/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-7d8eed3
[2020-11-07 01:56:14,965 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-11-07 01:56:14,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-11-07 01:56:15,023 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-11-07 01:56:15,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-11-07 01:56:15,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-11-07 01:56:15,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-11-07 01:56:15,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-11-07 01:56:15,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-11-07 01:56:15,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-11-07 01:56:15,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-11-07 01:56:15,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-11-07 01:56:15,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-11-07 01:56:15,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-11-07 01:56:15,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-11-07 01:56:15,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-11-07 01:56:15,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-11-07 01:56:15,063 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-11-07 01:56:15,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-11-07 01:56:15,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-11-07 01:56:15,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-11-07 01:56:15,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-11-07 01:56:15,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-11-07 01:56:15,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-11-07 01:56:15,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-11-07 01:56:15,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-11-07 01:56:15,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-11-07 01:56:15,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-11-07 01:56:15,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-11-07 01:56:15,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-11-07 01:56:15,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-11-07 01:56:15,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-11-07 01:56:15,103 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-11-07 01:56:15,104 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-11-07 01:56:15,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-11-07 01:56:15,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-11-07 01:56:15,106 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-11-07 01:56:15,106 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-11-07 01:56:15,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-11-07 01:56:15,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-11-07 01:56:15,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-11-07 01:56:15,109 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-11-07 01:56:15,135 INFO L113 SettingsManager]: Loading preferences was successful
[2020-11-07 01:56:15,136 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-11-07 01:56:15,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-11-07 01:56:15,141 INFO L138 SettingsManager]: * sizeof long=4
[2020-11-07 01:56:15,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-11-07 01:56:15,141 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-11-07 01:56:15,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-11-07 01:56:15,141 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-11-07 01:56:15,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-11-07 01:56:15,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-11-07 01:56:15,143 INFO L138 SettingsManager]: * sizeof long double=12
[2020-11-07 01:56:15,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-11-07 01:56:15,143 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-11-07 01:56:15,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-11-07 01:56:15,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-11-07 01:56:15,144 INFO L138 SettingsManager]: * Size of a code block=SingleStatement
[2020-11-07 01:56:15,144 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-11-07 01:56:15,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-11-07 01:56:15,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-11-07 01:56:15,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-11-07 01:56:15,145 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-11-07 01:56:15,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-11-07 01:56:15,145 INFO L138 SettingsManager]: * Use separate solver for trace checks=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2020-11-07 01:56:15,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-11-07 01:56:15,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-11-07 01:56:15,622 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-11-07 01:56:15,624 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-11-07 01:56:15,624 INFO L275 PluginConnector]: CDTParser initialized
[2020-11-07 01:56:15,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn4f.c
[2020-11-07 01:56:15,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/843abac42/09981548433b40ec9a59cb28b3fbe618/FLAG63b30e20a
[2020-11-07 01:56:16,277 INFO L306 CDTParser]: Found 1 translation units.
[2020-11-07 01:56:16,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn4f.c
[2020-11-07 01:56:16,290 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/843abac42/09981548433b40ec9a59cb28b3fbe618/FLAG63b30e20a
[2020-11-07 01:56:16,653 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/843abac42/09981548433b40ec9a59cb28b3fbe618
[2020-11-07 01:56:16,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-11-07 01:56:16,669 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-11-07 01:56:16,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-11-07 01:56:16,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-11-07 01:56:16,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-11-07 01:56:16,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:16" (1/1) ...
[2020-11-07 01:56:16,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45ff1be5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:16, skipping insertion in model container
[2020-11-07 01:56:16,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:16" (1/1) ...
[2020-11-07 01:56:16,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-11-07 01:56:16,714 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-11-07 01:56:16,984 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-07 01:56:17,000 INFO L203 MainTranslator]: Completed pre-run
[2020-11-07 01:56:17,043 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-11-07 01:56:17,060 INFO L208 MainTranslator]: Completed translation
[2020-11-07 01:56:17,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17 WrapperNode
[2020-11-07 01:56:17,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-11-07 01:56:17,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-11-07 01:56:17,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-11-07 01:56:17,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-11-07 01:56:17,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17" (1/1) ...
[2020-11-07 01:56:17,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17" (1/1) ...
[2020-11-07 01:56:17,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17" (1/1) ...
[2020-11-07 01:56:17,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17" (1/1) ...
[2020-11-07 01:56:17,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17" (1/1) ...
[2020-11-07 01:56:17,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17" (1/1) ...
[2020-11-07 01:56:17,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17" (1/1) ...
