/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-25 14:28:08,229 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-25 14:28:08,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-25 14:28:08,281 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-25 14:28:08,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-25 14:28:08,293 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-25 14:28:08,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-25 14:28:08,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-25 14:28:08,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-25 14:28:08,307 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-25 14:28:08,308 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-25 14:28:08,309 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-25 14:28:08,309 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-25 14:28:08,312 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-25 14:28:08,316 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-25 14:28:08,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-25 14:28:08,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-25 14:28:08,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-25 14:28:08,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-25 14:28:08,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-25 14:28:08,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-25 14:28:08,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-25 14:28:08,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-25 14:28:08,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-25 14:28:08,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-25 14:28:08,343 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-25 14:28:08,344 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-25 14:28:08,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-25 14:28:08,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-25 14:28:08,350 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-25 14:28:08,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-25 14:28:08,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-25 14:28:08,352 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-25 14:28:08,353 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-25 14:28:08,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-25 14:28:08,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-25 14:28:08,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-25 14:28:08,356 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-25 14:28:08,356 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-25 14:28:08,357 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-25 14:28:08,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-25 14:28:08,359 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 14:28:08,408 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-25 14:28:08,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-25 14:28:08,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-25 14:28:08,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-25 14:28:08,412 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-25 14:28:08,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-25 14:28:08,412 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-25 14:28:08,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-25 14:28:08,413 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-25 14:28:08,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-25 14:28:08,414 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-25 14:28:08,414 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-25 14:28:08,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-25 14:28:08,415 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-25 14:28:08,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-25 14:28:08,416 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-25 14:28:08,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-25 14:28:08,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-25 14:28:08,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-25 14:28:08,416 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-25 14:28:08,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-25 14:28:08,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-25 14:28:08,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-25 14:28:08,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-25 14:28:08,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-25 14:28:08,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-25 14:28:08,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-25 14:28:08,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-25 14:28:08,418 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-25 14:28:08,419 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true;
[2020-09-25 14:28:08,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-25 14:28:08,992 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-25 14:28:08,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-25 14:28:09,000 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-25 14:28:09,001 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-25 14:28:09,002 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c
[2020-09-25 14:28:09,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e387672e5/079b565ca71642fca3066b4267691fd3/FLAG6b2f060c3
[2020-09-25 14:28:09,643 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-25 14:28:09,643 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1232a.c
[2020-09-25 14:28:09,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e387672e5/079b565ca71642fca3066b4267691fd3/FLAG6b2f060c3
[2020-09-25 14:28:09,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e387672e5/079b565ca71642fca3066b4267691fd3
[2020-09-25 14:28:09,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-25 14:28:09,985 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-25 14:28:09,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-25 14:28:09,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-25 14:28:09,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-25 14:28:09,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:09" (1/1) ...
[2020-09-25 14:28:09,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601fc90f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:09, skipping insertion in model container
[2020-09-25 14:28:09,996 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:09" (1/1) ...
[2020-09-25 14:28:10,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-25 14:28:10,031 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-25 14:28:10,289 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 14:28:10,294 INFO L203 MainTranslator]: Completed pre-run
[2020-09-25 14:28:10,449 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-25 14:28:10,487 INFO L208 MainTranslator]: Completed translation
[2020-09-25 14:28:10,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10 WrapperNode
[2020-09-25 14:28:10,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-25 14:28:10,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-25 14:28:10,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-25 14:28:10,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-25 14:28:10,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ...
[2020-09-25 14:28:10,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ...
[2020-09-25 14:28:10,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ...
[2020-09-25 14:28:10,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ...
[2020-09-25 14:28:10,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ...
[2020-09-25 14:28:10,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ...
[2020-09-25 14:28:10,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (1/1) ...
[2020-09-25 14:28:10,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-25 14:28:10,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-25 14:28:10,562 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-25 14:28:10,562 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-25 14:28:10,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (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 14:28:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-25 14:28:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-25 14:28:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double
[2020-09-25 14:28:10,649 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double
[2020-09-25 14:28:10,650 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double
[2020-09-25 14:28:10,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double
[2020-09-25 14:28:10,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-25 14:28:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-25 14:28:10,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double
[2020-09-25 14:28:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double
[2020-09-25 14:28:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double
[2020-09-25 14:28:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-25 14:28:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-25 14:28:10,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-25 14:28:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-25 14:28:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double
[2020-09-25 14:28:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double
[2020-09-25 14:28:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-25 14:28:10,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-25 14:28:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-25 14:28:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-25 14:28:10,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-25 14:28:11,094 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-25 14:28:11,094 INFO L295 CfgBuilder]: Removed 4 assume(true) statements.
[2020-09-25 14:28:11,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:11 BoogieIcfgContainer
[2020-09-25 14:28:11,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-25 14:28:11,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-25 14:28:11,103 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-25 14:28:11,106 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-25 14:28:11,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:28:09" (1/3) ...
