/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condaf.c


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


This is Ultimate 0.1.25-d623d84
[2020-07-20 11:45:46,083 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-20 11:45:46,085 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 11:45:46,098 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 11:45:46,098 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 11:45:46,099 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 11:45:46,100 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 11:45:46,102 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 11:45:46,104 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 11:45:46,105 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 11:45:46,106 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 11:45:46,107 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 11:45:46,107 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 11:45:46,108 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 11:45:46,109 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 11:45:46,110 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 11:45:46,111 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 11:45:46,112 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 11:45:46,113 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 11:45:46,115 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 11:45:46,117 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 11:45:46,118 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 11:45:46,119 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 11:45:46,120 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 11:45:46,122 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 11:45:46,122 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 11:45:46,123 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 11:45:46,123 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 11:45:46,124 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2020-07-20 11:45:46,125 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2020-07-20 11:45:46,126 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 11:45:46,127 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 11:45:46,128 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 11:45:46,128 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-07-20 11:45:46,129 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-07-20 11:45:46,131 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 11:45:46,131 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
[2020-07-20 11:45:46,146 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-20 11:45:46,146 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 11:45:46,147 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 11:45:46,148 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-20 11:45:46,148 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-20 11:45:46,148 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 11:45:46,148 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-20 11:45:46,149 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-20 11:45:46,149 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-20 11:45:46,149 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-20 11:45:46,149 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 11:45:46,149 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 11:45:46,149 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 11:45:46,150 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-20 11:45:46,150 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-20 11:45:46,150 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-20 11:45:46,150 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-20 11:45:46,150 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 11:45:46,151 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-20 11:45:46,151 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-20 11:45:46,151 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-20 11:45:46,151 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 11:45:46,151 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 11:45:46,152 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 11:45:46,152 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 11:45:46,152 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-20 11:45:46,152 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:46,152 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 11:45:46,153 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-20 11:45:46,153 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 -> NOT_INCREMENTALLY
[2020-07-20 11:45:46,418 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 11:45:46,431 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 11:45:46,434 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 11:45:46,436 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-20 11:45:46,436 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-20 11:45:46,437 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c
[2020-07-20 11:45:46,515 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643b17e36/33910b949a91421e88a0e20e3e8c05dc/FLAG3692a922e
[2020-07-20 11:45:46,985 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-20 11:45:46,986 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c
[2020-07-20 11:45:46,992 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643b17e36/33910b949a91421e88a0e20e3e8c05dc/FLAG3692a922e
[2020-07-20 11:45:47,397 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643b17e36/33910b949a91421e88a0e20e3e8c05dc
[2020-07-20 11:45:47,406 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 11:45:47,410 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 11:45:47,411 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 11:45:47,411 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 11:45:47,414 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 11:45:47,415 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,418 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212b6ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47, skipping insertion in model container
[2020-07-20 11:45:47,418 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,426 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-20 11:45:47,444 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-20 11:45:47,640 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:45:47,649 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-20 11:45:47,671 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:45:47,775 INFO  L208         MainTranslator]: Completed translation
[2020-07-20 11:45:47,775 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47 WrapperNode
[2020-07-20 11:45:47,775 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 11:45:47,777 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 11:45:47,777 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 11:45:47,777 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 11:45:47,787 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,787 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,796 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,796 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,805 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,811 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,814 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (1/1) ...
[2020-07-20 11:45:47,817 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 11:45:47,821 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 11:45:47,821 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 11:45:47,821 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-20 11:45:47,822 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (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
[2020-07-20 11:45:47,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 11:45:47,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 11:45:47,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-20 11:45:47,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-20 11:45:47,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 11:45:47,886 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 11:45:47,886 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-07-20 11:45:47,887 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-20 11:45:47,887 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-20 11:45:47,887 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 11:45:47,887 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-07-20 11:45:47,887 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-20 11:45:47,887 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-20 11:45:47,888 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-20 11:45:47,888 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-07-20 11:45:47,889 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-07-20 11:45:47,889 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 11:45:47,889 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 11:45:47,889 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 11:45:48,217 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 11:45:48,217 INFO  L295             CfgBuilder]: Removed 3 assume(true) statements.
[2020-07-20 11:45:48,221 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:45:48 BoogieIcfgContainer
[2020-07-20 11:45:48,221 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 11:45:48,223 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 11:45:48,223 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 11:45:48,226 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-20 11:45:48,226 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:45:47" (1/3) ...
[2020-07-20 11:45:48,227 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4fd74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:45:48, skipping insertion in model container
[2020-07-20 11:45:48,227 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:45:47" (2/3) ...
[2020-07-20 11:45:48,228 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a4fd74f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:45:48, skipping insertion in model container
[2020-07-20 11:45:48,228 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:45:48" (3/3) ...
[2020-07-20 11:45:48,230 INFO  L109   eAbstractionObserver]: Analyzing ICFG condaf.c
[2020-07-20 11:45:48,240 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 11:45:48,247 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 11:45:48,261 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 11:45:48,283 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-20 11:45:48,283 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-20 11:45:48,284 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 11:45:48,284 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 11:45:48,284 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 11:45:48,284 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-20 11:45:48,284 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 11:45:48,284 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 11:45:48,302 INFO  L276                IsEmpty]: Start isEmpty. Operand 35 states.
