/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn5f.c
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This is Ultimate 0.1.25-d623d84
[2020-07-21 20:18:20,977 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-07-21 20:18:20,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-21 20:18:20,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-21 20:18:20,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-21 20:18:20,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-21 20:18:20,997 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-21 20:18:20,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-21 20:18:21,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-21 20:18:21,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-21 20:18:21,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-07-21 20:18:21,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-21 20:18:21,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-21 20:18:21,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-21 20:18:21,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-21 20:18:21,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-21 20:18:21,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-21 20:18:21,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-21 20:18:21,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-21 20:18:21,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-21 20:18:21,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-21 20:18:21,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-21 20:18:21,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-07-21 20:18:21,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-21 20:18:21,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-21 20:18:21,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-21 20:18:21,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-21 20:18:21,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-21 20:18:21,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-21 20:18:21,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-21 20:18:21,024 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-21 20:18:21,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-21 20:18:21,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-21 20:18:21,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-21 20:18:21,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-21 20:18:21,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-21 20:18:21,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-21 20:18:21,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-21 20:18:21,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-21 20:18:21,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-21 20:18:21,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-07-21 20:18:21,031 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 20:18:21,046 INFO L113 SettingsManager]: Loading preferences was successful
[2020-07-21 20:18:21,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-21 20:18:21,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-21 20:18:21,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-07-21 20:18:21,048 INFO L138 SettingsManager]: * Use SBE=true
[2020-07-21 20:18:21,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-21 20:18:21,049 INFO L138 SettingsManager]: * sizeof long=4
[2020-07-21 20:18:21,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-07-21 20:18:21,049 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-07-21 20:18:21,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-07-21 20:18:21,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-07-21 20:18:21,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-21 20:18:21,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-07-21 20:18:21,050 INFO L138 SettingsManager]: * sizeof long double=12
[2020-07-21 20:18:21,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-07-21 20:18:21,050 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-07-21 20:18:21,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-07-21 20:18:21,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-21 20:18:21,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-07-21 20:18:21,051 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-07-21 20:18:21,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-07-21 20:18:21,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-21 20:18:21,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-21 20:18:21,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-07-21 20:18:21,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-21 20:18:21,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-07-21 20:18:21,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 20:18:21,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-21 20:18:21,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-07-21 20:18:21,053 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 -> DAGSIZE
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 -> 2
[2020-07-21 20:18:21,331 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-21 20:18:21,344 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-21 20:18:21,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-21 20:18:21,349 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-07-21 20:18:21,350 INFO L275 PluginConnector]: CDTParser initialized
[2020-07-21 20:18:21,350 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn5f.c
[2020-07-21 20:18:21,431 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03870d8f8/61b15205ba7843e0b70915840625ad0c/FLAGf3247c742
[2020-07-21 20:18:21,950 INFO L306 CDTParser]: Found 1 translation units.
[2020-07-21 20:18:21,951 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn5f.c
[2020-07-21 20:18:21,958 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03870d8f8/61b15205ba7843e0b70915840625ad0c/FLAGf3247c742
[2020-07-21 20:18:22,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03870d8f8/61b15205ba7843e0b70915840625ad0c
[2020-07-21 20:18:22,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-21 20:18:22,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-21 20:18:22,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-21 20:18:22,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-21 20:18:22,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-21 20:18:22,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:18:22" (1/1) ...
[2020-07-21 20:18:22,284 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a584d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22, skipping insertion in model container
[2020-07-21 20:18:22,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:18:22" (1/1) ...
[2020-07-21 20:18:22,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-07-21 20:18:22,312 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-07-21 20:18:22,482 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 20:18:22,491 INFO L203 MainTranslator]: Completed pre-run
[2020-07-21 20:18:22,510 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-07-21 20:18:22,526 INFO L208 MainTranslator]: Completed translation
[2020-07-21 20:18:22,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22 WrapperNode
[2020-07-21 20:18:22,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-21 20:18:22,527 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-21 20:18:22,527 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-21 20:18:22,527 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-07-21 20:18:22,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22" (1/1) ...
[2020-07-21 20:18:22,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22" (1/1) ...
[2020-07-21 20:18:22,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22" (1/1) ...
[2020-07-21 20:18:22,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22" (1/1) ...
[2020-07-21 20:18:22,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22" (1/1) ...
[2020-07-21 20:18:22,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22" (1/1) ...
[2020-07-21 20:18:22,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22" (1/1) ...
[2020-07-21 20:18:22,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-21 20:18:22,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-21 20:18:22,669 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-07-21 20:18:22,669 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-07-21 20:18:22,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22" (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 20:18:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-21 20:18:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-21 20:18:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-07-21 20:18:22,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-07-21 20:18:22,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-07-21 20:18:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-21 20:18:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-07-21 20:18:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-07-21 20:18:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-07-21 20:18:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-21 20:18:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-07-21 20:18:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-07-21 20:18:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-21 20:18:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-07-21 20:18:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-07-21 20:18:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-21 20:18:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-21 20:18:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-21 20:18:22,990 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-21 20:18:22,991 INFO L295 CfgBuilder]: Removed 3 assume(true) statements.
[2020-07-21 20:18:22,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:18:22 BoogieIcfgContainer
[2020-07-21 20:18:22,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-21 20:18:22,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-21 20:18:22,996 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-07-21 20:18:23,000 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-07-21 20:18:23,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:18:22" (1/3) ...
