/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/brs2f.c


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


This is Ultimate 0.1.25-267fbe0
[2020-07-18 00:47:09,018 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-18 00:47:09,021 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
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[2020-07-18 00:47:09,041 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-18 00:47:09,043 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-07-18 00:47:09,074 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2020-07-18 00:47:09,107 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-07-18 00:47:09,132 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-18 00:47:09,132 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-18 00:47:09,134 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-18 00:47:09,135 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-18 00:47:09,135 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-18 00:47:09,135 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-18 00:47:09,135 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-18 00:47:09,135 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-18 00:47:09,136 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-18 00:47:09,136 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-18 00:47:09,137 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-18 00:47:09,137 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-18 00:47:09,137 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-18 00:47:09,137 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-18 00:47:09,140 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-18 00:47:09,140 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-07-18 00:47:09,140 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-18 00:47:09,140 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-18 00:47:09,140 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-18 00:47:09,142 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-18 00:47:09,142 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-07-18 00:47:09,144 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-18 00:47:09,144 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
[2020-07-18 00:47:09,466 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-18 00:47:09,479 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-18 00:47:09,483 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-18 00:47:09,484 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-18 00:47:09,485 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-18 00:47:09,486 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs2f.c
[2020-07-18 00:47:09,559 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c5bb059/ef44c6d6070d4707a765b9b600485359/FLAG1ce22f34c
[2020-07-18 00:47:10,001 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-18 00:47:10,002 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs2f.c
[2020-07-18 00:47:10,010 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c5bb059/ef44c6d6070d4707a765b9b600485359/FLAG1ce22f34c
[2020-07-18 00:47:10,355 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22c5bb059/ef44c6d6070d4707a765b9b600485359
[2020-07-18 00:47:10,366 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-18 00:47:10,369 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-18 00:47:10,370 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-18 00:47:10,370 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-18 00:47:10,374 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-18 00:47:10,376 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:10" (1/1) ...
[2020-07-18 00:47:10,379 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ac0970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10, skipping insertion in model container
[2020-07-18 00:47:10,379 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.07 12:47:10" (1/1) ...
[2020-07-18 00:47:10,388 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-18 00:47:10,406 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-18 00:47:10,594 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-18 00:47:10,605 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-18 00:47:10,630 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-18 00:47:10,646 INFO  L208         MainTranslator]: Completed translation
[2020-07-18 00:47:10,647 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10 WrapperNode
[2020-07-18 00:47:10,647 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-18 00:47:10,647 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-18 00:47:10,648 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-18 00:47:10,648 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-18 00:47:10,748 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10" (1/1) ...
[2020-07-18 00:47:10,748 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10" (1/1) ...
[2020-07-18 00:47:10,758 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10" (1/1) ...
[2020-07-18 00:47:10,759 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10" (1/1) ...
[2020-07-18 00:47:10,770 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10" (1/1) ...
[2020-07-18 00:47:10,777 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10" (1/1) ...
[2020-07-18 00:47:10,778 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10" (1/1) ...
[2020-07-18 00:47:10,781 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-18 00:47:10,781 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-18 00:47:10,782 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-18 00:47:10,782 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-18 00:47:10,783 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10" (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
[2020-07-18 00:47:10,844 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-18 00:47:10,844 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-18 00:47:10,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-18 00:47:10,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-18 00:47:10,845 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-18 00:47:10,845 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-18 00:47:10,845 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-07-18 00:47:10,845 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-18 00:47:10,845 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-18 00:47:10,845 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-18 00:47:10,845 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-07-18 00:47:10,846 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-18 00:47:10,846 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-18 00:47:10,846 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-18 00:47:10,846 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-07-18 00:47:10,846 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-07-18 00:47:10,846 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-18 00:47:10,847 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-18 00:47:10,847 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-18 00:47:11,310 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-18 00:47:11,311 INFO  L295             CfgBuilder]: Removed 2 assume(true) statements.