[2020-07-20 11:45:48,308 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-07-20 11:45:48,308 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:45:48,309 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]
[2020-07-20 11:45:48,310 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:45:48,316 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:45:48,316 INFO  L82        PathProgramCache]: Analyzing trace with hash -88121349, now seen corresponding path program 1 times
[2020-07-20 11:45:48,323 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:45:48,323 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253451414]
[2020-07-20 11:45:48,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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
[2020-07-20 11:45:48,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:45:48,406 INFO  L263         TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 1 conjunts are in the unsatisfiable core
[2020-07-20 11:45:48,412 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:45:48,436 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:45:48,437 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:45:48,438 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253451414]
[2020-07-20 11:45:48,439 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:45:48,439 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2020-07-20 11:45:48,440 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113159973]
[2020-07-20 11:45:48,444 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 2 states
[2020-07-20 11:45:48,445 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:45:48,454 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2020-07-20 11:45:48,455 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 11:45:48,457 INFO  L87              Difference]: Start difference. First operand 35 states. Second operand 2 states.
[2020-07-20 11:45:48,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:45:48,480 INFO  L93              Difference]: Finished difference Result 60 states and 77 transitions.
[2020-07-20 11:45:48,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2020-07-20 11:45:48,482 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 23
[2020-07-20 11:45:48,482 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:45:48,489 INFO  L225             Difference]: With dead ends: 60
[2020-07-20 11:45:48,489 INFO  L226             Difference]: Without dead ends: 28
[2020-07-20 11:45:48,493 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2020-07-20 11:45:48,509 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2020-07-20 11:45:48,528 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2020-07-20 11:45:48,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2020-07-20 11:45:48,531 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2020-07-20 11:45:48,532 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23
[2020-07-20 11:45:48,533 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:45:48,533 INFO  L479      AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2020-07-20 11:45:48,533 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2020-07-20 11:45:48,534 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2020-07-20 11:45:48,535 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2020-07-20 11:45:48,535 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:45:48,535 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]
[2020-07-20 11:45:48,749 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:48,750 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:45:48,750 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:45:48,751 INFO  L82        PathProgramCache]: Analyzing trace with hash -1099238599, now seen corresponding path program 1 times
[2020-07-20 11:45:48,752 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:45:48,752 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8478035]
[2020-07-20 11:45:48,753 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
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
[2020-07-20 11:45:48,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:45:48,810 INFO  L263         TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-20 11:45:48,813 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:45:48,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:45:48,867 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:45:48,867 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8478035]
[2020-07-20 11:45:48,868 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:45:48,868 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-20 11:45:48,868 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207893656]
[2020-07-20 11:45:48,870 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-20 11:45:48,870 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:45:48,871 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-20 11:45:48,871 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-07-20 11:45:48,872 INFO  L87              Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 4 states.
[2020-07-20 11:45:48,950 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:45:48,950 INFO  L93              Difference]: Finished difference Result 48 states and 57 transitions.
[2020-07-20 11:45:48,951 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-07-20 11:45:48,951 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 23
[2020-07-20 11:45:48,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:45:48,953 INFO  L225             Difference]: With dead ends: 48
[2020-07-20 11:45:48,953 INFO  L226             Difference]: Without dead ends: 35
[2020-07-20 11:45:48,954 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-07-20 11:45:48,955 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-07-20 11:45:48,961 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31.
[2020-07-20 11:45:48,961 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2020-07-20 11:45:48,962 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions.
[2020-07-20 11:45:48,963 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23
[2020-07-20 11:45:48,963 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:45:48,963 INFO  L479      AbstractCegarLoop]: Abstraction has 31 states and 34 transitions.
[2020-07-20 11:45:48,963 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-20 11:45:48,964 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions.
[2020-07-20 11:45:48,965 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-07-20 11:45:48,965 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:45:48,965 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]
[2020-07-20 11:45:49,178 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:49,179 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:45:49,180 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:45:49,181 INFO  L82        PathProgramCache]: Analyzing trace with hash 188437731, now seen corresponding path program 1 times
[2020-07-20 11:45:49,181 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:45:49,182 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664759463]
[2020-07-20 11:45:49,182 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:49,231 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:45:49,232 INFO  L263         TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core
[2020-07-20 11:45:49,235 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:45:49,288 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7
[2020-07-20 11:45:49,289 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 11:45:49,297 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:45:49,297 INFO  L544         ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 11:45:49,298 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7
[2020-07-20 11:45:49,341 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2020-07-20 11:45:49,344 INFO  L544         ElimStorePlain]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2020-07-20 11:45:49,348 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:45:49,349 INFO  L544         ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 11:45:49,349 INFO  L244         ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3
[2020-07-20 11:45:49,366 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 11:45:49,366 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2020-07-20 11:45:49,421 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12
[2020-07-20 11:45:49,430 INFO  L384             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20
[2020-07-20 11:45:49,432 INFO  L544         ElimStorePlain]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2020-07-20 11:45:49,436 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:45:49,437 INFO  L544         ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2020-07-20 11:45:49,441 INFO  L624         ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size
[2020-07-20 11:45:49,442 INFO  L544         ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2020-07-20 11:45:49,442 INFO  L244         ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:14, output treesize:7
[2020-07-20 11:45:49,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-07-20 11:45:49,481 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664759463]
[2020-07-20 11:45:49,482 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2020-07-20 11:45:49,482 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2020-07-20 11:45:49,482 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069991143]
[2020-07-20 11:45:49,485 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-07-20 11:45:49,485 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:45:49,486 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-07-20 11:45:49,486 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-07-20 11:45:49,486 INFO  L87              Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states.
