/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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-regression/signextension-2.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 15:56:35,189 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 15:56:35,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 15:56:35,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 15:56:35,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 15:56:35,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 15:56:35,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 15:56:35,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 15:56:35,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 15:56:35,228 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 15:56:35,229 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 15:56:35,231 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 15:56:35,231 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 15:56:35,232 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 15:56:35,233 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 15:56:35,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 15:56:35,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 15:56:35,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 15:56:35,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 15:56:35,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 15:56:35,242 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 15:56:35,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 15:56:35,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 15:56:35,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 15:56:35,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 15:56:35,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 15:56:35,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 15:56:35,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 15:56:35,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 15:56:35,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 15:56:35,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 15:56:35,260 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 15:56:35,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 15:56:35,262 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 15:56:35,263 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 15:56:35,263 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 15:56:35,264 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 15:56:35,265 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 15:56:35,265 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 15:56:35,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 15:56:35,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 15:56:35,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 15:56:35,329 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 15:56:35,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 15:56:35,332 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 15:56:35,333 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 15:56:35,333 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 15:56:35,333 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 15:56:35,333 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 15:56:35,334 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 15:56:35,334 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 15:56:35,334 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 15:56:35,335 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 15:56:35,335 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 15:56:35,335 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 15:56:35,336 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 15:56:35,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 15:56:35,337 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 15:56:35,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 15:56:35,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 15:56:35,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 15:56:35,338 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 15:56:35,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 15:56:35,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 15:56:35,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 15:56:35,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 15:56:35,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 15:56:35,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 15:56:35,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 15:56:35,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 15:56:35,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 15:56:35,340 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true;
[2020-09-24 15:56:35,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 15:56:35,905 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 15:56:35,910 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 15:56:35,912 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 15:56:35,913 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 15:56:35,915 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/signextension-2.c
[2020-09-24 15:56:36,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39723af3b/237fa411bad4468ba8507c5c512f8afb/FLAG54ef38f86
[2020-09-24 15:56:36,561 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 15:56:36,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/signextension-2.c
[2020-09-24 15:56:36,568 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39723af3b/237fa411bad4468ba8507c5c512f8afb/FLAG54ef38f86
[2020-09-24 15:56:36,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39723af3b/237fa411bad4468ba8507c5c512f8afb
[2020-09-24 15:56:36,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 15:56:36,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 15:56:36,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 15:56:36,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 15:56:36,932 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 15:56:36,933 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:56:36" (1/1) ...
[2020-09-24 15:56:36,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45214687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36, skipping insertion in model container
[2020-09-24 15:56:36,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:56:36" (1/1) ...
[2020-09-24 15:56:36,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 15:56:36,971 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 15:56:37,185 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:56:37,192 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 15:56:37,214 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:56:37,232 INFO L208 MainTranslator]: Completed translation
[2020-09-24 15:56:37,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37 WrapperNode
[2020-09-24 15:56:37,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 15:56:37,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 15:56:37,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 15:56:37,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 15:56:37,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37" (1/1) ...
[2020-09-24 15:56:37,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37" (1/1) ...
[2020-09-24 15:56:37,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37" (1/1) ...
[2020-09-24 15:56:37,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37" (1/1) ...
[2020-09-24 15:56:37,263 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37" (1/1) ...
[2020-09-24 15:56:37,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37" (1/1) ...
[2020-09-24 15:56:37,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37" (1/1) ...
[2020-09-24 15:56:37,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 15:56:37,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 15:56:37,269 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 15:56:37,269 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 15:56:37,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 15:56:37,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 15:56:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 15:56:37,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 15:56:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 15:56:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 15:56:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 15:56:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 15:56:37,643 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 15:56:37,643 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 15:56:37,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:56:37 BoogieIcfgContainer
[2020-09-24 15:56:37,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 15:56:37,649 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 15:56:37,649 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 15:56:37,653 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 15:56:37,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:56:36" (1/3) ...
[2020-09-24 15:56:37,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae4f2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:56:37, skipping insertion in model container
[2020-09-24 15:56:37,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:37" (2/3) ...
[2020-09-24 15:56:37,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ae4f2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:56:37, skipping insertion in model container
[2020-09-24 15:56:37,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:56:37" (3/3) ...
[2020-09-24 15:56:37,658 INFO L109 eAbstractionObserver]: Analyzing ICFG signextension-2.c
[2020-09-24 15:56:37,668 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 15:56:37,682 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 15:56:37,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 15:56:37,731 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 15:56:37,732 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 15:56:37,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 15:56:37,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 15:56:37,732 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 15:56:37,733 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 15:56:37,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 15:56:37,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 15:56:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states.