[2020-07-18 00:47:11,315 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:11 BoogieIcfgContainer
[2020-07-18 00:47:11,316 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-18 00:47:11,317 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-18 00:47:11,317 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-18 00:47:11,321 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-18 00:47:11,321 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.07 12:47:10" (1/3) ...
[2020-07-18 00:47:11,322 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57845847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:11, skipping insertion in model container
[2020-07-18 00:47:11,322 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.07 12:47:10" (2/3) ...
[2020-07-18 00:47:11,323 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57845847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.07 12:47:11, skipping insertion in model container
[2020-07-18 00:47:11,323 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.07 12:47:11" (3/3) ...
[2020-07-18 00:47:11,325 INFO  L109   eAbstractionObserver]: Analyzing ICFG brs2f.c
[2020-07-18 00:47:11,336 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-07-18 00:47:11,345 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-18 00:47:11,360 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-18 00:47:11,383 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-18 00:47:11,383 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-18 00:47:11,384 INFO  L377      AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-07-18 00:47:11,384 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-18 00:47:11,384 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-18 00:47:11,384 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-18 00:47:11,384 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-18 00:47:11,385 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-18 00:47:11,400 INFO  L276                IsEmpty]: Start isEmpty. Operand 59 states.
[2020-07-18 00:47:11,415 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-07-18 00:47:11,415 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-18 00:47:11,416 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]
[2020-07-18 00:47:11,417 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-18 00:47:11,424 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-18 00:47:11,424 INFO  L82        PathProgramCache]: Analyzing trace with hash 221259408, now seen corresponding path program 1 times
[2020-07-18 00:47:11,434 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-18 00:47:11,434 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491662408]
[2020-07-18 00:47:11,435 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-07-18 00:47:11,556 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 00:47:11,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 00:47:11,702 INFO  L280        TraceCheckUtils]: 0: Hoare triple {74#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {62#true} is VALID
[2020-07-18 00:47:11,702 INFO  L280        TraceCheckUtils]: 1: Hoare triple {62#true} #valid := #valid[0 := 0]; {62#true} is VALID
[2020-07-18 00:47:11,703 INFO  L280        TraceCheckUtils]: 2: Hoare triple {62#true} assume 0 < #StackHeapBarrier; {62#true} is VALID
[2020-07-18 00:47:11,703 INFO  L280        TraceCheckUtils]: 3: Hoare triple {62#true} ~N~0 := 0; {62#true} is VALID
[2020-07-18 00:47:11,704 INFO  L280        TraceCheckUtils]: 4: Hoare triple {62#true} assume true; {62#true} is VALID
[2020-07-18 00:47:11,705 INFO  L275        TraceCheckUtils]: 5: Hoare quadruple {62#true} {62#true} #103#return; {62#true} is VALID
[2020-07-18 00:47:11,708 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 00:47:11,715 INFO  L280        TraceCheckUtils]: 0: Hoare triple {62#true} ~cond := #in~cond; {62#true} is VALID
[2020-07-18 00:47:11,716 INFO  L280        TraceCheckUtils]: 1: Hoare triple {62#true} assume !(0 == ~cond); {62#true} is VALID
[2020-07-18 00:47:11,716 INFO  L280        TraceCheckUtils]: 2: Hoare triple {62#true} assume true; {62#true} is VALID
[2020-07-18 00:47:11,716 INFO  L275        TraceCheckUtils]: 3: Hoare quadruple {62#true} {62#true} #99#return; {62#true} is VALID
[2020-07-18 00:47:11,719 INFO  L263        TraceCheckUtils]: 0: Hoare triple {62#true} call ULTIMATE.init(); {74#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID
[2020-07-18 00:47:11,719 INFO  L280        TraceCheckUtils]: 1: Hoare triple {74#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {62#true} is VALID
