/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=NARROWEST --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/veris.c_NetBSD-libc_loop.i
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 02:19:18,970 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 02:19:18,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 02:19:19,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 02:19:19,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 02:19:19,003 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 02:19:19,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 02:19:19,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 02:19:19,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 02:19:19,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 02:19:19,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 02:19:19,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 02:19:19,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 02:19:19,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 02:19:19,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 02:19:19,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 02:19:19,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 02:19:19,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 02:19:19,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 02:19:19,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 02:19:19,025 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 02:19:19,026 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 02:19:19,027 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 02:19:19,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 02:19:19,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 02:19:19,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 02:19:19,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 02:19:19,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 02:19:19,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 02:19:19,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 02:19:19,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 02:19:19,042 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 02:19:19,043 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 02:19:19,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 02:19:19,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 02:19:19,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 02:19:19,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 02:19:19,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 02:19:19,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 02:19:19,057 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 02:19:19,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 02:19:19,063 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
[2020-09-25 02:19:19,112 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 02:19:19,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 02:19:19,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 02:19:19,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 02:19:19,115 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 02:19:19,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 02:19:19,115 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 02:19:19,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 02:19:19,116 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 02:19:19,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 02:19:19,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 02:19:19,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 02:19:19,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 02:19:19,117 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 02:19:19,117 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 02:19:19,117 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 02:19:19,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 02:19:19,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 02:19:19,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 02:19:19,118 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 02:19:19,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 02:19:19,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 02:19:19,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 02:19:19,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 02:19:19,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 02:19:19,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 02:19:19,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 02:19:19,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 02:19:19,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 02:19:19,120 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true;
[2020-09-25 02:19:19,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 02:19:19,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 02:19:19,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 02:19:19,647 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 02:19:19,648 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 02:19:19,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i
[2020-09-25 02:19:19,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dc18bf86/6dd88964a4b346ec825e309479478330/FLAGef0f2b12d
[2020-09-25 02:19:20,246 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 02:19:20,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i
[2020-09-25 02:19:20,256 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dc18bf86/6dd88964a4b346ec825e309479478330/FLAGef0f2b12d
[2020-09-25 02:19:20,560 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2dc18bf86/6dd88964a4b346ec825e309479478330
[2020-09-25 02:19:20,574 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 02:19:20,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 02:19:20,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 02:19:20,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 02:19:20,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 02:19:20,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:20" (1/1) ...
[2020-09-25 02:19:20,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e57c593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20, skipping insertion in model container
[2020-09-25 02:19:20,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:20" (1/1) ...
[2020-09-25 02:19:20,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 02:19:20,631 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 02:19:20,843 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:19:20,854 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 02:19:20,879 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 02:19:20,897 INFO L208 MainTranslator]: Completed translation
[2020-09-25 02:19:20,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20 WrapperNode
[2020-09-25 02:19:20,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 02:19:20,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 02:19:20,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 02:19:20,899 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 02:19:21,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20" (1/1) ...
[2020-09-25 02:19:21,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20" (1/1) ...
[2020-09-25 02:19:21,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20" (1/1) ...
[2020-09-25 02:19:21,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20" (1/1) ...
[2020-09-25 02:19:21,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20" (1/1) ...
[2020-09-25 02:19:21,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20" (1/1) ...
[2020-09-25 02:19:21,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20" (1/1) ...
[2020-09-25 02:19:21,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 02:19:21,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 02:19:21,028 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 02:19:21,028 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 02:19:21,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20" (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
[2020-09-25 02:19:21,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 02:19:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 02:19:21,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 02:19:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2
[2020-09-25 02:19:21,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 02:19:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 02:19:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 02:19:21,109 INFO L130 BoogieDeclarations]: Found specification of procedure glob2
[2020-09-25 02:19:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 02:19:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 02:19:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 02:19:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 02:19:21,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 02:19:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 02:19:21,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 02:19:21,400 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 02:19:21,400 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 02:19:21,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:21 BoogieIcfgContainer
[2020-09-25 02:19:21,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 02:19:21,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 02:19:21,418 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 02:19:21,428 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 02:19:21,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:20" (1/3) ...
[2020-09-25 02:19:21,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c64be2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:21, skipping insertion in model container
[2020-09-25 02:19:21,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:20" (2/3) ...
[2020-09-25 02:19:21,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c64be2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:21, skipping insertion in model container
[2020-09-25 02:19:21,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:21" (3/3) ...
[2020-09-25 02:19:21,433 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i
[2020-09-25 02:19:21,442 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 02:19:21,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 02:19:21,471 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 02:19:21,500 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 02:19:21,500 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 02:19:21,500 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 02:19:21,500 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 02:19:21,500 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 02:19:21,500 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 02:19:21,500 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 02:19:21,501 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 02:19:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states.
