/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-177f698
[2020-08-22 05:35:40,697 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-08-22 05:35:40,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-22 05:35:40,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-22 05:35:40,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-22 05:35:40,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-22 05:35:40,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-22 05:35:40,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-22 05:35:40,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-22 05:35:40,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-22 05:35:40,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-08-22 05:35:40,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-22 05:35:40,766 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-22 05:35:40,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-22 05:35:40,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-22 05:35:40,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-22 05:35:40,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-22 05:35:40,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-22 05:35:40,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-22 05:35:40,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-22 05:35:40,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-22 05:35:40,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-22 05:35:40,792 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-08-22 05:35:40,793 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-22 05:35:40,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-22 05:35:40,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-22 05:35:40,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-22 05:35:40,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-22 05:35:40,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-22 05:35:40,798 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-22 05:35:40,798 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-22 05:35:40,799 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-22 05:35:40,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-22 05:35:40,801 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-22 05:35:40,802 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-22 05:35:40,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-22 05:35:40,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-22 05:35:40,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-22 05:35:40,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-22 05:35:40,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-22 05:35:40,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-08-22 05:35:40,805 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
[2020-08-22 05:35:40,827 INFO L113 SettingsManager]: Loading preferences was successful
[2020-08-22 05:35:40,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 05:35:40,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-22 05:35:40,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-08-22 05:35:40,829 INFO L138 SettingsManager]: * Use SBE=true
[2020-08-22 05:35:40,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 05:35:40,830 INFO L138 SettingsManager]: * sizeof long=4
[2020-08-22 05:35:40,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-08-22 05:35:40,830 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-08-22 05:35:40,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-08-22 05:35:40,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 05:35:40,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 05:35:40,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 05:35:40,831 INFO L138 SettingsManager]: * sizeof long double=12
[2020-08-22 05:35:40,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-08-22 05:35:40,831 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-08-22 05:35:40,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-08-22 05:35:40,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 05:35:40,832 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-08-22 05:35:40,832 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-08-22 05:35:40,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-08-22 05:35:40,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 05:35:40,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 05:35:40,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-08-22 05:35:40,833 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-22 05:35:40,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-08-22 05:35:40,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-22 05:35:40,834 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 05:35:40,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-08-22 05:35:40,834 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.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true;
[2020-08-22 05:35:41,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 05:35:41,193 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 05:35:41,199 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 05:35:41,201 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-08-22 05:35:41,202 INFO L275 PluginConnector]: CDTParser initialized
[2020-08-22 05:35:41,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i
[2020-08-22 05:35:41,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3318a071a/5407fde889a2435996dab155084eac45/FLAG4451e9566
[2020-08-22 05:35:41,676 INFO L306 CDTParser]: Found 1 translation units.
[2020-08-22 05:35:41,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/verisec_NetBSD-libc_loop.i
[2020-08-22 05:35:41,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3318a071a/5407fde889a2435996dab155084eac45/FLAG4451e9566
[2020-08-22 05:35:42,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3318a071a/5407fde889a2435996dab155084eac45
[2020-08-22 05:35:42,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 05:35:42,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 05:35:42,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 05:35:42,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 05:35:42,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 05:35:42,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:35:42" (1/1) ...
[2020-08-22 05:35:42,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63832a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42, skipping insertion in model container
[2020-08-22 05:35:42,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:35:42" (1/1) ...
[2020-08-22 05:35:42,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-08-22 05:35:42,152 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-08-22 05:35:42,335 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 05:35:42,347 INFO L203 MainTranslator]: Completed pre-run
[2020-08-22 05:35:42,362 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-08-22 05:35:42,377 INFO L208 MainTranslator]: Completed translation
[2020-08-22 05:35:42,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42 WrapperNode
[2020-08-22 05:35:42,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 05:35:42,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 05:35:42,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 05:35:42,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 05:35:42,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42" (1/1) ...
[2020-08-22 05:35:42,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42" (1/1) ...
[2020-08-22 05:35:42,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42" (1/1) ...
[2020-08-22 05:35:42,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42" (1/1) ...
