/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 20:40:59,893 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 20:40:59,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 20:40:59,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 20:40:59,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 20:40:59,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 20:40:59,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 20:40:59,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 20:40:59,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 20:40:59,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 20:40:59,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 20:40:59,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 20:40:59,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 20:40:59,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 20:40:59,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 20:40:59,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 20:40:59,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 20:40:59,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 20:40:59,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 20:40:59,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 20:40:59,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 20:40:59,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 20:40:59,988 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 20:40:59,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 20:41:00,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 20:41:00,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 20:41:00,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 20:41:00,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 20:41:00,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 20:41:00,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 20:41:00,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 20:41:00,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 20:41:00,015 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 20:41:00,016 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 20:41:00,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 20:41:00,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 20:41:00,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 20:41:00,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 20:41:00,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 20:41:00,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 20:41:00,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 20:41:00,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 20:41:00,072 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 20:41:00,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 20:41:00,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 20:41:00,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 20:41:00,076 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 20:41:00,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 20:41:00,076 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 20:41:00,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 20:41:00,077 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 20:41:00,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 20:41:00,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 20:41:00,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 20:41:00,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 20:41:00,079 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 20:41:00,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 20:41:00,079 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 20:41:00,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 20:41:00,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 20:41:00,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 20:41:00,080 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 20:41:00,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 20:41:00,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 20:41:00,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 20:41:00,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 20:41:00,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 20:41:00,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 20:41:00,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 20:41:00,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 20:41:00,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 20:41:00,082 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 -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;
[2020-09-24 20:41:00,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 20:41:00,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 20:41:00,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 20:41:00,612 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 20:41:00,612 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 20:41:00,613 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c
[2020-09-24 20:41:00,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80c8408f8/ce16a14da37846b9bcd0207e2661cf8e/FLAG393968ff6
[2020-09-24 20:41:01,245 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 20:41:01,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn2f.c
[2020-09-24 20:41:01,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80c8408f8/ce16a14da37846b9bcd0207e2661cf8e/FLAG393968ff6
[2020-09-24 20:41:01,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80c8408f8/ce16a14da37846b9bcd0207e2661cf8e
[2020-09-24 20:41:01,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 20:41:01,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 20:41:01,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 20:41:01,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 20:41:01,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 20:41:01,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:01" (1/1) ...
[2020-09-24 20:41:01,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb59baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01, skipping insertion in model container
[2020-09-24 20:41:01,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:41:01" (1/1) ...
[2020-09-24 20:41:01,623 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 20:41:01,651 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 20:41:01,879 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:41:01,892 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 20:41:01,920 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 20:41:01,939 INFO L208 MainTranslator]: Completed translation
[2020-09-24 20:41:01,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01 WrapperNode
[2020-09-24 20:41:01,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 20:41:01,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 20:41:01,941 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 20:41:01,941 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 20:41:02,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ...
[2020-09-24 20:41:02,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ...
[2020-09-24 20:41:02,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ...
[2020-09-24 20:41:02,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ...
[2020-09-24 20:41:02,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ...
[2020-09-24 20:41:02,066 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ...
[2020-09-24 20:41:02,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ...
[2020-09-24 20:41:02,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 20:41:02,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 20:41:02,071 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 20:41:02,071 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 20:41:02,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/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
[2020-09-24 20:41:02,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 20:41:02,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 20:41:02,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2020-09-24 20:41:02,151 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-24 20:41:02,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 20:41:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 20:41:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-09-24 20:41:02,151 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure malloc
[2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 20:41:02,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 20:41:02,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 20:41:02,543 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 20:41:02,544 INFO L295 CfgBuilder]: Removed 3 assume(true) statements.
[2020-09-24 20:41:02,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:02 BoogieIcfgContainer
[2020-09-24 20:41:02,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 20:41:02,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 20:41:02,551 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 20:41:02,554 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 20:41:02,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:41:01" (1/3) ...
[2020-09-24 20:41:02,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df5fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:02, skipping insertion in model container
[2020-09-24 20:41:02,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:41:01" (2/3) ...
[2020-09-24 20:41:02,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67df5fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:41:02, skipping insertion in model container
[2020-09-24 20:41:02,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:41:02" (3/3) ...
[2020-09-24 20:41:02,558 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c
[2020-09-24 20:41:02,569 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 20:41:02,579 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 20:41:02,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 20:41:02,627 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 20:41:02,628 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 20:41:02,628 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 20:41:02,628 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 20:41:02,628 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 20:41:02,628 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 20:41:02,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 20:41:02,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 20:41:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states.
[2020-09-24 20:41:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2020-09-24 20:41:02,659 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 20:41:02,660 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]
[2020-09-24 20:41:02,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 20:41:02,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 20:41:02,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times
[2020-09-24 20:41:02,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 20:41:02,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823481632]
[2020-09-24 20:41:02,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 20:41:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 20:41:02,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 20:41:02,952 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823481632]
[2020-09-24 20:41:02,953 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic
[2020-09-24 20:41:02,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences.
[2020-09-24 20:41:02,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0
[2020-09-24 20:41:02,954 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible
[2020-09-24 20:41:02,955 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 20:41:02,969 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 20:41:02,999 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually.
[2020-09-24 20:41:03,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:41:03 BoogieIcfgContainer
[2020-09-24 20:41:03,000 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 20:41:03,004 INFO L168 Benchmark]: Toolchain (without parser) took 1408.66 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 104.2 MB in the beginning and 142.5 MB in the end (delta: -38.3 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:03,005 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 20:41:03,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.99 ms. Allocated memory is still 141.0 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:03,007 INFO L168 Benchmark]: Boogie Preprocessor took 129.28 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 93.1 MB in the beginning and 180.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:03,008 INFO L168 Benchmark]: RCFGBuilder took 478.52 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 160.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:03,009 INFO L168 Benchmark]: TraceAbstraction took 450.10 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 142.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB.
[2020-09-24 20:41:03,014 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.31 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 340.99 ms. Allocated memory is still 141.0 MB. Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 129.28 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 93.1 MB in the beginning and 180.3 MB in the end (delta: -87.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 478.52 ms. Allocated memory is still 202.9 MB. Free memory was 180.3 MB in the beginning and 160.2 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 450.10 ms. Allocated memory is still 202.9 MB. Free memory was 160.2 MB in the beginning and 142.5 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 13]: 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:
[L17] int N;
[L21] N = __VERIFIER_nondet_int()
[L22] COND FALSE !(N <= 0)
[L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int))
[L11] COND FALSE !(!cond)
[L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int))
[L25] int i;
[L26] long long *a = malloc(sizeof(long long)*N);
[L27] long long *b = malloc(sizeof(long long)*N);
[L29] i=0
[L29] COND FALSE !(i<N)
[L38] i=0
[L38] COND FALSE !(i<N)
[L47] i=0
[L47] COND TRUE i<N
[L49] EXPR b[i]
[L49] CALL __VERIFIER_assert(b[i] == 2*i*i + 2*i)
[L13] COND TRUE !(cond)
[L13] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.3s, 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=65occurred 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces
Received shutdown request...