[2020-09-25 14:28:11,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600ce93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:11, skipping insertion in model container
[2020-09-25 14:28:11,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:10" (2/3) ...
[2020-09-25 14:28:11,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600ce93d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:11, skipping insertion in model container
[2020-09-25 14:28:11,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:11" (3/3) ...
[2020-09-25 14:28:11,111 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232a.c
[2020-09-25 14:28:11,124 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-25 14:28:11,140 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-25 14:28:11,178 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-25 14:28:11,209 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-25 14:28:11,209 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-25 14:28:11,209 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-25 14:28:11,209 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-25 14:28:11,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-25 14:28:11,210 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-25 14:28:11,210 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-25 14:28:11,210 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-25 14:28:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states.
[2020-09-25 14:28:11,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2020-09-25 14:28:11,248 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 14:28:11,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 14:28:11,249 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 14:28:11,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 14:28:11,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1987914920, now seen corresponding path program 1 times
[2020-09-25 14:28:11,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 14:28:11,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914059877]
[2020-09-25 14:28:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 14:28:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 14:28:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:11,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:11,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 14:28:11,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46
[2020-09-25 14:28:11,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 14:28:11,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396
[2020-09-25 14:28:11,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 14:28:11,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5
[2020-09-25 14:28:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 14:28:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29
[2020-09-25 14:28:11,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 14:28:11,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8
[2020-09-25 14:28:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 14:28:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 14:28:11,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:11,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 14:28:11,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 14:28:11,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 14:28:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-09-25 14:28:11,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 14:28:11,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5
[2020-09-25 14:28:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 14:28:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 14:28:11,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 14:28:11,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 14:28:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 14:28:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 14:28:11,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:12,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 14:28:12,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25
[2020-09-25 14:28:12,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 14:28:12,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-09-25 14:28:12,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 14:28:12,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5
[2020-09-25 14:28:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 14:28:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-25 14:28:12,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 14:28:12,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 14:28:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 14:28:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 14:28:12,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:12,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:12,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 14:28:12,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14
[2020-09-25 14:28:12,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-25 14:28:12,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32
[2020-09-25 14:28:12,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 14:28:12,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5
[2020-09-25 14:28:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 14:28:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 14:28:12,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9
[2020-09-25 14:28:12,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 14:28:12,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 14:28:12,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914059877]
[2020-09-25 14:28:12,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 14:28:12,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 14:28:12,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154825755]
[2020-09-25 14:28:12,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 14:28:12,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 14:28:12,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 14:28:12,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 14:28:12,153 INFO L87 Difference]: Start difference. First operand 95 states. Second operand 6 states.
[2020-09-25 14:28:12,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 14:28:12,523 INFO L93 Difference]: Finished difference Result 181 states and 211 transitions.
[2020-09-25 14:28:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 14:28:12,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35
[2020-09-25 14:28:12,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 14:28:12,542 INFO L225 Difference]: With dead ends: 181
[2020-09-25 14:28:12,542 INFO L226 Difference]: Without dead ends: 92
[2020-09-25 14:28:12,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-25 14:28:12,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2020-09-25 14:28:12,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91.
[2020-09-25 14:28:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states.
[2020-09-25 14:28:12,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions.
[2020-09-25 14:28:12,622 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 35
[2020-09-25 14:28:12,622 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 14:28:12,625 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions.
[2020-09-25 14:28:12,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 14:28:12,625 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions.
[2020-09-25 14:28:12,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-09-25 14:28:12,631 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 14:28:12,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 14:28:12,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-25 14:28:12,631 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 14:28:12,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 14:28:12,632 INFO L82 PathProgramCache]: Analyzing trace with hash 1091693362, now seen corresponding path program 1 times
[2020-09-25 14:28:12,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 14:28:12,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727910886]
[2020-09-25 14:28:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 14:28:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 14:28:12,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:12,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 14:28:12,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63
[2020-09-25 14:28:12,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 14:28:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283
[2020-09-25 14:28:12,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 14:28:12,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5
[2020-09-25 14:28:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 14:28:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46
[2020-09-25 14:28:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 14:28:12,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-25 14:28:13,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-25 14:28:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 14:28:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:13,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 14:28:13,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11
[2020-09-25 14:28:13,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 14:28:13,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15
[2020-09-25 14:28:13,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 14:28:13,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5
[2020-09-25 14:28:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-25 14:28:13,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 14:28:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-25 14:28:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 14:28:13,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9
[2020-09-25 14:28:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 14:28:13,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:13,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 14:28:13,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42
[2020-09-25 14:28:13,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 14:28:13,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130
[2020-09-25 14:28:13,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 14:28:13,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5
[2020-09-25 14:28:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 14:28:13,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30
[2020-09-25 14:28:13,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5
[2020-09-25 14:28:13,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 14:28:13,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2
[2020-09-25 14:28:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-25 14:28:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-25 14:28:13,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-25 14:28:13,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31
[2020-09-25 14:28:13,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-25 14:28:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109
[2020-09-25 14:28:13,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-09-25 14:28:13,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5
[2020-09-25 14:28:13,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3
[2020-09-25 14:28:13,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-25 14:28:13,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26
[2020-09-25 14:28:13,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-25 14:28:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-25 14:28:13,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727910886]
[2020-09-25 14:28:13,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-25 14:28:13,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-25 14:28:13,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917504791]
[2020-09-25 14:28:13,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-25 14:28:13,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-25 14:28:13,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-25 14:28:13,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-09-25 14:28:13,410 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 6 states.