[2020-07-18 00:47:11,720 INFO  L280        TraceCheckUtils]: 2: Hoare triple {62#true} #valid := #valid[0 := 0]; {62#true} is VALID
[2020-07-18 00:47:11,720 INFO  L280        TraceCheckUtils]: 3: Hoare triple {62#true} assume 0 < #StackHeapBarrier; {62#true} is VALID
[2020-07-18 00:47:11,720 INFO  L280        TraceCheckUtils]: 4: Hoare triple {62#true} ~N~0 := 0; {62#true} is VALID
[2020-07-18 00:47:11,721 INFO  L280        TraceCheckUtils]: 5: Hoare triple {62#true} assume true; {62#true} is VALID
[2020-07-18 00:47:11,721 INFO  L275        TraceCheckUtils]: 6: Hoare quadruple {62#true} {62#true} #103#return; {62#true} is VALID
[2020-07-18 00:47:11,722 INFO  L263        TraceCheckUtils]: 7: Hoare triple {62#true} call #t~ret7 := main(); {62#true} is VALID
[2020-07-18 00:47:11,722 INFO  L280        TraceCheckUtils]: 8: Hoare triple {62#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {62#true} is VALID
[2020-07-18 00:47:11,723 INFO  L280        TraceCheckUtils]: 9: Hoare triple {62#true} ~N~0 := #t~nondet0; {62#true} is VALID
[2020-07-18 00:47:11,723 INFO  L280        TraceCheckUtils]: 10: Hoare triple {62#true} havoc #t~nondet0; {62#true} is VALID
[2020-07-18 00:47:11,724 INFO  L280        TraceCheckUtils]: 11: Hoare triple {62#true} assume !(~N~0 <= 0); {62#true} is VALID
[2020-07-18 00:47:11,724 INFO  L263        TraceCheckUtils]: 12: Hoare triple {62#true} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {62#true} is VALID
[2020-07-18 00:47:11,724 INFO  L280        TraceCheckUtils]: 13: Hoare triple {62#true} ~cond := #in~cond; {62#true} is VALID
[2020-07-18 00:47:11,725 INFO  L280        TraceCheckUtils]: 14: Hoare triple {62#true} assume !(0 == ~cond); {62#true} is VALID
[2020-07-18 00:47:11,725 INFO  L280        TraceCheckUtils]: 15: Hoare triple {62#true} assume true; {62#true} is VALID
[2020-07-18 00:47:11,726 INFO  L275        TraceCheckUtils]: 16: Hoare quadruple {62#true} {62#true} #99#return; {62#true} is VALID
[2020-07-18 00:47:11,726 INFO  L280        TraceCheckUtils]: 17: Hoare triple {62#true} havoc ~i~0; {62#true} is VALID
[2020-07-18 00:47:11,727 INFO  L280        TraceCheckUtils]: 18: Hoare triple {62#true} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {62#true} is VALID
[2020-07-18 00:47:11,727 INFO  L280        TraceCheckUtils]: 19: Hoare triple {62#true} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {62#true} is VALID
[2020-07-18 00:47:11,727 INFO  L280        TraceCheckUtils]: 20: Hoare triple {62#true} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {62#true} is VALID
[2020-07-18 00:47:11,728 INFO  L280        TraceCheckUtils]: 21: Hoare triple {62#true} ~i~0 := 0; {62#true} is VALID
[2020-07-18 00:47:11,729 INFO  L280        TraceCheckUtils]: 22: Hoare triple {62#true} assume !true; {63#false} is VALID
[2020-07-18 00:47:11,730 INFO  L280        TraceCheckUtils]: 23: Hoare triple {63#false} ~i~0 := 0; {63#false} is VALID
[2020-07-18 00:47:11,730 INFO  L280        TraceCheckUtils]: 24: Hoare triple {63#false} assume !(~i~0 < ~N~0); {63#false} is VALID
[2020-07-18 00:47:11,731 INFO  L280        TraceCheckUtils]: 25: Hoare triple {63#false} SUMMARY for call #t~mem6 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L38-6 {63#false} is VALID
[2020-07-18 00:47:11,731 INFO  L263        TraceCheckUtils]: 26: Hoare triple {63#false} call __VERIFIER_assert((if #t~mem6 <= 2 * ~N~0 then 1 else 0)); {63#false} is VALID
[2020-07-18 00:47:11,731 INFO  L280        TraceCheckUtils]: 27: Hoare triple {63#false} ~cond := #in~cond; {63#false} is VALID
[2020-07-18 00:47:11,732 INFO  L280        TraceCheckUtils]: 28: Hoare triple {63#false} assume 0 == ~cond; {63#false} is VALID
[2020-07-18 00:47:11,732 INFO  L280        TraceCheckUtils]: 29: Hoare triple {63#false} assume !false; {63#false} is VALID
[2020-07-18 00:47:11,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-18 00:47:11,739 INFO  L192   leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration
[2020-07-18 00:47:11,741 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491662408]
[2020-07-18 00:47:11,744 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-18 00:47:11,744 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-18 00:47:11,745 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834682984]
[2020-07-18 00:47:11,752 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 30
[2020-07-18 00:47:11,756 INFO  L84                 Accepts]: Finished accepts. word is accepted.