[2020-09-25 02:19:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-09-25 02:19:21,532 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:19:21,533 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]
[2020-09-25 02:19:21,534 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:19:21,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:19:21,541 INFO L82 PathProgramCache]: Analyzing trace with hash -331406787, now seen corresponding path program 1 times
[2020-09-25 02:19:21,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:19:21,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95776193]
[2020-09-25 02:19:21,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:19:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:21,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:21,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:23,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:23,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32
[2020-09-25 02:19:23,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:19:23,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1285
[2020-09-25 02:19:23,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:23,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 02:19:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-25 02:19:23,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-09-25 02:19:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5
[2020-09-25 02:19:23,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:19:23,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:23,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:23,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 02:19:23,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-25 02:19:23,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:19:23,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:23,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:19:23,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:19:23,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 02:19:23,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95776193]
[2020-09-25 02:19:23,388 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:19:23,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-09-25 02:19:23,390 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289271970]
[2020-09-25 02:19:23,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 02:19:23,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:19:23,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 02:19:23,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2020-09-25 02:19:23,425 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 9 states.
[2020-09-25 02:19:23,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:19:23,934 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions.
[2020-09-25 02:19:23,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-25 02:19:23,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21
[2020-09-25 02:19:23,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:19:23,947 INFO L225 Difference]: With dead ends: 76
[2020-09-25 02:19:23,948 INFO L226 Difference]: Without dead ends: 37
[2020-09-25 02:19:23,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210
[2020-09-25 02:19:23,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2020-09-25 02:19:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34.
[2020-09-25 02:19:24,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-09-25 02:19:24,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions.
[2020-09-25 02:19:24,004 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 21
[2020-09-25 02:19:24,004 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:19:24,005 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions.
[2020-09-25 02:19:24,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 02:19:24,005 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions.
[2020-09-25 02:19:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2020-09-25 02:19:24,006 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:19:24,006 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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]
[2020-09-25 02:19:24,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 02:19:24,007 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:19:24,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:19:24,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1840112204, now seen corresponding path program 1 times
[2020-09-25 02:19:24,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:19:24,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993856421]
[2020-09-25 02:19:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:19:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:24,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:24,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:24,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:24,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44
[2020-09-25 02:19:24,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 02:19:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844
[2020-09-25 02:19:24,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 02:19:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-25 02:19:24,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-25 02:19:24,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12
[2020-09-25 02:19:25,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:19:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:25,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:25,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:25,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 02:19:25,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:25,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 02:19:25,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:19:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:25,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:19:25,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:19:25,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-09-25 02:19:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:25,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:25,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 02:19:25,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:25,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-25 02:19:25,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 02:19:25,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 02:19:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:19:25,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 02:19:25,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993856421]
[2020-09-25 02:19:25,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 02:19:25,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 02:19:25,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624601477]
[2020-09-25 02:19:25,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 02:19:25,110 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:19:25,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 02:19:25,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2020-09-25 02:19:25,111 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 11 states.
[2020-09-25 02:19:25,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:19:25,661 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions.
[2020-09-25 02:19:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-09-25 02:19:25,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31
[2020-09-25 02:19:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:19:25,666 INFO L225 Difference]: With dead ends: 49
[2020-09-25 02:19:25,666 INFO L226 Difference]: Without dead ends: 47
[2020-09-25 02:19:25,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342
[2020-09-25 02:19:25,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2020-09-25 02:19:25,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44.
[2020-09-25 02:19:25,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-09-25 02:19:25,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions.
[2020-09-25 02:19:25,689 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 31
[2020-09-25 02:19:25,689 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:19:25,690 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions.
[2020-09-25 02:19:25,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 02:19:25,690 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions.
[2020-09-25 02:19:25,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-09-25 02:19:25,692 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 02:19:25,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 02:19:25,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 02:19:25,693 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 02:19:25,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 02:19:25,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1122821221, now seen corresponding path program 2 times
[2020-09-25 02:19:25,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 02:19:25,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1706469318]
[2020-09-25 02:19:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 02:19:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:25,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:26,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:27,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:27,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-25 02:19:27,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 02:19:27,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1949
[2020-09-25 02:19:27,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10
[2020-09-25 02:19:27,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16
[2020-09-25 02:19:27,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34
[2020-09-25 02:19:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:19:27,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 02:19:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:27,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:27,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:27,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 02:19:27,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:27,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7
[2020-09-25 02:19:27,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 02:19:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:27,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 02:19:27,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 02:19:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-09-25 02:19:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:27,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:27,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 02:19:27,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 02:19:27,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 02:19:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 02:19:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:19:27,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2020-09-25 02:19:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 02:19:27,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 02:19:27,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 02:19:27,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 02:19:27,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 02:19:27,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12
[2020-09-25 02:19:27,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST
[2020-09-25 02:19:27,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 02:19:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 02:19:27,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 02:19:27,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 02:19:27,863 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2020-09-25 02:19:27,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1706469318]
[2020-09-25 02:19:27,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 02:19:27,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2020-09-25 02:19:27,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448703122]
[2020-09-25 02:19:27,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2020-09-25 02:19:27,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 02:19:27,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2020-09-25 02:19:27,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132
[2020-09-25 02:19:27,867 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 12 states.
