/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=DEEPEST --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 01:10:01,247 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 01:10:01,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 01:10:01,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 01:10:01,302 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 01:10:01,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 01:10:01,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 01:10:01,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 01:10:01,320 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 01:10:01,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 01:10:01,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 01:10:01,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 01:10:01,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 01:10:01,329 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 01:10:01,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 01:10:01,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 01:10:01,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 01:10:01,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 01:10:01,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 01:10:01,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 01:10:01,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 01:10:01,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 01:10:01,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 01:10:01,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 01:10:01,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 01:10:01,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 01:10:01,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 01:10:01,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 01:10:01,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 01:10:01,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 01:10:01,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 01:10:01,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 01:10:01,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 01:10:01,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 01:10:01,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 01:10:01,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 01:10:01,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 01:10:01,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 01:10:01,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 01:10:01,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 01:10:01,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 01:10:01,390 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 01:10:01,441 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 01:10:01,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 01:10:01,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 01:10:01,444 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 01:10:01,444 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 01:10:01,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 01:10:01,445 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 01:10:01,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 01:10:01,445 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 01:10:01,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 01:10:01,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 01:10:01,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 01:10:01,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 01:10:01,447 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 01:10:01,448 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 01:10:01,448 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 01:10:01,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 01:10:01,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 01:10:01,449 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 01:10:01,449 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 01:10:01,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 01:10:01,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 01:10:01,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 01:10:01,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 01:10:01,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 01:10:01,450 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 01:10:01,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 01:10:01,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 01:10:01,451 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 01:10:01,451 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true;
[2020-09-25 01:10:02,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 01:10:02,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 01:10:02,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 01:10:02,103 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 01:10:02,104 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 01:10:02,105 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i
[2020-09-25 01:10:02,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2bc2a703/9a9f5b1b77ae473faffa93acf34ae968/FLAGfaa4be2b5
[2020-09-25 01:10:02,821 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 01:10:02,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/veris.c_NetBSD-libc_loop.i
[2020-09-25 01:10:02,832 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2bc2a703/9a9f5b1b77ae473faffa93acf34ae968/FLAGfaa4be2b5
[2020-09-25 01:10:03,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2bc2a703/9a9f5b1b77ae473faffa93acf34ae968
[2020-09-25 01:10:03,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 01:10:03,130 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 01:10:03,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 01:10:03,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 01:10:03,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 01:10:03,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:03" (1/1) ...
[2020-09-25 01:10:03,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f284b94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03, skipping insertion in model container
[2020-09-25 01:10:03,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:10:03" (1/1) ...
[2020-09-25 01:10:03,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 01:10:03,188 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 01:10:03,430 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 01:10:03,442 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 01:10:03,460 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 01:10:03,477 INFO L208 MainTranslator]: Completed translation
[2020-09-25 01:10:03,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03 WrapperNode
[2020-09-25 01:10:03,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 01:10:03,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 01:10:03,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 01:10:03,479 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 01:10:03,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03" (1/1) ...
[2020-09-25 01:10:03,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03" (1/1) ...
[2020-09-25 01:10:03,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03" (1/1) ...
[2020-09-25 01:10:03,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03" (1/1) ...
[2020-09-25 01:10:03,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03" (1/1) ...
[2020-09-25 01:10:03,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03" (1/1) ...
[2020-09-25 01:10:03,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03" (1/1) ...
[2020-09-25 01:10:03,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 01:10:03,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 01:10:03,632 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 01:10:03,632 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 01:10:03,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03" (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 01:10:03,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 01:10:03,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 01:10:03,717 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert
[2020-09-25 01:10:03,717 INFO L138 BoogieDeclarations]: Found implementation of procedure glob2
[2020-09-25 01:10:03,718 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 01:10:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 01:10:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert
[2020-09-25 01:10:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure glob2
[2020-09-25 01:10:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 01:10:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 01:10:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 01:10:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 01:10:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 01:10:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 01:10:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 01:10:04,055 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 01:10:04,055 INFO L295 CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-25 01:10:04,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:04 BoogieIcfgContainer
[2020-09-25 01:10:04,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 01:10:04,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 01:10:04,062 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 01:10:04,066 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 01:10:04,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:10:03" (1/3) ...