[2020-07-18 00:47:11,760 INFO  L86        InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states.
[2020-07-18 00:47:11,815 INFO  L119       InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 
[2020-07-18 00:47:11,815 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-18 00:47:11,815 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-18 00:47:11,825 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-18 00:47:11,826 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-18 00:47:11,829 INFO  L87              Difference]: Start difference. First operand 59 states. Second operand 3 states.
[2020-07-18 00:47:12,213 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 00:47:12,214 INFO  L93              Difference]: Finished difference Result 101 states and 116 transitions.
[2020-07-18 00:47:12,214 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-18 00:47:12,214 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 30
[2020-07-18 00:47:12,214 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-18 00:47:12,216 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2020-07-18 00:47:12,228 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions.
[2020-07-18 00:47:12,229 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2020-07-18 00:47:12,235 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions.
[2020-07-18 00:47:12,235 INFO  L86        InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 116 transitions.
[2020-07-18 00:47:12,407 INFO  L119       InductivityCheck]: Floyd-Hoare automaton has 116 edges. 116 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 
[2020-07-18 00:47:12,438 INFO  L225             Difference]: With dead ends: 101
[2020-07-18 00:47:12,438 INFO  L226             Difference]: Without dead ends: 47
[2020-07-18 00:47:12,444 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-18 00:47:12,460 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2020-07-18 00:47:12,529 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47.
[2020-07-18 00:47:12,530 INFO  L214    AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa
[2020-07-18 00:47:12,531 INFO  L82        GeneralOperation]: Start isEquivalent. First operand 47 states. Second operand 47 states.
[2020-07-18 00:47:12,532 INFO  L74              IsIncluded]: Start isIncluded. First operand 47 states. Second operand 47 states.
[2020-07-18 00:47:12,532 INFO  L87              Difference]: Start difference. First operand 47 states. Second operand 47 states.
[2020-07-18 00:47:12,537 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 00:47:12,538 INFO  L93              Difference]: Finished difference Result 47 states and 50 transitions.
[2020-07-18 00:47:12,538 INFO  L276                IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions.
[2020-07-18 00:47:12,539 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-18 00:47:12,539 INFO  L83              IsIncluded]: Finished isIncluded. Language is included
[2020-07-18 00:47:12,539 INFO  L74              IsIncluded]: Start isIncluded. First operand 47 states. Second operand 47 states.
[2020-07-18 00:47:12,540 INFO  L87              Difference]: Start difference. First operand 47 states. Second operand 47 states.
[2020-07-18 00:47:12,545 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 00:47:12,545 INFO  L93              Difference]: Finished difference Result 47 states and 50 transitions.
[2020-07-18 00:47:12,545 INFO  L276                IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions.
[2020-07-18 00:47:12,546 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-18 00:47:12,547 INFO  L83              IsIncluded]: Finished isIncluded. Language is included
[2020-07-18 00:47:12,547 INFO  L88        GeneralOperation]: Finished isEquivalent.
[2020-07-18 00:47:12,547 INFO  L221    AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa
[2020-07-18 00:47:12,548 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2020-07-18 00:47:12,551 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 50 transitions.