[2020-07-20 11:45:49,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:45:49,600 INFO  L93              Difference]: Finished difference Result 48 states and 54 transitions.
[2020-07-20 11:45:49,601 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-07-20 11:45:49,601 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 30
[2020-07-20 11:45:49,601 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:45:49,602 INFO  L225             Difference]: With dead ends: 48
[2020-07-20 11:45:49,602 INFO  L226             Difference]: Without dead ends: 35
[2020-07-20 11:45:49,603 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2020-07-20 11:45:49,604 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2020-07-20 11:45:49,609 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32.
[2020-07-20 11:45:49,609 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-07-20 11:45:49,610 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions.
[2020-07-20 11:45:49,610 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 30
[2020-07-20 11:45:49,611 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:45:49,611 INFO  L479      AbstractCegarLoop]: Abstraction has 32 states and 35 transitions.
[2020-07-20 11:45:49,611 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-07-20 11:45:49,611 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions.
[2020-07-20 11:45:49,612 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2020-07-20 11:45:49,612 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:45:49,612 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]
[2020-07-20 11:45:49,826 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:49,826 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:45:49,827 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:45:49,827 INFO  L82        PathProgramCache]: Analyzing trace with hash 446603169, now seen corresponding path program 1 times
[2020-07-20 11:45:49,828 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:45:49,828 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376505998]
[2020-07-20 11:45:49,828 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:49,871 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 11:45:49,871 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 11:45:49,889 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 11:45:49,889 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 11:45:49,913 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 11:45:49,913 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 11:45:50,126 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:45:50,168 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:45:50 BoogieIcfgContainer
[2020-07-20 11:45:50,168 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 11:45:50,170 INFO  L168              Benchmark]: Toolchain (without parser) took 2762.30 ms. Allocated memory was 137.9 MB in the beginning and 233.8 MB in the end (delta: 95.9 MB). Free memory was 102.5 MB in the beginning and 176.6 MB in the end (delta: -74.1 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,171 INFO  L168              Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,172 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 365.35 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 180.6 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,173 INFO  L168              Benchmark]: Boogie Preprocessor took 43.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,173 INFO  L168              Benchmark]: RCFGBuilder took 400.89 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 160.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,174 INFO  L168              Benchmark]: TraceAbstraction took 1945.93 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 160.0 MB in the beginning and 176.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB.
[2020-07-20 11:45:50,178 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.17 ms. Allocated memory is still 137.9 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 365.35 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 180.6 MB in the end (delta: -78.5 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 43.48 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 178.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 400.89 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 160.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 1945.93 ms. Allocated memory was 201.9 MB in the beginning and 233.8 MB in the end (delta: 32.0 MB). Free memory was 160.0 MB in the beginning and 176.6 MB in the end (delta: -16.6 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L17]              int N;
       VAL         [\old(N)=6, 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]              int sum[1];
[L27]              int *a = malloc(sizeof(int)*N);
[L29]              sum[0] = 0
[L30]              i=0
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L30]  COND TRUE   i<N
[L32]              a[i] = 1
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L30]              i++
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L30]  COND FALSE  !(i<N)
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L35]              i=0
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L35]  COND TRUE   i<N
[L37]  EXPR        a[i]
       VAL         [\old(N)=0, a={-1:0}, a[i]=1, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L37]  COND FALSE  !(a[i] == 0)
[L40]  EXPR        a[i]
[L40]              a[i] = a[i] - 1
[L35]              i++
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L35]  COND FALSE  !(i<N)
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L44]              i=0
       VAL         [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L44]  COND TRUE   i<N
[L46]  EXPR        sum[0]
[L46]  EXPR        a[i]
[L46]              sum[0] = sum[0] + a[i]
[L44]              i++
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L44]  COND FALSE  !(i<N)
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}]
[L49]  EXPR        sum[0]
       VAL         [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1, sum={2:0}, sum[0]=0]
[L49]  CALL        __VERIFIER_assert(sum[0] == 2*N)
       VAL         [\old(cond)=0, \old(N)=0, N=1]
[L13]  COND TRUE   !(cond)
       VAL         [\old(cond)=0, \old(N)=0, cond=0, N=1]
[L13]              __VERIFIER_error()
       VAL         [\old(cond)=0, \old(N)=0, cond=0, N=1]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 5 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 34 SDslu, 86 SDs, 0 SdLazy, 79 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 3 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 4902 SizeOfPredicates, 10 NumberOfNonLiveVariables, 289 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 4/6 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...