[2020-09-24 15:56:37,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-09-24 15:56:37,764 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 15:56:37,765 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:56:37,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:56:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:56:37,772 INFO L82 PathProgramCache]: Analyzing trace with hash 49487317, now seen corresponding path program 1 times
[2020-09-24 15:56:37,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:56:37,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591283249]
[2020-09-24 15:56:37,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:56:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:56:38,089 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:56:38,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:56:38,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:56:38,090 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:56:38,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19
[2020-09-24 15:56:38,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:56:38,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148
[2020-09-24 15:56:38,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:56:38,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7
[2020-09-24 15:56:38,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11
[2020-09-24 15:56:38,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7
[2020-09-24 15:56:38,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 15:56:38,746 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 15
[2020-09-24 15:56:38,922 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 21
[2020-09-24 15:56:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 15:56:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 15:56:39,287 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0
[2020-09-24 15:56:39,287 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0
[2020-09-24 15:56:39,288 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0
[2020-09-24 15:56:39,288 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set)
[2020-09-24 15:56:39,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-09-24 15:56:39,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 15:56:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1
[2020-09-24 15:56:39,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST
[2020-09-24 15:56:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 15:56:39,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 15:56:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 15:56:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 15:56:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 15:56:39,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591283249]
[2020-09-24 15:56:39,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 15:56:39,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 15:56:39,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616491390]
[2020-09-24 15:56:39,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 15:56:39,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 15:56:39,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 15:56:39,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2020-09-24 15:56:39,330 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 8 states.
[2020-09-24 15:56:39,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 15:56:39,585 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions.
[2020-09-24 15:56:39,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2020-09-24 15:56:39,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12
[2020-09-24 15:56:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 15:56:39,596 INFO L225 Difference]: With dead ends: 23
[2020-09-24 15:56:39,597 INFO L226 Difference]: Without dead ends: 0
[2020-09-24 15:56:39,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110
[2020-09-24 15:56:39,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states.
[2020-09-24 15:56:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0.
[2020-09-24 15:56:39,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states.
[2020-09-24 15:56:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions.
[2020-09-24 15:56:39,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12
[2020-09-24 15:56:39,633 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 15:56:39,634 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions.
[2020-09-24 15:56:39,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 15:56:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions.
[2020-09-24 15:56:39,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run.
[2020-09-24 15:56:39,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 15:56:39,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.
[2020-09-24 15:56:39,660 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true
[2020-09-24 15:56:39,660 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 15:56:39,660 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed.
[2020-09-24 15:56:39,660 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true
[2020-09-24 15:56:39,660 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true
[2020-09-24 15:56:39,661 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed.
[2020-09-24 15:56:39,661 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed.
[2020-09-24 15:56:39,661 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 3 27) the Hoare annotation is: true
[2020-09-24 15:56:39,661 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed.
[2020-09-24 15:56:39,661 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 3 27) no Hoare annotation was computed.
[2020-09-24 15:56:39,662 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed.
[2020-09-24 15:56:39,662 INFO L264 CegarLoopResult]: At program point L21(lines 3 27) the Hoare annotation is: false
[2020-09-24 15:56:39,662 INFO L268 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed.
[2020-09-24 15:56:39,662 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 3 27) no Hoare annotation was computed.
[2020-09-24 15:56:39,662 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed.
[2020-09-24 15:56:39,662 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed.
[2020-09-24 15:56:39,663 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed.
[2020-09-24 15:56:39,663 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed.
[2020-09-24 15:56:39,663 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed.
[2020-09-24 15:56:39,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:56:39 BoogieIcfgContainer
[2020-09-24 15:56:39,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 15:56:39,681 INFO L168 Benchmark]: Toolchain (without parser) took 2758.69 ms. Allocated memory was 147.3 MB in the beginning and 234.9 MB in the end (delta: 87.6 MB). Free memory was 103.9 MB in the beginning and 158.1 MB in the end (delta: -54.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB.
[2020-09-24 15:56:39,682 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 15:56:39,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.16 ms. Allocated memory is still 147.3 MB. Free memory was 103.2 MB in the beginning and 94.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
[2020-09-24 15:56:39,684 INFO L168 Benchmark]: Boogie Preprocessor took 34.89 ms. Allocated memory is still 147.3 MB. Free memory was 94.0 MB in the beginning and 92.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-09-24 15:56:39,685 INFO L168 Benchmark]: RCFGBuilder took 378.67 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 92.6 MB in the beginning and 170.9 MB in the end (delta: -78.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
[2020-09-24 15:56:39,686 INFO L168 Benchmark]: TraceAbstraction took 2029.02 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 170.3 MB in the beginning and 158.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB.
[2020-09-24 15:56:39,691 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.28 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 306.16 ms. Allocated memory is still 147.3 MB. Free memory was 103.2 MB in the beginning and 94.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 34.89 ms. Allocated memory is still 147.3 MB. Free memory was 94.0 MB in the beginning and 92.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 378.67 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 92.6 MB in the beginning and 170.9 MB in the end (delta: -78.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2029.02 ms. Allocated memory was 202.9 MB in the beginning and 234.9 MB in the end (delta: 32.0 MB). Free memory was 170.3 MB in the beginning and 158.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- PositiveResult [Line: 25]: 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: 3]: Loop Invariant
Derived loop invariant: 0
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 33 SDslu, 20 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 2189 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be correct!
Received shutdown request...