[2020-07-18 00:47:12,553 INFO  L78                 Accepts]: Start accepts. Automaton has 47 states and 50 transitions. Word has length 30
[2020-07-18 00:47:12,553 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-18 00:47:12,554 INFO  L479      AbstractCegarLoop]: Abstraction has 47 states and 50 transitions.
[2020-07-18 00:47:12,554 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-18 00:47:12,554 INFO  L86        InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 47 states and 50 transitions.
[2020-07-18 00:47:12,620 INFO  L119       InductivityCheck]: Floyd-Hoare automaton has 50 edges. 50 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 
[2020-07-18 00:47:12,620 INFO  L276                IsEmpty]: Start isEmpty. Operand 47 states and 50 transitions.
[2020-07-18 00:47:12,622 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-07-18 00:47:12,622 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-18 00:47:12,622 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]
[2020-07-18 00:47:12,623 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-07-18 00:47:12,623 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-18 00:47:12,623 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-18 00:47:12,624 INFO  L82        PathProgramCache]: Analyzing trace with hash -151091841, now seen corresponding path program 1 times
[2020-07-18 00:47:12,624 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-18 00:47:12,624 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220783274]
[2020-07-18 00:47:12,625 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-07-18 00:47:12,653 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 00:47:12,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 00:47:12,778 INFO  L280        TraceCheckUtils]: 0: Hoare triple {481#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {467#true} is VALID
[2020-07-18 00:47:12,778 INFO  L280        TraceCheckUtils]: 1: Hoare triple {467#true} #valid := #valid[0 := 0]; {467#true} is VALID
[2020-07-18 00:47:12,779 INFO  L280        TraceCheckUtils]: 2: Hoare triple {467#true} assume 0 < #StackHeapBarrier; {467#true} is VALID
[2020-07-18 00:47:12,779 INFO  L280        TraceCheckUtils]: 3: Hoare triple {467#true} ~N~0 := 0; {467#true} is VALID
[2020-07-18 00:47:12,780 INFO  L280        TraceCheckUtils]: 4: Hoare triple {467#true} assume true; {467#true} is VALID
[2020-07-18 00:47:12,780 INFO  L275        TraceCheckUtils]: 5: Hoare quadruple {467#true} {467#true} #103#return; {467#true} is VALID
[2020-07-18 00:47:12,788 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-18 00:47:12,798 INFO  L280        TraceCheckUtils]: 0: Hoare triple {467#true} ~cond := #in~cond; {467#true} is VALID
[2020-07-18 00:47:12,799 INFO  L280        TraceCheckUtils]: 1: Hoare triple {467#true} assume !(0 == ~cond); {467#true} is VALID
[2020-07-18 00:47:12,799 INFO  L280        TraceCheckUtils]: 2: Hoare triple {467#true} assume true; {467#true} is VALID
[2020-07-18 00:47:12,801 INFO  L275        TraceCheckUtils]: 3: Hoare quadruple {467#true} {475#(<= 1 ~N~0)} #99#return; {475#(<= 1 ~N~0)} is VALID
[2020-07-18 00:47:12,806 INFO  L263        TraceCheckUtils]: 0: Hoare triple {467#true} call ULTIMATE.init(); {481#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID
[2020-07-18 00:47:12,807 INFO  L280        TraceCheckUtils]: 1: Hoare triple {481#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= ~N~0 |old(~N~0)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0; {467#true} is VALID
[2020-07-18 00:47:12,807 INFO  L280        TraceCheckUtils]: 2: Hoare triple {467#true} #valid := #valid[0 := 0]; {467#true} is VALID
[2020-07-18 00:47:12,808 INFO  L280        TraceCheckUtils]: 3: Hoare triple {467#true} assume 0 < #StackHeapBarrier; {467#true} is VALID
[2020-07-18 00:47:12,808 INFO  L280        TraceCheckUtils]: 4: Hoare triple {467#true} ~N~0 := 0; {467#true} is VALID
