/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-c90d42b
[2020-09-24 19:16:31,965 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 19:16:31,968 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 19:16:31,995 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 19:16:31,995 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 19:16:31,996 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 19:16:31,998 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 19:16:32,000 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 19:16:32,002 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 19:16:32,003 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 19:16:32,004 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 19:16:32,006 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 19:16:32,006 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 19:16:32,007 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 19:16:32,009 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 19:16:32,010 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 19:16:32,011 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 19:16:32,012 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 19:16:32,015 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 19:16:32,017 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 19:16:32,019 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 19:16:32,020 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 19:16:32,022 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 19:16:32,023 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 19:16:32,026 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 19:16:32,026 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 19:16:32,027 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 19:16:32,028 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 19:16:32,029 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 19:16:32,030 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 19:16:32,030 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 19:16:32,031 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 19:16:32,032 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 19:16:32,033 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 19:16:32,035 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 19:16:32,035 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 19:16:32,036 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 19:16:32,036 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 19:16:32,036 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 19:16:32,038 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 19:16:32,039 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 19:16:32,040 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 19:16:32,067 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 19:16:32,067 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 19:16:32,071 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 19:16:32,072 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 19:16:32,072 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 19:16:32,072 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 19:16:32,072 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 19:16:32,072 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 19:16:32,073 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 19:16:32,073 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 19:16:32,073 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 19:16:32,073 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 19:16:32,073 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 19:16:32,073 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 19:16:32,076 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 19:16:32,076 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 19:16:32,076 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 19:16:32,076 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 19:16:32,077 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 19:16:32,077 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 19:16:32,077 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 19:16:32,077 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 19:16:32,077 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 19:16:32,078 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 19:16:32,078 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 19:16:32,078 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 19:16:32,078 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 19:16:32,078 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 19:16:32,079 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 19:16:32,079 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-09-24 19:16:32,533 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 19:16:32,552 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 19:16:32,557 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 19:16:32,559 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 19:16:32,559 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 19:16:32,560 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c
[2020-09-24 19:16:32,659 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02ff113d2/5270123108d34c78880c7713f44fb532/FLAG2a2066da3
[2020-09-24 19:16:33,223 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 19:16:33,223 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float1.c
[2020-09-24 19:16:33,231 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02ff113d2/5270123108d34c78880c7713f44fb532/FLAG2a2066da3
[2020-09-24 19:16:33,563 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02ff113d2/5270123108d34c78880c7713f44fb532
[2020-09-24 19:16:33,578 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 19:16:33,585 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 19:16:33,587 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 19:16:33,587 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 19:16:33,591 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 19:16:33,593 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:16:33" (1/1) ...
[2020-09-24 19:16:33,597 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc51459 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33, skipping insertion in model container
[2020-09-24 19:16:33,597 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:16:33" (1/1) ...
[2020-09-24 19:16:33,607 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 19:16:33,644 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 19:16:33,858 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:16:33,866 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 19:16:33,887 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 19:16:33,906 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 19:16:33,907 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33 WrapperNode
[2020-09-24 19:16:33,907 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 19:16:33,908 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 19:16:33,908 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 19:16:33,908 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 19:16:33,927 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33" (1/1) ...
[2020-09-24 19:16:33,928 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33" (1/1) ...
[2020-09-24 19:16:33,935 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33" (1/1) ...
[2020-09-24 19:16:33,936 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33" (1/1) ...
[2020-09-24 19:16:33,942 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33" (1/1) ...
[2020-09-24 19:16:33,945 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33" (1/1) ...
[2020-09-24 19:16:33,946 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33" (1/1) ...
[2020-09-24 19:16:33,948 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 19:16:33,949 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 19:16:33,949 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 19:16:33,949 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 19:16:33,950 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33" (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 19:16:34,107 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 19:16:34,108 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 19:16:34,108 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 19:16:34,108 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 19:16:34,108 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 19:16:34,108 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 19:16:34,108 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 19:16:34,289 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 19:16:34,289 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-24 19:16:34,294 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:16:34 BoogieIcfgContainer
[2020-09-24 19:16:34,294 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 19:16:34,295 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 19:16:34,296 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 19:16:34,299 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 19:16:34,300 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:16:33" (1/3) ...
[2020-09-24 19:16:34,301 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266a3065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:16:34, skipping insertion in model container
[2020-09-24 19:16:34,301 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:16:33" (2/3) ...
[2020-09-24 19:16:34,302 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266a3065 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:16:34, skipping insertion in model container
[2020-09-24 19:16:34,302 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:16:34" (3/3) ...
[2020-09-24 19:16:34,304 INFO  L109   eAbstractionObserver]: Analyzing ICFG float1.c
[2020-09-24 19:16:34,316 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 19:16:34,326 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations.
[2020-09-24 19:16:34,346 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 2 error locations.
[2020-09-24 19:16:34,376 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 19:16:34,377 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 19:16:34,377 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 19:16:34,377 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 19:16:34,377 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 19:16:34,377 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 19:16:34,378 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 19:16:34,378 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 19:16:34,404 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states.
[2020-09-24 19:16:34,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-09-24 19:16:34,412 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 19:16:34,413 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 19:16:34,414 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 19:16:34,421 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 19:16:34,422 INFO  L82        PathProgramCache]: Analyzing trace with hash -1235461758, now seen corresponding path program 1 times
[2020-09-24 19:16:34,431 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 19:16:34,432 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636786421]
[2020-09-24 19:16:34,432 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 19:16:34,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 19:16:34,524 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 19:16:34,525 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 19:16:34,530 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 19:16:34,548 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:16:34 BoogieIcfgContainer
[2020-09-24 19:16:34,548 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 19:16:34,552 INFO  L168              Benchmark]: Toolchain (without parser) took 970.57 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 158.8 MB in the end (delta: -57.1 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB.
[2020-09-24 19:16:34,553 INFO  L168              Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
[2020-09-24 19:16:34,554 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 320.49 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 91.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
[2020-09-24 19:16:34,556 INFO  L168              Benchmark]: Boogie Preprocessor took 40.54 ms. Allocated memory is still 138.4 MB. Free memory was 91.9 MB in the beginning and 90.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB.
[2020-09-24 19:16:34,557 INFO  L168              Benchmark]: RCFGBuilder took 345.44 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.4 MB in the beginning and 169.9 MB in the end (delta: -79.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
[2020-09-24 19:16:34,557 INFO  L168              Benchmark]: TraceAbstraction took 253.40 ms. Allocated memory is still 201.3 MB. Free memory was 169.2 MB in the beginning and 158.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
[2020-09-24 19:16:34,562 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.31 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 320.49 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 91.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 40.54 ms. Allocated memory is still 138.4 MB. Free memory was 91.9 MB in the beginning and 90.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.5 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 345.44 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 90.4 MB in the beginning and 169.9 MB in the end (delta: -79.5 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 253.40 ms. Allocated memory is still 201.3 MB. Free memory was 169.2 MB in the beginning and 158.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable
    Unable to prove that call of __VERIFIER_error() unreachable
 Reason: overapproximation of to_int at line 8, overapproximation of to_real at line 6, overapproximation of someBinaryArithmeticDOUBLEoperation at line 7. 
Possible FailurePath: 
[L3]              double x;
[L4]              int y;
[L6]              x=2
[L7]              x-=0.6
[L8]              y=x
[L10]  COND TRUE  !(y==1)
[L10]             __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 22 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=22occurred 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, 11 NumberOfCodeBlocks, 11 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 could not prove your program: unable to determine feasibility of some traces
Received shutdown request...