[2020-09-25 01:10:04,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eea4192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:04, skipping insertion in model container
[2020-09-25 01:10:04,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:10:03" (2/3) ...
[2020-09-25 01:10:04,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eea4192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:10:04, skipping insertion in model container
[2020-09-25 01:10:04,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:10:04" (3/3) ...
[2020-09-25 01:10:04,071 INFO L109 eAbstractionObserver]: Analyzing ICFG veris.c_NetBSD-libc_loop.i
[2020-09-25 01:10:04,082 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 01:10:04,092 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 01:10:04,117 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 01:10:04,148 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 01:10:04,149 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 01:10:04,149 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 01:10:04,149 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 01:10:04,149 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 01:10:04,149 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 01:10:04,149 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 01:10:04,150 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 01:10:04,172 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states.
[2020-09-25 01:10:04,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-09-25 01:10:04,179 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 01:10:04,180 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 01:10:04,181 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 01:10:04,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 01:10:04,187 INFO L82 PathProgramCache]: Analyzing trace with hash -331406787, now seen corresponding path program 1 times
[2020-09-25 01:10:04,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 01:10:04,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955069694]
[2020-09-25 01:10:04,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 01:10:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:10:04,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:04,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:05,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:10:05,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32
[2020-09-25 01:10:05,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 01:10:05,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1231
[2020-09-25 01:10:05,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:10:05,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-25 01:10:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-25 01:10:05,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14
[2020-09-25 01:10:05,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4
[2020-09-25 01:10:05,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 01:10:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:10:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:05,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:10:05,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 01:10:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 01:10:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9
[2020-09-25 01:10:05,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:10:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 01:10:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 01:10:05,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 01:10:05,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:10:05,964 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 01:10:05,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955069694]
[2020-09-25 01:10:05,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 01:10:05,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2020-09-25 01:10:05,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739755203]
[2020-09-25 01:10:05,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2020-09-25 01:10:05,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 01:10:05,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2020-09-25 01:10:05,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2020-09-25 01:10:05,999 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 9 states.
[2020-09-25 01:10:06,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 01:10:06,679 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions.
[2020-09-25 01:10:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2020-09-25 01:10:06,682 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21
[2020-09-25 01:10:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 01:10:06,697 INFO L225 Difference]: With dead ends: 76
[2020-09-25 01:10:06,697 INFO L226 Difference]: Without dead ends: 37
[2020-09-25 01:10:06,705 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 01:10:06,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2020-09-25 01:10:06,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34.
[2020-09-25 01:10:06,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2020-09-25 01:10:06,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions.
[2020-09-25 01:10:06,766 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 21
[2020-09-25 01:10:06,767 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 01:10:06,767 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions.
[2020-09-25 01:10:06,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2020-09-25 01:10:06,767 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions.
[2020-09-25 01:10:06,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2020-09-25 01:10:06,769 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 01:10:06,769 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 01:10:06,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 01:10:06,770 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 01:10:06,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 01:10:06,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1840112204, now seen corresponding path program 1 times
[2020-09-25 01:10:06,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 01:10:06,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140179044]
[2020-09-25 01:10:06,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 01:10:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:10:06,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:07,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:10:07,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44
[2020-09-25 01:10:07,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 01:10:07,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 785
[2020-09-25 01:10:07,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:10:07,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9
[2020-09-25 01:10:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17
[2020-09-25 01:10:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-25 01:10:07,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:10:07,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 01:10:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:10:07,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:07,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:10:07,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 01:10:07,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 01:10:07,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-09-25 01:10:07,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:10:07,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 01:10:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 01:10:07,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 01:10:07,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:10:07,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-09-25 01:10:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:10:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:07,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:10:07,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 01:10:07,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 01:10:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17
[2020-09-25 01:10:07,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:10:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 01:10:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 01:10:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 01:10:07,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:10:07,860 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 01:10:07,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140179044]
[2020-09-25 01:10:07,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 01:10:07,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11
[2020-09-25 01:10:07,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280721442]
[2020-09-25 01:10:07,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2020-09-25 01:10:07,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 01:10:07,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2020-09-25 01:10:07,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110
[2020-09-25 01:10:07,866 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 11 states.