[2020-09-25 02:19:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 02:19:28,358 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions.
[2020-09-25 02:19:28,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2020-09-25 02:19:28,359 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41
[2020-09-25 02:19:28,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 02:19:28,360 INFO L225 Difference]: With dead ends: 49
[2020-09-25 02:19:28,360 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 02:19:28,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462
[2020-09-25 02:19:28,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 02:19:28,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 02:19:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 02:19:28,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 02:19:28,363 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41
[2020-09-25 02:19:28,363 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 02:19:28,363 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 02:19:28,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2020-09-25 02:19:28,364 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 02:19:28,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 02:19:28,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 02:19:28,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 02:19:28,708 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35
[2020-09-25 02:19:28,880 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32
[2020-09-25 02:19:28,884 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed.
[2020-09-25 02:19:28,884 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed.
[2020-09-25 02:19:28,884 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 02:19:28,884 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-25 02:19:28,885 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~tmp~0.base |old(~tmp~0.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|))
[2020-09-25 02:19:28,885 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 02:19:28,885 INFO L271 CegarLoopResult]: At program point glob2ENTRY(lines 14 25) the Hoare annotation is: true
[2020-09-25 02:19:28,886 INFO L268 CegarLoopResult]: For program point L21(lines 18 22) no Hoare annotation was computed.
[2020-09-25 02:19:28,886 INFO L268 CegarLoopResult]: For program point glob2EXIT(lines 14 25) no Hoare annotation was computed.
[2020-09-25 02:19:28,886 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse7 (+ glob2_~pathbuf.offset 4))) (let ((.cse0 (<= |glob2_#in~pathlim.offset| .cse7)) (.cse1 (<= .cse7 ~tmp~0.offset)) (.cse2 (= ~tmp~0.base glob2_~p~0.base)) (.cse3 (<= glob2_~pathlim.offset .cse7)) (.cse4 (= ~tmp~0.base glob2_~pathbuf.base)) (.cse5 (+ |glob2_#in~pathbuf.offset| 4))) (or (and .cse0 .cse1 (<= glob2_~p~0.offset ~tmp~0.offset) .cse2 .cse3 (<= glob2_~pathlim.offset glob2_~p~0.offset) .cse4) (not (<= |glob2_#in~pathlim.offset| .cse5)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (let ((.cse6 (+ glob2_~p~0.offset 4))) (and .cse0 .cse1 (<= .cse6 ~tmp~0.offset) (<= glob2_~pathlim.offset .cse6) .cse2 .cse3 .cse4)) (not (<= .cse5 ~tmp~0.offset)))))
[2020-09-25 02:19:28,886 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed.
[2020-09-25 02:19:28,887 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-25 02:19:28,887 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-25 02:19:28,887 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed.
[2020-09-25 02:19:28,887 INFO L268 CegarLoopResult]: For program point L14(lines 14 25) no Hoare annotation was computed.
[2020-09-25 02:19:28,887 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed.
[2020-09-25 02:19:28,888 INFO L264 CegarLoopResult]: At program point L18-5(lines 18 22) the Hoare annotation is: (let ((.cse7 (+ glob2_~pathbuf.offset 4))) (let ((.cse0 (<= |glob2_#in~pathlim.offset| .cse7)) (.cse1 (<= .cse7 ~tmp~0.offset)) (.cse2 (= ~tmp~0.base glob2_~p~0.base)) (.cse3 (<= glob2_~pathlim.offset .cse7)) (.cse4 (= ~tmp~0.base glob2_~pathbuf.base)) (.cse5 (+ |glob2_#in~pathbuf.offset| 4))) (or (and .cse0 .cse1 (<= glob2_~p~0.offset ~tmp~0.offset) .cse2 .cse3 (<= glob2_~pathlim.offset glob2_~p~0.offset) .cse4) (not (<= |glob2_#in~pathlim.offset| .cse5)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (and .cse0 .cse1 (<= (+ glob2_~pathlim.offset 4) glob2_~p~0.offset) .cse3 .cse4) (let ((.cse6 (+ glob2_~p~0.offset 4))) (and .cse0 .cse1 (<= .cse6 ~tmp~0.offset) (<= glob2_~pathlim.offset .cse6) .cse2 .cse3 .cse4)) (not (<= .cse5 ~tmp~0.offset)))))
[2020-09-25 02:19:28,888 INFO L268 CegarLoopResult]: For program point L18-6(lines 18 22) no Hoare annotation was computed.
