/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-1.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 15:56:34,101 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 15:56:34,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 15:56:34,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 15:56:34,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 15:56:34,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 15:56:34,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 15:56:34,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 15:56:34,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 15:56:34,179 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 15:56:34,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 15:56:34,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 15:56:34,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 15:56:34,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 15:56:34,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 15:56:34,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 15:56:34,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 15:56:34,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 15:56:34,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 15:56:34,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 15:56:34,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 15:56:34,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 15:56:34,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 15:56:34,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 15:56:34,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 15:56:34,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 15:56:34,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 15:56:34,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 15:56:34,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 15:56:34,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 15:56:34,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 15:56:34,223 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 15:56:34,225 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 15:56:34,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 15:56:34,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 15:56:34,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 15:56:34,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 15:56:34,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 15:56:34,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 15:56:34,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 15:56:34,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 15:56:34,232 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 15:56:34,281 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 15:56:34,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 15:56:34,284 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 15:56:34,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 15:56:34,285 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 15:56:34,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 15:56:34,286 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 15:56:34,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 15:56:34,286 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 15:56:34,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 15:56:34,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 15:56:34,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 15:56:34,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 15:56:34,288 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 15:56:34,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 15:56:34,289 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 15:56:34,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 15:56:34,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 15:56:34,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 15:56:34,290 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 15:56:34,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 15:56:34,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 15:56:34,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 15:56:34,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 15:56:34,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 15:56:34,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 15:56:34,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 15:56:34,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 15:56:34,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 15:56:34,292 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 15:56:34,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 15:56:34,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 15:56:34,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 15:56:34,780 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 15:56:34,781 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 15:56:34,782 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-regression/signextension-1.c
[2020-09-24 15:56:34,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec24462db/d133aa9d0686469b9440f38c8050a2be/FLAGb8af5382e
[2020-09-24 15:56:35,424 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 15:56:35,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-regression/signextension-1.c
[2020-09-24 15:56:35,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec24462db/d133aa9d0686469b9440f38c8050a2be/FLAGb8af5382e
[2020-09-24 15:56:35,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ec24462db/d133aa9d0686469b9440f38c8050a2be
[2020-09-24 15:56:35,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 15:56:35,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 15:56:35,804 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 15:56:35,804 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 15:56:35,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 15:56:35,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:56:35" (1/1) ...
[2020-09-24 15:56:35,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243023c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:35, skipping insertion in model container
[2020-09-24 15:56:35,816 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:56:35" (1/1) ...
[2020-09-24 15:56:35,825 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 15:56:35,853 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 15:56:36,128 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:56:36,140 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 15:56:36,168 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 15:56:36,188 INFO L208 MainTranslator]: Completed translation
[2020-09-24 15:56:36,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36 WrapperNode
[2020-09-24 15:56:36,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 15:56:36,192 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 15:56:36,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 15:56:36,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 15:56:36,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36" (1/1) ...
[2020-09-24 15:56:36,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36" (1/1) ...
[2020-09-24 15:56:36,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36" (1/1) ...
[2020-09-24 15:56:36,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36" (1/1) ...
[2020-09-24 15:56:36,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36" (1/1) ...
[2020-09-24 15:56:36,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36" (1/1) ...
[2020-09-24 15:56:36,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36" (1/1) ...
[2020-09-24 15:56:36,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 15:56:36,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 15:56:36,369 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 15:56:36,369 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 15:56:36,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36" (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 15:56:36,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 15:56:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 15:56:36,463 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 15:56:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 15:56:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 15:56:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 15:56:36,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 15:56:36,670 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 15:56:36,670 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 15:56:36,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:56:36 BoogieIcfgContainer
[2020-09-24 15:56:36,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 15:56:36,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 15:56:36,677 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 15:56:36,681 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 15:56:36,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:56:35" (1/3) ...
[2020-09-24 15:56:36,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f4ab1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:56:36, skipping insertion in model container
[2020-09-24 15:56:36,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:56:36" (2/3) ...
[2020-09-24 15:56:36,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12f4ab1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:56:36, skipping insertion in model container
[2020-09-24 15:56:36,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:56:36" (3/3) ...
[2020-09-24 15:56:36,686 INFO L109 eAbstractionObserver]: Analyzing ICFG signextension-1.c
[2020-09-24 15:56:36,698 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 15:56:36,708 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 15:56:36,730 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 15:56:36,757 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 15:56:36,757 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 15:56:36,758 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 15:56:36,758 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 15:56:36,758 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 15:56:36,758 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 15:56:36,758 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 15:56:36,758 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 15:56:36,782 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states.
[2020-09-24 15:56:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2020-09-24 15:56:36,790 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 15:56:36,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 15:56:36,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 15:56:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 15:56:36,798 INFO L82 PathProgramCache]: Analyzing trace with hash 49487317, now seen corresponding path program 1 times
[2020-09-24 15:56:36,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 15:56:36,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854686440]
[2020-09-24 15:56:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 15:56:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 15:56:36,953 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 15:56:36,954 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 15:56:36,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 15:56:36,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:56:36 BoogieIcfgContainer
[2020-09-24 15:56:36,980 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 15:56:36,985 INFO L168 Benchmark]: Toolchain (without parser) took 1186.68 ms. Allocated memory was 148.4 MB in the beginning and 207.6 MB in the end (delta: 59.2 MB). Free memory was 103.6 MB in the beginning and 163.1 MB in the end (delta: -59.5 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 15:56:36,986 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 15:56:36,987 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.63 ms. Allocated memory is still 148.4 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
[2020-09-24 15:56:36,989 INFO L168 Benchmark]: Boogie Preprocessor took 175.02 ms. Allocated memory was 148.4 MB in the beginning and 207.6 MB in the end (delta: 59.2 MB). Free memory was 93.6 MB in the beginning and 186.3 MB in the end (delta: -92.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
[2020-09-24 15:56:36,990 INFO L168 Benchmark]: RCFGBuilder took 307.11 ms. Allocated memory is still 207.6 MB. Free memory was 185.9 MB in the beginning and 175.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB.
[2020-09-24 15:56:36,991 INFO L168 Benchmark]: TraceAbstraction took 303.55 ms. Allocated memory is still 207.6 MB. Free memory was 174.5 MB in the beginning and 163.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB.
[2020-09-24 15:56:36,995 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.29 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 387.63 ms. Allocated memory is still 148.4 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 175.02 ms. Allocated memory was 148.4 MB in the beginning and 207.6 MB in the end (delta: 59.2 MB). Free memory was 93.6 MB in the beginning and 186.3 MB in the end (delta: -92.7 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 307.11 ms. Allocated memory is still 207.6 MB. Free memory was 185.9 MB in the beginning and 175.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 303.55 ms. Allocated memory is still 207.6 MB. Free memory was 174.5 MB in the beginning and 163.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- CounterExampleResult [Line: 25]: a call of __VERIFIER_error() is reachable
a call of __VERIFIER_error() is reachable
We found a FailurePath:
[L5] unsigned short int allbits = -1;
[L6] short int signedallbits = allbits;
[L7] int unsignedtosigned = allbits;
[L8] unsigned int unsignedtounsigned = allbits;
[L9] int signedtosigned = signedallbits;
[L10] unsigned int signedtounsigned = signedallbits;
[L19-L20] COND TRUE unsignedtosigned == 65535 && unsignedtounsigned == 65535
&& signedtosigned == -1 && signedtounsigned == 4294967295
[L25] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...