[2020-09-25 01:10:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 01:10:08,501 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions.
[2020-09-25 01:10:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2020-09-25 01:10:08,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31
[2020-09-25 01:10:08,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 01:10:08,504 INFO L225 Difference]: With dead ends: 49
[2020-09-25 01:10:08,504 INFO L226 Difference]: Without dead ends: 47
[2020-09-25 01:10:08,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342
[2020-09-25 01:10:08,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2020-09-25 01:10:08,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44.
[2020-09-25 01:10:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-09-25 01:10:08,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions.
[2020-09-25 01:10:08,516 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 31
[2020-09-25 01:10:08,516 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 01:10:08,517 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions.
[2020-09-25 01:10:08,517 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2020-09-25 01:10:08,517 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions.
[2020-09-25 01:10:08,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-09-25 01:10:08,519 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 01:10:08,519 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 01:10:08,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 01:10:08,519 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 01:10:08,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 01:10:08,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1122821221, now seen corresponding path program 2 times
[2020-09-25 01:10:08,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 01:10:08,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341023467]
[2020-09-25 01:10:08,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 01:10:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:10:08,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:08,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:09,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:10,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:10:10,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-09-25 01:10:10,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-09-25 01:10:10,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2034
[2020-09-25 01:10:10,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:10:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14
[2020-09-25 01:10:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16
[2020-09-25 01:10:10,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39
[2020-09-25 01:10:10,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:10:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 01:10:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:10:10,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:10,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:10:10,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12
[2020-09-25 01:10:10,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 01:10:10,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-09-25 01:10:10,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:10:10,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 01:10:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 01:10:10,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 01:10:10,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:10:10,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17
[2020-09-25 01:10:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:10:10,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:10,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:10:10,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 01:10:10,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 01:10:10,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-25 01:10:10,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:10:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-09-25 01:10:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 01:10:10,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6
[2020-09-25 01:10:10,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:10:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2020-09-25 01:10:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 01:10:10,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 01:10:10,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 01:10:10,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10
[2020-09-25 01:10:10,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 01:10:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18
[2020-09-25 01:10:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST
[2020-09-25 01:10:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5
[2020-09-25 01:10:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 01:10:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-25 01:10:10,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 01:10:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-09-25 01:10:11,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341023467]
[2020-09-25 01:10:11,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-25 01:10:11,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15
[2020-09-25 01:10:11,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347847246]
[2020-09-25 01:10:11,029 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states
[2020-09-25 01:10:11,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 01:10:11,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2020-09-25 01:10:11,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210
[2020-09-25 01:10:11,031 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 15 states.
[2020-09-25 01:10:12,017 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44
[2020-09-25 01:10:12,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 01:10:12,207 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions.
[2020-09-25 01:10:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2020-09-25 01:10:12,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41
[2020-09-25 01:10:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 01:10:12,209 INFO L225 Difference]: With dead ends: 44
[2020-09-25 01:10:12,209 INFO L226 Difference]: Without dead ends: 0
[2020-09-25 01:10:12,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=194, Invalid=676, Unknown=0, NotChecked=0, Total=870
[2020-09-25 01:10:12,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-25 01:10:12,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-25 01:10:12,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-25 01:10:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-25 01:10:12,211 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41
[2020-09-25 01:10:12,211 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 01:10:12,212 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-25 01:10:12,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2020-09-25 01:10:12,212 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-25 01:10:12,212 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-25 01:10:12,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 01:10:12,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-25 01:10:12,625 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37
[2020-09-25 01:10:12,841 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37
[2020-09-25 01:10:12,844 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed.
[2020-09-25 01:10:12,844 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed.
[2020-09-25 01:10:12,844 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 01:10:12,844 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed.
[2020-09-25 01:10:12,845 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 01:10:12,845 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 01:10:12,845 INFO L271 CegarLoopResult]: At program point glob2ENTRY(lines 14 25) the Hoare annotation is: true
[2020-09-25 01:10:12,846 INFO L268 CegarLoopResult]: For program point L21(lines 18 22) no Hoare annotation was computed.
