/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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/float-no-simp3.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 04:15:19,859 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 04:15:19,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 04:15:19,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 04:15:19,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 04:15:19,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 04:15:19,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 04:15:19,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 04:15:19,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 04:15:19,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 04:15:19,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 04:15:19,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 04:15:19,898 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 04:15:19,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 04:15:19,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 04:15:19,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 04:15:19,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 04:15:19,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 04:15:19,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 04:15:19,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 04:15:19,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 04:15:19,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 04:15:19,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 04:15:19,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 04:15:19,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 04:15:19,914 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 04:15:19,914 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 04:15:19,915 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 04:15:19,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 04:15:19,916 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 04:15:19,916 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 04:15:19,917 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 04:15:19,918 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 04:15:19,919 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 04:15:19,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 04:15:19,920 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 04:15:19,921 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 04:15:19,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 04:15:19,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 04:15:19,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 04:15:19,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 04:15:19,924 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-25 04:15:19,949 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 04:15:19,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 04:15:19,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 04:15:19,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 04:15:19,951 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 04:15:19,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 04:15:19,952 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 04:15:19,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 04:15:19,952 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 04:15:19,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 04:15:19,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 04:15:19,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 04:15:19,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 04:15:19,953 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 04:15:19,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 04:15:19,954 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 04:15:19,954 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 04:15:19,954 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 04:15:19,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 04:15:19,954 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 04:15:19,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 04:15:19,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 04:15:19,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 04:15:19,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 04:15:19,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 04:15:19,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 04:15:19,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 04:15:19,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 04:15:19,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 04:15:19,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true;
[2020-09-25 04:15:20,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 04:15:20,465 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 04:15:20,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 04:15:20,474 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 04:15:20,476 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 04:15:20,477 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3.c
[2020-09-25 04:15:20,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47d9f0dcf/bd928560809f4a078ffdf649e4ecfc89/FLAG3a97958e9
[2020-09-25 04:15:21,098 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 04:15:21,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp3.c
[2020-09-25 04:15:21,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47d9f0dcf/bd928560809f4a078ffdf649e4ecfc89/FLAG3a97958e9
[2020-09-25 04:15:21,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/47d9f0dcf/bd928560809f4a078ffdf649e4ecfc89
[2020-09-25 04:15:21,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 04:15:21,462 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 04:15:21,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 04:15:21,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 04:15:21,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 04:15:21,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:15:21" (1/1) ...
[2020-09-25 04:15:21,473 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a7d2fbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21, skipping insertion in model container
[2020-09-25 04:15:21,473 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:15:21" (1/1) ...
[2020-09-25 04:15:21,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 04:15:21,504 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 04:15:21,713 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 04:15:21,720 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 04:15:21,739 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 04:15:21,755 INFO L208 MainTranslator]: Completed translation
[2020-09-25 04:15:21,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21 WrapperNode
[2020-09-25 04:15:21,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 04:15:21,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 04:15:21,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 04:15:21,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 04:15:21,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21" (1/1) ...
[2020-09-25 04:15:21,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21" (1/1) ...
[2020-09-25 04:15:21,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21" (1/1) ...
[2020-09-25 04:15:21,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21" (1/1) ...
[2020-09-25 04:15:21,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21" (1/1) ...
[2020-09-25 04:15:21,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21" (1/1) ...
[2020-09-25 04:15:21,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21" (1/1) ...
[2020-09-25 04:15:21,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 04:15:21,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 04:15:21,793 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 04:15:21,793 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 04:15:21,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 04:15:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 04:15:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 04:15:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 04:15:21,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 04:15:21,944 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 04:15:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 04:15:21,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 04:15:22,086 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 04:15:22,086 INFO L295 CfgBuilder]: Removed 0 assume(true) statements.
[2020-09-25 04:15:22,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:15:22 BoogieIcfgContainer
[2020-09-25 04:15:22,090 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 04:15:22,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 04:15:22,091 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 04:15:22,095 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 04:15:22,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:15:21" (1/3) ...
[2020-09-25 04:15:22,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4cda5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:15:22, skipping insertion in model container
[2020-09-25 04:15:22,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:15:21" (2/3) ...
[2020-09-25 04:15:22,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4cda5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:15:22, skipping insertion in model container
[2020-09-25 04:15:22,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:15:22" (3/3) ...
[2020-09-25 04:15:22,099 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c
[2020-09-25 04:15:22,112 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 04:15:22,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 04:15:22,142 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 04:15:22,172 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 04:15:22,172 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 04:15:22,172 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 04:15:22,172 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 04:15:22,173 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 04:15:22,173 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 04:15:22,173 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 04:15:22,174 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 04:15:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states.
[2020-09-25 04:15:22,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2020-09-25 04:15:22,202 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 04:15:22,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 04:15:22,204 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 04:15:22,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 04:15:22,211 INFO L82 PathProgramCache]: Analyzing trace with hash -961212715, now seen corresponding path program 1 times
[2020-09-25 04:15:22,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 04:15:22,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281969138]
[2020-09-25 04:15:22,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 04:15:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 04:15:22,309 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 04:15:22,310 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 04:15:22,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 04:15:22,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:15:22 BoogieIcfgContainer
[2020-09-25 04:15:22,332 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 04:15:22,337 INFO L168 Benchmark]: Toolchain (without parser) took 877.77 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 103.5 MB in the beginning and 161.3 MB in the end (delta: -57.8 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB.
[2020-09-25 04:15:22,338 INFO L168 Benchmark]: CDTParser took 0.48 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 04:15:22,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.93 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
[2020-09-25 04:15:22,340 INFO L168 Benchmark]: Boogie Preprocessor took 35.12 ms. Allocated memory is still 140.0 MB. Free memory was 93.8 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
[2020-09-25 04:15:22,341 INFO L168 Benchmark]: RCFGBuilder took 297.66 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.3 MB in the beginning and 172.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
[2020-09-25 04:15:22,342 INFO L168 Benchmark]: TraceAbstraction took 241.41 ms. Allocated memory is still 202.4 MB. Free memory was 171.7 MB in the beginning and 161.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
[2020-09-25 04:15:22,346 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.48 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 293.93 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 35.12 ms. Allocated memory is still 140.0 MB. Free memory was 93.8 MB in the beginning and 92.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 297.66 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.3 MB in the beginning and 172.4 MB in the end (delta: -80.0 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 241.41 ms. Allocated memory is still 202.4 MB. Free memory was 171.7 MB in the beginning and 161.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 8]: 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 someBinaryArithmeticFLOAToperation at line 7.
Possible FailurePath:
[L6] float fs1=2.0f/6.0f;
[L7] float fs2=fs1*6.0f;
[L8] COND TRUE !((int)fs2==2)
[L8] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 3 procedures, 13 locations, 1 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=13occurred 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, 8 NumberOfCodeBlocks, 8 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...