[2020-09-25 02:19:28,888 INFO L268 CegarLoopResult]: For program point glob2FINAL(lines 14 25) no Hoare annotation was computed.
[2020-09-25 02:19:28,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 02:19:28,889 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 02:19:28,889 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 02:19:28,889 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 02:19:28,890 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed.
[2020-09-25 02:19:28,890 INFO L268 CegarLoopResult]: For program point L35-2(line 35) no Hoare annotation was computed.
[2020-09-25 02:19:28,890 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 38) the Hoare annotation is: (and (= |old(~tmp~0.base)| ~tmp~0.base) (= ~tmp~0.offset |old(~tmp~0.offset)|) (= |old(#valid)| |#valid|))
[2020-09-25 02:19:28,891 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed.
[2020-09-25 02:19:28,891 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 38) no Hoare annotation was computed.
[2020-09-25 02:19:28,891 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed.
[2020-09-25 02:19:28,891 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed.
[2020-09-25 02:19:28,892 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 38) no Hoare annotation was computed.
[2020-09-25 02:19:28,892 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed.
[2020-09-25 02:19:28,892 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (+ |main_~#pathbuf~0.offset| 4))) (and (<= .cse0 ~tmp~0.offset) (= ~tmp~0.base |main_~#pathbuf~0.base|) (= main_~bound~0.offset .cse0)))
[2020-09-25 02:19:28,893 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed.
[2020-09-25 02:19:28,893 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true
[2020-09-25 02:19:28,893 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed.
[2020-09-25 02:19:28,893 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-25 02:19:28,894 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed.
[2020-09-25 02:19:28,894 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed.
[2020-09-25 02:19:28,894 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed.
[2020-09-25 02:19:28,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:19:28 BoogieIcfgContainer
[2020-09-25 02:19:28,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 02:19:28,952 INFO L168 Benchmark]: Toolchain (without parser) took 8374.07 ms. Allocated memory was 146.8 MB in the beginning and 276.8 MB in the end (delta: 130.0 MB). Free memory was 101.6 MB in the beginning and 250.6 MB in the end (delta: -149.0 MB). Peak memory consumption was 133.1 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:28,953 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-25 02:19:28,955 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.56 ms. Allocated memory is still 146.8 MB. Free memory was 101.0 MB in the beginning and 91.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:28,957 INFO L168 Benchmark]: Boogie Preprocessor took 128.60 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 91.1 MB in the beginning and 180.8 MB in the end (delta: -89.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:28,959 INFO L168 Benchmark]: RCFGBuilder took 386.84 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 165.0 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:28,966 INFO L168 Benchmark]: TraceAbstraction took 7529.98 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 165.0 MB in the beginning and 250.6 MB in the end (delta: -85.6 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB.
[2020-09-25 02:19:28,977 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 316.56 ms. Allocated memory is still 146.8 MB. Free memory was 101.0 MB in the beginning and 91.1 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 128.60 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 91.1 MB in the beginning and 180.8 MB in the end (delta: -89.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 386.84 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 165.0 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 7529.98 ms. Allocated memory was 203.4 MB in the beginning and 276.8 MB in the end (delta: 73.4 MB). Free memory was 165.0 MB in the beginning and 250.6 MB in the end (delta: -85.6 MB). Peak memory consumption was 140.0 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable
For all program executions holds that call of __VERIFIER_error() unreachable at this location
- AllSpecificationsHoldResult: All specifications hold
1 specifications checked. All of them hold
- InvariantResult [Line: 18]: Loop Invariant
Derived loop invariant: ((((((((((pathlim <= pathbuf + 4 && pathbuf + 4 <= tmp) && p <= tmp) && tmp == p) && pathlim <= pathbuf + 4) && pathlim <= p) && tmp == pathbuf) || !(pathlim <= pathbuf + 4)) || !(tmp == pathbuf)) || ((((pathlim <= pathbuf + 4 && pathbuf + 4 <= tmp) && pathlim + 4 <= p) && pathlim <= pathbuf + 4) && tmp == pathbuf)) || ((((((pathlim <= pathbuf + 4 && pathbuf + 4 <= tmp) && p + 4 <= tmp) && pathlim <= p + 4) && tmp == p) && pathlim <= pathbuf + 4) && tmp == pathbuf)) || !(pathbuf + 4 <= tmp)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 177 SDslu, 246 SDs, 0 SdLazy, 388 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 222 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 246 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 11110 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 20/22 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 correct!
Received shutdown request...