[2020-09-25 01:10:12,846 INFO L268 CegarLoopResult]: For program point glob2EXIT(lines 14 25) no Hoare annotation was computed.
[2020-09-25 01:10:12,846 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse8 (+ glob2_~pathbuf.offset 4))) (let ((.cse0 (+ |glob2_#in~pathbuf.offset| 4)) (.cse1 (<= |glob2_#in~pathlim.offset| .cse8)) (.cse2 (<= .cse8 ~tmp~0.offset)) (.cse4 (= |glob2_#in~pathlim.base| glob2_~pathbuf.base)) (.cse5 (= glob2_~pathlim.base glob2_~pathbuf.base)) (.cse6 (= ~tmp~0.base glob2_~p~0.base)) (.cse7 (<= glob2_~pathlim.offset .cse8))) (or (not (<= |glob2_#in~pathlim.offset| .cse0)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (let ((.cse3 (+ glob2_~p~0.offset 4))) (and .cse1 .cse2 (<= .cse3 ~tmp~0.offset) .cse4 .cse5 (<= glob2_~pathlim.offset .cse3) .cse6 .cse7)) (not (<= .cse0 ~tmp~0.offset)) (not (= |glob2_#in~pathlim.base| |glob2_#in~pathbuf.base|)) (and .cse1 .cse2 (<= glob2_~p~0.offset ~tmp~0.offset) .cse4 .cse5 .cse6 .cse7 (<= glob2_~pathlim.offset glob2_~p~0.offset)))))
[2020-09-25 01:10:12,846 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed.
[2020-09-25 01:10:12,846 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed.
[2020-09-25 01:10:12,847 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed.
[2020-09-25 01:10:12,847 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed.
[2020-09-25 01:10:12,847 INFO L268 CegarLoopResult]: For program point L14(lines 14 25) no Hoare annotation was computed.
[2020-09-25 01:10:12,847 INFO L268 CegarLoopResult]: For program point L18-4(line 18) no Hoare annotation was computed.
[2020-09-25 01:10:12,847 INFO L264 CegarLoopResult]: At program point L18-5(lines 18 22) the Hoare annotation is: (let ((.cse7 (+ glob2_~pathbuf.offset 4))) (let ((.cse1 (<= |glob2_#in~pathlim.offset| .cse7)) (.cse2 (<= .cse7 ~tmp~0.offset)) (.cse3 (= |glob2_#in~pathlim.base| glob2_~pathbuf.base)) (.cse4 (= glob2_~pathlim.base glob2_~pathbuf.base)) (.cse5 (<= glob2_~pathlim.offset .cse7)) (.cse0 (+ |glob2_#in~pathbuf.offset| 4))) (or (not (<= |glob2_#in~pathlim.offset| .cse0)) (not (= ~tmp~0.base |glob2_#in~pathbuf.base|)) (and (= glob2_~pathlim.base glob2_~p~0.base) .cse1 .cse2 .cse3 .cse4 .cse5 (<= glob2_~pathlim.offset glob2_~p~0.offset)) (let ((.cse6 (+ glob2_~p~0.offset 4))) (and .cse1 .cse2 (<= .cse6 ~tmp~0.offset) .cse3 .cse4 (<= glob2_~pathlim.offset .cse6) (= ~tmp~0.base glob2_~p~0.base) .cse5)) (not (<= .cse0 ~tmp~0.offset)) (not (= |glob2_#in~pathlim.base| |glob2_#in~pathbuf.base|)))))
[2020-09-25 01:10:12,848 INFO L268 CegarLoopResult]: For program point L18-6(lines 18 22) no Hoare annotation was computed.
[2020-09-25 01:10:12,848 INFO L268 CegarLoopResult]: For program point glob2FINAL(lines 14 25) no Hoare annotation was computed.
[2020-09-25 01:10:12,848 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-25 01:10:12,848 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-25 01:10:12,848 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-25 01:10:12,848 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-25 01:10:12,848 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed.
[2020-09-25 01:10:12,849 INFO L268 CegarLoopResult]: For program point L35-2(line 35) no Hoare annotation was computed.
[2020-09-25 01:10:12,849 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 01:10:12,849 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed.
[2020-09-25 01:10:12,849 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 38) no Hoare annotation was computed.