[2020-07-18 00:47:12,808 INFO  L280        TraceCheckUtils]: 5: Hoare triple {467#true} assume true; {467#true} is VALID
[2020-07-18 00:47:12,809 INFO  L275        TraceCheckUtils]: 6: Hoare quadruple {467#true} {467#true} #103#return; {467#true} is VALID
[2020-07-18 00:47:12,809 INFO  L263        TraceCheckUtils]: 7: Hoare triple {467#true} call #t~ret7 := main(); {467#true} is VALID
[2020-07-18 00:47:12,809 INFO  L280        TraceCheckUtils]: 8: Hoare triple {467#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {467#true} is VALID
[2020-07-18 00:47:12,810 INFO  L280        TraceCheckUtils]: 9: Hoare triple {467#true} ~N~0 := #t~nondet0; {467#true} is VALID
[2020-07-18 00:47:12,810 INFO  L280        TraceCheckUtils]: 10: Hoare triple {467#true} havoc #t~nondet0; {467#true} is VALID
[2020-07-18 00:47:12,811 INFO  L280        TraceCheckUtils]: 11: Hoare triple {467#true} assume !(~N~0 <= 0); {475#(<= 1 ~N~0)} is VALID
[2020-07-18 00:47:12,811 INFO  L263        TraceCheckUtils]: 12: Hoare triple {475#(<= 1 ~N~0)} call assume_abort_if_not((if ~N~0 <= 536870911 then 1 else 0)); {467#true} is VALID
[2020-07-18 00:47:12,812 INFO  L280        TraceCheckUtils]: 13: Hoare triple {467#true} ~cond := #in~cond; {467#true} is VALID
[2020-07-18 00:47:12,812 INFO  L280        TraceCheckUtils]: 14: Hoare triple {467#true} assume !(0 == ~cond); {467#true} is VALID
[2020-07-18 00:47:12,812 INFO  L280        TraceCheckUtils]: 15: Hoare triple {467#true} assume true; {467#true} is VALID
[2020-07-18 00:47:12,815 INFO  L275        TraceCheckUtils]: 16: Hoare quadruple {467#true} {475#(<= 1 ~N~0)} #99#return; {475#(<= 1 ~N~0)} is VALID
[2020-07-18 00:47:12,816 INFO  L280        TraceCheckUtils]: 17: Hoare triple {475#(<= 1 ~N~0)} havoc ~i~0; {475#(<= 1 ~N~0)} is VALID
[2020-07-18 00:47:12,817 INFO  L280        TraceCheckUtils]: 18: Hoare triple {475#(<= 1 ~N~0)} SUMMARY for call ~#sum~0.base, ~#sum~0.offset := #Ultimate.allocOnStack(8); srcloc: L26 {475#(<= 1 ~N~0)} is VALID
[2020-07-18 00:47:12,817 INFO  L280        TraceCheckUtils]: 19: Hoare triple {475#(<= 1 ~N~0)} SUMMARY for call #t~malloc1.base, #t~malloc1.offset := #Ultimate.allocOnHeap(4 * ~N~0); srcloc: L26-1 {475#(<= 1 ~N~0)} is VALID
[2020-07-18 00:47:12,818 INFO  L280        TraceCheckUtils]: 20: Hoare triple {475#(<= 1 ~N~0)} ~a~0.base, ~a~0.offset := #t~malloc1.base, #t~malloc1.offset; {475#(<= 1 ~N~0)} is VALID
[2020-07-18 00:47:12,819 INFO  L280        TraceCheckUtils]: 21: Hoare triple {475#(<= 1 ~N~0)} ~i~0 := 0; {480#(and (= 0 main_~i~0) (<= 1 ~N~0))} is VALID
[2020-07-18 00:47:12,820 INFO  L280        TraceCheckUtils]: 22: Hoare triple {480#(and (= 0 main_~i~0) (<= 1 ~N~0))} assume !(~i~0 < ~N~0); {468#false} is VALID
[2020-07-18 00:47:12,820 INFO  L280        TraceCheckUtils]: 23: Hoare triple {468#false} ~i~0 := 0; {468#false} is VALID
[2020-07-18 00:47:12,821 INFO  L280        TraceCheckUtils]: 24: Hoare triple {468#false} assume !(~i~0 < ~N~0); {468#false} is VALID
[2020-07-18 00:47:12,821 INFO  L280        TraceCheckUtils]: 25: Hoare triple {468#false} SUMMARY for call #t~mem6 := read~int(~#sum~0.base, ~#sum~0.offset, 8); srcloc: L38-6 {468#false} is VALID
[2020-07-18 00:47:12,821 INFO  L263        TraceCheckUtils]: 26: Hoare triple {468#false} call __VERIFIER_assert((if #t~mem6 <= 2 * ~N~0 then 1 else 0)); {468#false} is VALID
[2020-07-18 00:47:12,822 INFO  L280        TraceCheckUtils]: 27: Hoare triple {468#false} ~cond := #in~cond; {468#false} is VALID
[2020-07-18 00:47:12,822 INFO  L280        TraceCheckUtils]: 28: Hoare triple {468#false} assume 0 == ~cond; {468#false} is VALID
[2020-07-18 00:47:12,823 INFO  L280        TraceCheckUtils]: 29: Hoare triple {468#false} assume !false; {468#false} is VALID
[2020-07-18 00:47:12,825 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-18 00:47:12,832 INFO  L192   leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration
[2020-07-18 00:47:12,833 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220783274]
[2020-07-18 00:47:12,833 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-18 00:47:12,833 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-07-18 00:47:12,834 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67443786]
[2020-07-18 00:47:12,835 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 30
[2020-07-18 00:47:12,836 INFO  L84                 Accepts]: Finished accepts. word is accepted.
[2020-07-18 00:47:12,836 INFO  L86        InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states.
[2020-07-18 00:47:12,886 INFO  L119       InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 
[2020-07-18 00:47:12,886 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-07-18 00:47:12,887 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-18 00:47:12,887 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-07-18 00:47:12,887 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-07-18 00:47:12,888 INFO  L87              Difference]: Start difference. First operand 47 states and 50 transitions. Second operand 5 states.
[2020-07-18 00:47:13,296 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 00:47:13,296 INFO  L93              Difference]: Finished difference Result 81 states and 91 transitions.
[2020-07-18 00:47:13,297 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-07-18 00:47:13,297 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 30
[2020-07-18 00:47:13,297 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-18 00:47:13,297 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2020-07-18 00:47:13,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions.
[2020-07-18 00:47:13,301 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2020-07-18 00:47:13,305 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions.
[2020-07-18 00:47:13,305 INFO  L86        InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 91 transitions.
[2020-07-18 00:47:13,408 INFO  L119       InductivityCheck]: Floyd-Hoare automaton has 91 edges. 91 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 
[2020-07-18 00:47:13,410 INFO  L225             Difference]: With dead ends: 81
[2020-07-18 00:47:13,411 INFO  L226             Difference]: Without dead ends: 56
[2020-07-18 00:47:13,413 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2020-07-18 00:47:13,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2020-07-18 00:47:13,504 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51.
[2020-07-18 00:47:13,504 INFO  L214    AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa
[2020-07-18 00:47:13,505 INFO  L82        GeneralOperation]: Start isEquivalent. First operand 56 states. Second operand 51 states.
[2020-07-18 00:47:13,505 INFO  L74              IsIncluded]: Start isIncluded. First operand 56 states. Second operand 51 states.
[2020-07-18 00:47:13,505 INFO  L87              Difference]: Start difference. First operand 56 states. Second operand 51 states.
[2020-07-18 00:47:13,509 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 00:47:13,509 INFO  L93              Difference]: Finished difference Result 56 states and 59 transitions.
[2020-07-18 00:47:13,510 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions.
[2020-07-18 00:47:13,510 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-18 00:47:13,511 INFO  L83              IsIncluded]: Finished isIncluded. Language is included
[2020-07-18 00:47:13,511 INFO  L74              IsIncluded]: Start isIncluded. First operand 51 states. Second operand 56 states.
[2020-07-18 00:47:13,511 INFO  L87              Difference]: Start difference. First operand 51 states. Second operand 56 states.
[2020-07-18 00:47:13,514 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-18 00:47:13,515 INFO  L93              Difference]: Finished difference Result 56 states and 59 transitions.