[2020-08-22 05:35:42,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42" (1/1) ...
[2020-08-22 05:35:42,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42" (1/1) ...
[2020-08-22 05:35:42,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42" (1/1) ...
[2020-08-22 05:35:42,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 05:35:42,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 05:35:42,506 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 05:35:42,507 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-08-22 05:35:42,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42" (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
[2020-08-22 05:35:42,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 05:35:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 05:35:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-08-22 05:35:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2
[2020-08-22 05:35:42,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 05:35:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 05:35:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-08-22 05:35:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure glob2
[2020-08-22 05:35:42,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-08-22 05:35:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-08-22 05:35:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-08-22 05:35:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-22 05:35:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 05:35:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 05:35:42,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-08-22 05:35:42,858 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 05:35:42,858 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-08-22 05:35:42,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:35:42 BoogieIcfgContainer
[2020-08-22 05:35:42,863 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 05:35:42,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 05:35:42,882 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 05:35:42,885 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-08-22 05:35:42,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:35:42" (1/3) ...
[2020-08-22 05:35:42,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d654e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:35:42, skipping insertion in model container
[2020-08-22 05:35:42,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:35:42" (2/3) ...
[2020-08-22 05:35:42,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d654e3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:35:42, skipping insertion in model container
[2020-08-22 05:35:42,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:35:42" (3/3) ...
[2020-08-22 05:35:42,889 INFO L109 eAbstractionObserver]: Analyzing ICFG verisec_NetBSD-libc_loop.i
[2020-08-22 05:35:42,900 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 05:35:42,908 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 05:35:42,923 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 05:35:42,948 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-08-22 05:35:42,948 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-08-22 05:35:42,948 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-22 05:35:42,948 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 05:35:42,948 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 05:35:42,948 INFO L380 AbstractCegarLoop]: Difference is false
[2020-08-22 05:35:42,949 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 05:35:42,949 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 05:35:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states.
[2020-08-22 05:35:42,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2020-08-22 05:35:42,972 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 05:35:42,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 05:35:42,974 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 05:35:42,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 05:35:42,979 INFO L82 PathProgramCache]: Analyzing trace with hash -1626450083, now seen corresponding path program 1 times
[2020-08-22 05:35:42,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 05:35:42,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238943489]
[2020-08-22 05:35:42,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 05:35:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 05:35:43,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 05:35:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 05:35:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 05:35:43,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238943489]
[2020-08-22 05:35:43,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-22 05:35:43,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-08-22 05:35:43,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12004937]
[2020-08-22 05:35:43,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-22 05:35:43,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 05:35:43,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-22 05:35:43,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2020-08-22 05:35:43,440 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 8 states.
[2020-08-22 05:35:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 05:35:43,793 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions.
[2020-08-22 05:35:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2020-08-22 05:35:43,795 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2020-08-22 05:35:43,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 05:35:43,804 INFO L225 Difference]: With dead ends: 55
[2020-08-22 05:35:43,805 INFO L226 Difference]: Without dead ends: 26
[2020-08-22 05:35:43,809 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156
[2020-08-22 05:35:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2020-08-22 05:35:43,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24.
[2020-08-22 05:35:43,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2020-08-22 05:35:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2020-08-22 05:35:43,853 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13
[2020-08-22 05:35:43,854 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-22 05:35:43,854 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2020-08-22 05:35:43,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-22 05:35:43,855 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2020-08-22 05:35:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-08-22 05:35:43,856 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 05:35:43,856 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 05:35:43,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 05:35:43,857 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 05:35:43,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 05:35:43,857 INFO L82 PathProgramCache]: Analyzing trace with hash -519824651, now seen corresponding path program 1 times
[2020-08-22 05:35:43,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 05:35:43,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531423378]
[2020-08-22 05:35:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 05:35:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 05:35:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-22 05:35:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 05:35:44,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-08-22 05:35:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-22 05:35:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-22 05:35:44,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531423378]
[2020-08-22 05:35:44,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-22 05:35:44,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9
[2020-08-22 05:35:44,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116518453]
[2020-08-22 05:35:44,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-08-22 05:35:44,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-22 05:35:44,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-08-22 05:35:44,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2020-08-22 05:35:44,055 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states.
