
[L53]  EXPR        sum[0]
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={5:0}, sum[0]=3]
[L53]  CALL        __VERIFIER_assert(sum[0] == 2*N)
       VAL         [\old(cond)=0, \old(N)=0, N=1]
[L13]  COND TRUE   !(cond)
       VAL         [\old(cond)=0, \old(N)=0, cond=0, N=1]
[L13]              __VERIFIER_error()
       VAL         [\old(cond)=0, \old(N)=0, cond=0, N=1]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 5 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 105 SDslu, 49 SDs, 0 SdLazy, 183 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred 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, 31 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 64 ConstructedInterpolants, 0 QuantifiedInterpolants, 3456 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...