[2020-07-21 20:18:23,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51651c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:18:23, skipping insertion in model container
[2020-07-21 20:18:23,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:18:22" (2/3) ...
[2020-07-21 20:18:23,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51651c6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:18:23, skipping insertion in model container
[2020-07-21 20:18:23,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:18:22" (3/3) ...
[2020-07-21 20:18:23,004 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn5f.c
[2020-07-21 20:18:23,015 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-21 20:18:23,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-21 20:18:23,047 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-21 20:18:23,099 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-07-21 20:18:23,099 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-07-21 20:18:23,099 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-21 20:18:23,100 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-21 20:18:23,100 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-21 20:18:23,100 INFO L380 AbstractCegarLoop]: Difference is false
[2020-07-21 20:18:23,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-21 20:18:23,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-21 20:18:23,126 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states.
[2020-07-21 20:18:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-07-21 20:18:23,134 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 20:18:23,135 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 20:18:23,136 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 20:18:23,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 20:18:23,143 INFO L82 PathProgramCache]: Analyzing trace with hash -294712258, now seen corresponding path program 1 times
[2020-07-21 20:18:23,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 20:18:23,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518025660]
[2020-07-21 20:18:23,153 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 20:18:23,252 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s)
[2020-07-21 20:18:23,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2020-07-21 20:18:23,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-21 20:18:23,261 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2020-07-21 20:18:23,328 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 20:18:23,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-21 20:18:23,330 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518025660]
[2020-07-21 20:18:23,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-21 20:18:23,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-07-21 20:18:23,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004400858]
[2020-07-21 20:18:23,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-07-21 20:18:23,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-21 20:18:23,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-07-21 20:18:23,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-07-21 20:18:23,355 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states.
[2020-07-21 20:18:23,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-21 20:18:23,517 INFO L93 Difference]: Finished difference Result 76 states and 104 transitions.
[2020-07-21 20:18:23,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-07-21 20:18:23,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22
[2020-07-21 20:18:23,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-21 20:18:23,531 INFO L225 Difference]: With dead ends: 76
[2020-07-21 20:18:23,531 INFO L226 Difference]: Without dead ends: 41
[2020-07-21 20:18:23,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-07-21 20:18:23,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2020-07-21 20:18:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33.
[2020-07-21 20:18:23,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states.
[2020-07-21 20:18:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions.
[2020-07-21 20:18:23,586 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 22
[2020-07-21 20:18:23,586 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-07-21 20:18:23,586 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions.
[2020-07-21 20:18:23,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-07-21 20:18:23,587 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions.
[2020-07-21 20:18:23,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2020-07-21 20:18:23,588 INFO L414 BasicCegarLoop]: Found error trace
[2020-07-21 20:18:23,588 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]
[2020-07-21 20:18:23,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 20:18:23,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-21 20:18:23,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-07-21 20:18:23,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1477618916, now seen corresponding path program 1 times
[2020-07-21 20:18:23,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-21 20:18:23,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565444571]
[2020-07-21 20:18:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 20:18:23,883 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s)
[2020-07-21 20:18:23,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2020-07-21 20:18:23,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 20:18:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-21 20:18:23,901 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-21 20:18:23,924 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-21 20:18:23,924 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-07-21 20:18:24,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-21 20:18:24,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:18:24 BoogieIcfgContainer
[2020-07-21 20:18:24,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-21 20:18:24,188 INFO L168 Benchmark]: Toolchain (without parser) took 1915.22 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 103.9 MB in the beginning and 111.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 49.5 MB. Max. memory is 7.1 GB.
[2020-07-21 20:18:24,189 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
[2020-07-21 20:18:24,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.43 ms. Allocated memory is still 145.8 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
[2020-07-21 20:18:24,191 INFO L168 Benchmark]: Boogie Preprocessor took 140.87 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.1 MB in the beginning and 181.0 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
[2020-07-21 20:18:24,192 INFO L168 Benchmark]: RCFGBuilder took 326.55 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 162.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
[2020-07-21 20:18:24,193 INFO L168 Benchmark]: TraceAbstraction took 1188.94 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 111.6 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 MB. Max. memory is 7.1 GB.
[2020-07-21 20:18:24,198 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 252.43 ms. Allocated memory is still 145.8 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 140.87 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.1 MB in the beginning and 181.0 MB in the end (delta: -87.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 326.55 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 162.7 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1188.94 ms. Allocated memory is still 202.9 MB. Free memory was 162.0 MB in the beginning and 111.6 MB in the end (delta: 50.4 MB). Peak memory consumption was 50.4 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)=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] 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]
[L29] COND TRUE i<N
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]
[L31] COND TRUE i==0
[L32] a[0] = 10
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]
[L29] i++
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]
[L29] 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]
[L38] 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]
[L38] COND TRUE i<N
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]
[L40] COND TRUE i==0
[L41] b[0] = 1
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]
[L38] i++
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]
[L38] 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]
[L47] 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]
[L47] COND TRUE i<N
[L49] EXPR b[i]
VAL [\old(N)=0, a={-1:0}, b={1:0}, b[i]=1, i=0, malloc(sizeof(long long)*N)={1:0}, malloc(sizeof(long long)*N)={-1:0}, N=1]
[L49] CALL __VERIFIER_assert(b[i] == 5*i*i + 5*i + 5)
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, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 33 SDslu, 26 SDs, 0 SdLazy, 38 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 50 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 819 SizeOfPredicates, 2 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 3 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...