/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/eqn4f.c


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


This is Ultimate 0.1.25-d623d84
[2020-07-21 01:38:19,311 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-21 01:38:19,314 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 01:38:19,333 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 01:38:19,333 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 01:38:19,334 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 01:38:19,336 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 01:38:19,338 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 01:38:19,339 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 01:38:19,340 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 01:38:19,341 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 01:38:19,342 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 01:38:19,343 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 01:38:19,344 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 01:38:19,345 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 01:38:19,346 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 01:38:19,347 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 01:38:19,348 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 01:38:19,350 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 01:38:19,352 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 01:38:19,353 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 01:38:19,354 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 01:38:19,355 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 01:38:19,356 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 01:38:19,359 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 01:38:19,359 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 01:38:19,360 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 01:38:19,360 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 01:38:19,361 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 01:38:19,362 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 01:38:19,362 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 01:38:19,363 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 01:38:19,363 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 01:38:19,364 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 01:38:19,365 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 01:38:19,365 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 01:38:19,366 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2020-07-21 01:38:19,366 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-07-21 01:38:19,368 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 01:38:19,369 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-21 01:38:19,385 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-21 01:38:19,385 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 01:38:19,386 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 01:38:19,387 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-21 01:38:19,387 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-21 01:38:19,387 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 01:38:19,387 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-21 01:38:19,387 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-21 01:38:19,388 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-21 01:38:19,388 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-21 01:38:19,388 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 01:38:19,388 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 01:38:19,388 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 01:38:19,389 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-21 01:38:19,389 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-21 01:38:19,389 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-21 01:38:19,389 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-21 01:38:19,389 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 01:38:19,390 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-21 01:38:19,390 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-21 01:38:19,390 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-21 01:38:19,390 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 01:38:19,390 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 01:38:19,391 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 01:38:19,391 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 01:38:19,391 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-21 01:38:19,391 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:38:19,392 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 01:38:19,392 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-21 01:38:19,392 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4
[2020-07-21 01:38:19,697 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 01:38:19,711 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 01:38:19,715 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 01:38:19,716 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-21 01:38:19,717 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-21 01:38:19,717 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/eqn4f.c
[2020-07-21 01:38:19,785 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbad21d74/78f0cf30184840bfac97e747fda78531/FLAG605684e54
[2020-07-21 01:38:20,279 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-21 01:38:20,280 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/eqn4f.c
[2020-07-21 01:38:20,287 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbad21d74/78f0cf30184840bfac97e747fda78531/FLAG605684e54
[2020-07-21 01:38:20,668 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbad21d74/78f0cf30184840bfac97e747fda78531
[2020-07-21 01:38:20,679 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 01:38:20,682 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 01:38:20,683 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 01:38:20,683 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 01:38:20,687 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 01:38:20,688 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:38:20" (1/1) ...
[2020-07-21 01:38:20,691 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@164c7927 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20, skipping insertion in model container
[2020-07-21 01:38:20,692 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:38:20" (1/1) ...
[2020-07-21 01:38:20,700 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-21 01:38:20,723 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-21 01:38:20,919 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 01:38:20,930 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-21 01:38:20,949 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-21 01:38:20,964 INFO  L208         MainTranslator]: Completed translation
[2020-07-21 01:38:20,964 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20 WrapperNode
[2020-07-21 01:38:20,964 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 01:38:20,965 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 01:38:20,965 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 01:38:20,965 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 01:38:21,065 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20" (1/1) ...
[2020-07-21 01:38:21,066 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20" (1/1) ...
[2020-07-21 01:38:21,074 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20" (1/1) ...
[2020-07-21 01:38:21,075 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20" (1/1) ...
[2020-07-21 01:38:21,082 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20" (1/1) ...
[2020-07-21 01:38:21,089 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20" (1/1) ...
[2020-07-21 01:38:21,095 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20" (1/1) ...
[2020-07-21 01:38:21,098 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 01:38:21,104 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 01:38:21,104 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 01:38:21,104 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-21 01:38:21,105 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20" (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
[2020-07-21 01:38:21,163 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 01:38:21,163 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 01:38:21,163 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-21 01:38:21,163 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-21 01:38:21,163 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 01:38:21,164 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 01:38:21,164 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-07-21 01:38:21,164 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-21 01:38:21,164 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-21 01:38:21,164 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-21 01:38:21,164 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-07-21 01:38:21,165 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-21 01:38:21,165 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-21 01:38:21,165 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 01:38:21,165 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 01:38:21,165 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 01:38:21,165 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 01:38:21,166 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 01:38:21,460 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 01:38:21,460 INFO  L295             CfgBuilder]: Removed 3 assume(true) statements.
[2020-07-21 01:38:21,465 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:38:21 BoogieIcfgContainer
[2020-07-21 01:38:21,465 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 01:38:21,466 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 01:38:21,466 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 01:38:21,469 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-21 01:38:21,469 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:38:20" (1/3) ...
[2020-07-21 01:38:21,470 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b103d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:38:21, skipping insertion in model container
[2020-07-21 01:38:21,470 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:38:20" (2/3) ...
[2020-07-21 01:38:21,471 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b103d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:38:21, skipping insertion in model container
[2020-07-21 01:38:21,471 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:38:21" (3/3) ...
[2020-07-21 01:38:21,473 INFO  L109   eAbstractionObserver]: Analyzing ICFG eqn4f.c
[2020-07-21 01:38:21,484 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 01:38:21,491 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 01:38:21,506 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 01:38:21,532 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-21 01:38:21,532 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-21 01:38:21,532 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 01:38:21,532 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 01:38:21,532 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 01:38:21,533 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-21 01:38:21,533 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 01:38:21,533 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 01:38:21,552 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states.