[2020-07-18 00:47:13,515 INFO  L276                IsEmpty]: Start isEmpty. Operand 56 states and 59 transitions.
[2020-07-18 00:47:13,516 INFO  L282                IsEmpty]: Finished isEmpty. No accepting run.
[2020-07-18 00:47:13,516 INFO  L83              IsIncluded]: Finished isIncluded. Language is included
[2020-07-18 00:47:13,516 INFO  L88        GeneralOperation]: Finished isEquivalent.
[2020-07-18 00:47:13,516 INFO  L221    AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa
[2020-07-18 00:47:13,516 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 51 states.
[2020-07-18 00:47:13,519 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 54 transitions.
[2020-07-18 00:47:13,520 INFO  L78                 Accepts]: Start accepts. Automaton has 51 states and 54 transitions. Word has length 30
[2020-07-18 00:47:13,520 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-18 00:47:13,520 INFO  L479      AbstractCegarLoop]: Abstraction has 51 states and 54 transitions.
[2020-07-18 00:47:13,520 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-07-18 00:47:13,520 INFO  L86        InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 51 states and 54 transitions.
[2020-07-18 00:47:13,583 INFO  L119       InductivityCheck]: Floyd-Hoare automaton has 54 edges. 54 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 
[2020-07-18 00:47:13,584 INFO  L276                IsEmpty]: Start isEmpty. Operand 51 states and 54 transitions.
[2020-07-18 00:47:13,585 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2020-07-18 00:47:13,585 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-18 00:47:13,585 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]
[2020-07-18 00:47:13,586 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-07-18 00:47:13,586 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-18 00:47:13,586 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-18 00:47:13,586 INFO  L82        PathProgramCache]: Analyzing trace with hash 1707000309, now seen corresponding path program 1 times
[2020-07-18 00:47:13,587 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-18 00:47:13,587 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391026888]
[2020-07-18 00:47:13,587 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-07-18 00:47:13,623 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-07-18 00:47:13,624 FATAL L?                        ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception:
java.lang.NullPointerException
	at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458)
	at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290)
	at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.<init>(AcceleratedInterpolation.java:191)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.<init>(AutomatonFreeRefinementEngine.java:85)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.<init>(TraceAbstractionRefinementEngine.java:75)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.<init>(TraceAbstractionStarter.java:127)
	at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317)
	at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145)
	at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
[2020-07-18 00:47:13,630 INFO  L168              Benchmark]: Toolchain (without parser) took 3261.95 ms. Allocated memory was 138.4 MB in the beginning and 245.4 MB in the end (delta: 107.0 MB). Free memory was 103.1 MB in the beginning and 150.9 MB in the end (delta: -47.7 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB.
[2020-07-18 00:47:13,631 INFO  L168              Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory is still 121.5 MB. There was no memory consumed. Max. memory is 7.1 GB.
[2020-07-18 00:47:13,632 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 277.16 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 92.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB.
[2020-07-18 00:47:13,633 INFO  L168              Benchmark]: Boogie Preprocessor took 133.52 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 92.1 MB in the beginning and 180.4 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB.
[2020-07-18 00:47:13,634 INFO  L168              Benchmark]: RCFGBuilder took 534.33 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 152.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB.
[2020-07-18 00:47:13,634 INFO  L168              Benchmark]: TraceAbstraction took 2310.10 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 152.1 MB in the beginning and 150.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB.
[2020-07-18 00:47:13,638 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - AssertionsEnabledResult: Assertions are enabled
    Assertions are enabled
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory is still 121.5 MB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 277.16 ms. Allocated memory is still 138.4 MB. Free memory was 102.7 MB in the beginning and 92.1 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 133.52 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 92.1 MB in the beginning and 180.4 MB in the end (delta: -88.3 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 534.33 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 152.1 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 2310.10 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 152.1 MB in the beginning and 150.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - ExceptionOrErrorResult: NullPointerException: null
    de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:458)
RESULT: Ultimate could not prove your program: Toolchain returned no result.
Received shutdown request...