[2020-08-22 05:35:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-22 05:35:44,357 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions.
[2020-08-22 05:35:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-08-22 05:35:44,358 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21
[2020-08-22 05:35:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-22 05:35:44,360 INFO L225 Difference]: With dead ends: 36
[2020-08-22 05:35:44,360 INFO L226 Difference]: Without dead ends: 34
[2020-08-22 05:35:44,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210
[2020-08-22 05:35:44,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2020-08-22 05:35:44,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32.
[2020-08-22 05:35:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2020-08-22 05:35:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions.
[2020-08-22 05:35:44,382 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 21
[2020-08-22 05:35:44,383 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-08-22 05:35:44,383 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions.
[2020-08-22 05:35:44,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-08-22 05:35:44,383 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions.
[2020-08-22 05:35:44,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-08-22 05:35:44,387 INFO L414 BasicCegarLoop]: Found error trace
[2020-08-22 05:35:44,387 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-22 05:35:44,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-22 05:35:44,388 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 05:35:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 05:35:44,389 INFO L82 PathProgramCache]: Analyzing trace with hash -2027370867, now seen corresponding path program 2 times
[2020-08-22 05:35:44,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 05:35:44,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275184559]
[2020-08-22 05:35:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 05:35:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 05:35:44,433 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-22 05:35:44,433 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-08-22 05:35:44,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-22 05:35:44,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:35:44 BoogieIcfgContainer
[2020-08-22 05:35:44,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-22 05:35:44,462 INFO L168 Benchmark]: Toolchain (without parser) took 2346.06 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 101.8 MB in the beginning and 163.1 MB in the end (delta: -61.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 7.1 GB.
[2020-08-22 05:35:44,463 INFO L168 Benchmark]: CDTParser took 0.76 ms. Allocated memory is still 139.5 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-08-22 05:35:44,464 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.79 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 91.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-08-22 05:35:44,465 INFO L168 Benchmark]: Boogie Preprocessor took 127.03 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 179.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB.
[2020-08-22 05:35:44,466 INFO L168 Benchmark]: RCFGBuilder took 357.11 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 164.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB.
[2020-08-22 05:35:44,467 INFO L168 Benchmark]: TraceAbstraction took 1577.39 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 164.0 MB in the beginning and 163.1 MB in the end (delta: 988.6 kB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB.
[2020-08-22 05:35:44,472 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.76 ms. Allocated memory is still 139.5 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 262.79 ms. Allocated memory is still 139.5 MB. Free memory was 101.6 MB in the beginning and 91.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 127.03 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.8 MB in the beginning and 179.6 MB in the end (delta: -87.9 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 357.11 ms. Allocated memory is still 202.4 MB. Free memory was 179.6 MB in the beginning and 164.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1577.39 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 164.0 MB in the beginning and 163.1 MB in the end (delta: 988.6 kB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L12] Char *tmp;
[L29] Char pathbuf[1 +1];
[L31] Char *bound = pathbuf + sizeof(pathbuf) - 1;
[L33] tmp = pathbuf + sizeof(pathbuf)/sizeof(*pathbuf) - 1
[L35] CALL glob2 (pathbuf, bound)
[L16] Char *p;
[L18] p = pathbuf
[L18] COND TRUE p <= pathlim
[L20] CALL __VERIFIER_assert(p<=tmp)
[L4] COND FALSE !(!(cond))
[L20] RET __VERIFIER_assert(p<=tmp)
[L21] *p = 1
[L18] p++
[L18] COND TRUE p <= pathlim
[L20] CALL __VERIFIER_assert(p<=tmp)
[L4] COND FALSE !(!(cond))
[L20] RET __VERIFIER_assert(p<=tmp)
[L21] *p = 1
[L18] p++
[L18] COND TRUE p <= pathlim
[L20] CALL __VERIFIER_assert(p<=tmp)
[L4] COND TRUE !(cond)
[L5] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 74 SDslu, 71 SDs, 0 SdLazy, 189 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2800 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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...