[2020-07-21 01:38:21,565 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-07-21 01:38:21,565 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 01:38:21,568 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 01:38:21,569 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 01:38:21,580 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 01:38:21,581 INFO  L82        PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times
[2020-07-21 01:38:21,588 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 01:38:21,589 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120168996]
[2020-07-21 01:38:21,589 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:38:21,707 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s)
[2020-07-21 01:38:21,708 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 01:38:21,713 INFO  L263         TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-21 01:38:21,720 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 01:38:21,743 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-21 01:38:21,743 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 01:38:21,747 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120168996]
[2020-07-21 01:38:21,750 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 01:38:21,751 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-21 01:38:21,753 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249301276]
[2020-07-21 01:38:21,759 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-21 01:38:21,759 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 01:38:21,771 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-21 01:38:21,772 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 01:38:21,774 INFO  L87              Difference]: Start difference. First operand 34 states. Second operand 2 states.
[2020-07-21 01:38:21,806 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 01:38:21,807 INFO  L93              Difference]: Finished difference Result 58 states and 73 transitions.
[2020-07-21 01:38:21,807 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-07-21 01:38:21,809 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 22
[2020-07-21 01:38:21,809 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 01:38:21,827 INFO  L225             Difference]: With dead ends: 58
[2020-07-21 01:38:21,828 INFO  L226             Difference]: Without dead ends: 29
[2020-07-21 01:38:21,832 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-21 01:38:21,862 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2020-07-21 01:38:21,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2020-07-21 01:38:21,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2020-07-21 01:38:21,905 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions.
[2020-07-21 01:38:21,907 INFO  L78                 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22
[2020-07-21 01:38:21,907 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-21 01:38:21,908 INFO  L479      AbstractCegarLoop]: Abstraction has 29 states and 31 transitions.
[2020-07-21 01:38:21,908 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-21 01:38:21,908 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions.
[2020-07-21 01:38:21,910 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-07-21 01:38:21,910 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-21 01:38:21,911 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-21 01:38:22,127 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:38:22,127 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 01:38:22,128 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 01:38:22,128 INFO  L82        PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times
[2020-07-21 01:38:22,129 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 01:38:22,130 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1027690363]
[2020-07-21 01:38:22,131 INFO  L95    rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions)
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:38:22,211 INFO  L228   tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s)
[2020-07-21 01:38:22,211 INFO  L229   tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-21 01:38:22,212 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 01:38:22,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 01:38:22,241 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 01:38:22,285 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 01:38:22,285 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 01:38:22,502 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 01:38:22,542 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:38:22 BoogieIcfgContainer
[2020-07-21 01:38:22,543 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 01:38:22,546 INFO  L168              Benchmark]: Toolchain (without parser) took 1864.07 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 101.3 MB in the beginning and 122.6 MB in the end (delta: -21.3 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB.
[2020-07-21 01:38:22,547 INFO  L168              Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
[2020-07-21 01:38:22,548 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 281.66 ms. Allocated memory is still 144.7 MB. Free memory was 100.9 MB in the beginning and 90.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
[2020-07-21 01:38:22,550 INFO  L168              Benchmark]: Boogie Preprocessor took 132.85 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 90.5 MB in the beginning and 178.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-07-21 01:38:22,551 INFO  L168              Benchmark]: RCFGBuilder took 361.24 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 161.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB.
[2020-07-21 01:38:22,552 INFO  L168              Benchmark]: TraceAbstraction took 1076.86 ms. Allocated memory is still 201.3 MB. Free memory was 161.0 MB in the beginning and 122.6 MB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB.
[2020-07-21 01:38:22,556 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.23 ms. Allocated memory is still 144.7 MB. Free memory was 119.6 MB in the beginning and 119.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 281.66 ms. Allocated memory is still 144.7 MB. Free memory was 100.9 MB in the beginning and 90.5 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 132.85 ms. Allocated memory was 144.7 MB in the beginning and 201.3 MB in the end (delta: 56.6 MB). Free memory was 90.5 MB in the beginning and 178.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 361.24 ms. Allocated memory is still 201.3 MB. Free memory was 178.3 MB in the beginning and 161.6 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 1076.86 ms. Allocated memory is still 201.3 MB. Free memory was 161.0 MB in the beginning and 122.6 MB in the end (delta: 38.3 MB). Peak memory consumption was 38.3 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)=3, N=0]
[L21]              N = __VERIFIER_nondet_int()
[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;
[L26]              long long *a = malloc(sizeof(long long)*N);
[L27]              long long *b = malloc(sizeof(long long)*N);
[L29]              a[0] = 8
[L30]              b[0] = 0
[L31]              i=1
       VAL         [\old(N)=0, a={-1:0}, b={1:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={1:0}, N=1]
[L31]  COND FALSE  !(i<N)
       VAL         [\old(N)=0, a={-1:0}, b={1:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={1:0}, N=1]
[L36]              i=1
       VAL         [\old(N)=0, a={-1:0}, b={1:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={1:0}, N=1]
[L36]  COND FALSE  !(i<N)
       VAL         [\old(N)=0, a={-1:0}, b={1:0}, i=1, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={1:0}, N=1]
[L41]              i=0
       VAL         [\old(N)=0, a={-1:0}, b={1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={1:0}, N=1]
[L41]  COND TRUE   i<N
[L43]  EXPR        b[i]
       VAL         [\old(N)=0, a={-1:0}, b={1:0}, b[i]=0, i=0, malloc(sizeof(long long)*N)={-1:0}, malloc(sizeof(long long)*N)={1:0}, N=1]
[L43]  CALL        __VERIFIER_assert(b[i] == 4*i*i + 4*i + 1)
       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, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 44 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...