[2020-11-07 01:56:17,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-11-07 01:56:17,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-11-07 01:56:17,114 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-11-07 01:56:17,114 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-11-07 01:56:17,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17" (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
[2020-11-07 01:56:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-11-07 01:56:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-11-07 01:56:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-11-07 01:56:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-11-07 01:56:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-11-07 01:56:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-11-07 01:56:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-11-07 01:56:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-11-07 01:56:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-11-07 01:56:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-11-07 01:56:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-11-07 01:56:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-11-07 01:56:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-11-07 01:56:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-11-07 01:56:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-11-07 01:56:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-11-07 01:56:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-11-07 01:56:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-11-07 01:56:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-11-07 01:56:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-11-07 01:56:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-11-07 01:56:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-11-07 01:56:17,642 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-11-07 01:56:17,642 INFO L298 CfgBuilder]: Removed 3 assume(true) statements.
[2020-11-07 01:56:17,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:17 BoogieIcfgContainer
[2020-11-07 01:56:17,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-11-07 01:56:17,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-11-07 01:56:17,647 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-11-07 01:56:17,650 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-11-07 01:56:17,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:16" (1/3) ...
[2020-11-07 01:56:17,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7f637e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:17, skipping insertion in model container
[2020-11-07 01:56:17,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:17" (2/3) ...
[2020-11-07 01:56:17,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f7f637e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:17, skipping insertion in model container
[2020-11-07 01:56:17,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:17" (3/3) ...
[2020-11-07 01:56:17,654 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn4f.c
[2020-11-07 01:56:17,671 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-11-07 01:56:17,674 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-11-07 01:56:17,687 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-11-07 01:56:17,713 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-11-07 01:56:17,713 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-11-07 01:56:17,713 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-11-07 01:56:17,713 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-11-07 01:56:17,713 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-11-07 01:56:17,714 INFO L382 AbstractCegarLoop]: Difference is false
[2020-11-07 01:56:17,714 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-11-07 01:56:17,714 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-11-07 01:56:17,731 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states.
[2020-11-07 01:56:17,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2020-11-07 01:56:17,742 INFO L414 BasicCegarLoop]: Found error trace
[2020-11-07 01:56:17,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-11-07 01:56:17,743 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-11-07 01:56:17,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-11-07 01:56:17,750 INFO L82 PathProgramCache]: Analyzing trace with hash 656538121, now seen corresponding path program 1 times
[2020-11-07 01:56:17,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-11-07 01:56:17,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836220769]
[2020-11-07 01:56:17,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-11-07 01:56:17,836 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-11-07 01:56:17,925 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility
[2020-11-07 01:56:17,926 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-11-07 01:56:17,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-11-07 01:56:17,950 WARN L253 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2020-11-07 01:56:17,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:17 BoogieIcfgContainer
[2020-11-07 01:56:17,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-11-07 01:56:17,954 INFO L168 Benchmark]: Toolchain (without parser) took 1291.48 ms. Allocated memory is still 162.5 MB. Free memory was 139.1 MB in the beginning and 131.4 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:17,954 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-11-07 01:56:17,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.44 ms. Allocated memory is still 162.5 MB. Free memory was 138.3 MB in the beginning and 128.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:17,957 INFO L168 Benchmark]: Boogie Preprocessor took 41.36 ms. Allocated memory is still 162.5 MB. Free memory was 128.6 MB in the beginning and 127.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:17,958 INFO L168 Benchmark]: RCFGBuilder took 531.13 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 144.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:17,959 INFO L168 Benchmark]: TraceAbstraction took 304.18 ms. Allocated memory is still 162.5 MB. Free memory was 143.5 MB in the beginning and 131.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
[2020-11-07 01:56:17,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 387.44 ms. Allocated memory is still 162.5 MB. Free memory was 138.3 MB in the beginning and 128.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 41.36 ms. Allocated memory is still 162.5 MB. Free memory was 128.6 MB in the beginning and 127.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 531.13 ms. Allocated memory is still 162.5 MB. Free memory was 126.8 MB in the beginning and 144.0 MB in the end (delta: -17.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 304.18 ms. Allocated memory is still 162.5 MB. Free memory was 143.5 MB in the beginning and 131.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: unable to decide satisfiability of path constraint.
Possible FailurePath:
[L19] int N;
[L23] N = __VERIFIER_nondet_int()
[L24] COND FALSE !(N <= 0)
[L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L13] COND FALSE !(!cond)
[L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L27] int i;
[L28] long long *a = malloc(sizeof(long long)*N);
[L29] long long *b = malloc(sizeof(long long)*N);
[L31] i=0
[L31] COND FALSE !(i<N)
[L40] i=0
[L40] COND FALSE !(i<N)
[L49] i=0
[L49] COND TRUE i<N
[L51] EXPR b[i]
[L51] CALL __VERIFIER_assert(b[i] == 4*i*i + 4*i + 1)
[L15] COND TRUE !(cond)
[L15] CALL reach_error()
[L10] __assert_fail("0", "ifeqn4f.c", 10, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 6 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 could not prove your program: unable to determine feasibility of some traces
Received shutdown request...