[2020-09-25 01:10:12,849 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed.
[2020-09-25 01:10:12,849 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed.
[2020-09-25 01:10:12,850 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 38) no Hoare annotation was computed.
[2020-09-25 01:10:12,850 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed.
[2020-09-25 01:10:12,850 INFO L264 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (+ |main_~#pathbuf~0.offset| 4))) (and (<= main_~bound~0.offset .cse0) (<= .cse0 ~tmp~0.offset) (= ~tmp~0.base |main_~#pathbuf~0.base|) (= |main_~#pathbuf~0.base| main_~bound~0.base)))
[2020-09-25 01:10:12,850 INFO L268 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed.
[2020-09-25 01:10:12,850 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true
[2020-09-25 01:10:12,851 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed.
[2020-09-25 01:10:12,851 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed.
[2020-09-25 01:10:12,851 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed.
[2020-09-25 01:10:12,851 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed.
[2020-09-25 01:10:12,851 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed.
[2020-09-25 01:10:12,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:10:12 BoogieIcfgContainer
[2020-09-25 01:10:12,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 01:10:12,885 INFO L168 Benchmark]: Toolchain (without parser) took 9758.60 ms. Allocated memory was 141.6 MB in the beginning and 278.9 MB in the end (delta: 137.4 MB). Free memory was 104.4 MB in the beginning and 125.1 MB in the end (delta: -20.7 MB). Peak memory consumption was 116.6 MB. Max. memory is 7.1 GB.
[2020-09-25 01:10:12,886 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
[2020-09-25 01:10:12,887 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.70 ms. Allocated memory is still 141.6 MB. Free memory was 103.7 MB in the beginning and 94.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
[2020-09-25 01:10:12,888 INFO L168 Benchmark]: Boogie Preprocessor took 152.88 ms. Allocated memory was 141.6 MB in the beginning and 202.4 MB in the end (delta: 60.8 MB). Free memory was 94.0 MB in the beginning and 179.8 MB in the end (delta: -85.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB.
[2020-09-25 01:10:12,889 INFO L168 Benchmark]: RCFGBuilder took 429.33 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 164.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB.
[2020-09-25 01:10:12,891 INFO L168 Benchmark]: TraceAbstraction took 8819.74 ms. Allocated memory was 202.4 MB in the beginning and 278.9 MB in the end (delta: 76.5 MB). Free memory was 163.7 MB in the beginning and 125.1 MB in the end (delta: 38.5 MB). Peak memory consumption was 115.1 MB. Max. memory is 7.1 GB.
[2020-09-25 01:10:12,895 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.26 ms. Allocated memory is still 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 343.70 ms. Allocated memory is still 141.6 MB. Free memory was 103.7 MB in the beginning and 94.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 152.88 ms. Allocated memory was 141.6 MB in the beginning and 202.4 MB in the end (delta: 60.8 MB). Free memory was 94.0 MB in the beginning and 179.8 MB in the end (delta: -85.8 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 429.33 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 164.3 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 8819.74 ms. Allocated memory was 202.4 MB in the beginning and 278.9 MB in the end (delta: 76.5 MB). Free memory was 163.7 MB in the beginning and 125.1 MB in the end (delta: 38.5 MB). Peak memory consumption was 115.1 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) || !(tmp == pathbuf)) || ((((((pathlim == p && pathlim <= pathbuf + 4) && pathbuf + 4 <= tmp) && pathlim == pathbuf) && pathlim == pathbuf) && pathlim <= pathbuf + 4) && pathlim <= p)) || (((((((pathlim <= pathbuf + 4 && pathbuf + 4 <= tmp) && p + 4 <= tmp) && pathlim == pathbuf) && pathlim == pathbuf) && pathlim <= p + 4) && tmp == p) && pathlim <= pathbuf + 4)) || !(pathbuf + 4 <= tmp)) || !(pathlim == pathbuf)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 64 SDtfs, 185 SDslu, 304 SDs, 0 SdLazy, 513 SolverSat, 60 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 2.1s 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, 18 NumberOfFragments, 218 HoareAnnotationTreeSize, 12 FomulaSimplifications, 74 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 356 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 14790 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 11/22 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...