[2020-09-25 14:28:13,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-25 14:28:13,734 INFO L93 Difference]: Finished difference Result 127 states and 138 transitions.
[2020-09-25 14:28:13,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2020-09-25 14:28:13,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52
[2020-09-25 14:28:13,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-25 14:28:13,741 INFO L225 Difference]: With dead ends: 127
[2020-09-25 14:28:13,741 INFO L226 Difference]: Without dead ends: 96
[2020-09-25 14:28:13,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-09-25 14:28:13,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2020-09-25 14:28:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91.
[2020-09-25 14:28:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states.
[2020-09-25 14:28:13,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions.
[2020-09-25 14:28:13,773 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 52
[2020-09-25 14:28:13,774 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-25 14:28:13,774 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions.
[2020-09-25 14:28:13,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-25 14:28:13,774 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions.
[2020-09-25 14:28:13,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2020-09-25 14:28:13,779 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-25 14:28:13,779 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-25 14:28:13,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-25 14:28:13,780 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-25 14:28:13,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-25 14:28:13,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1804168050, now seen corresponding path program 1 times
[2020-09-25 14:28:13,781 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-25 14:28:13,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410568819]
[2020-09-25 14:28:13,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-25 14:28:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-25 14:28:13,821 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-25 14:28:13,821 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-25 14:28:13,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-25 14:28:13,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:28:13 BoogieIcfgContainer
[2020-09-25 14:28:13,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-25 14:28:13,860 INFO L168 Benchmark]: Toolchain (without parser) took 3876.09 ms. Allocated memory was 140.5 MB in the beginning and 232.8 MB in the end (delta: 92.3 MB). Free memory was 102.6 MB in the beginning and 88.8 MB in the end (delta: 13.7 MB). Peak memory consumption was 106.0 MB. Max. memory is 7.1 GB.
[2020-09-25 14:28:13,862 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-25 14:28:13,863 INFO L168 Benchmark]: CACSL2BoogieTranslator took 503.72 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.9 MB in the beginning and 182.5 MB in the end (delta: -80.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB.
[2020-09-25 14:28:13,864 INFO L168 Benchmark]: Boogie Preprocessor took 71.39 ms. Allocated memory is still 205.5 MB. Free memory was 182.5 MB in the beginning and 180.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB.
[2020-09-25 14:28:13,865 INFO L168 Benchmark]: RCFGBuilder took 539.48 ms. Allocated memory is still 205.5 MB. Free memory was 180.6 MB in the beginning and 155.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB.
[2020-09-25 14:28:13,867 INFO L168 Benchmark]: TraceAbstraction took 2752.93 ms. Allocated memory was 205.5 MB in the beginning and 232.8 MB in the end (delta: 27.3 MB). Free memory was 155.1 MB in the beginning and 88.8 MB in the end (delta: 66.3 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB.
[2020-09-25 14:28:13,877 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 503.72 ms. Allocated memory was 140.5 MB in the beginning and 205.5 MB in the end (delta: 65.0 MB). Free memory was 101.9 MB in the beginning and 182.5 MB in the end (delta: -80.6 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 71.39 ms. Allocated memory is still 205.5 MB. Free memory was 182.5 MB in the beginning and 180.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 539.48 ms. Allocated memory is still 205.5 MB. Free memory was 180.6 MB in the beginning and 155.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 2752.93 ms. Allocated memory was 205.5 MB in the beginning and 232.8 MB in the end (delta: 27.3 MB). Free memory was 155.1 MB in the beginning and 88.8 MB in the end (delta: 66.3 MB). Peak memory consumption was 93.6 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someUnaryDOUBLEoperation at line 75.
Possible FailurePath:
[L74] double x = 0.0;
[L75] double y = -0.0;
[L76] CALL, EXPR fmin_double(x, y)
[L46] CALL, EXPR __fpclassify_double(x)
[L19] __uint32_t msw, lsw;
[L22] ieee_double_shape_type ew_u;
[L23] ew_u.value = (x)
[L24] EXPR ew_u.parts.msw
[L24] (msw) = ew_u.parts.msw
[L25] EXPR ew_u.parts.lsw
[L25] (lsw) = ew_u.parts.lsw
[L28-L29] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) ||
(msw == 0x80000000 && lsw == 0x00000000))
[L31-L32] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) ||
(msw >= 0x80100000 && msw <= 0xffefffff))
[L34-L35] COND FALSE !(( msw <= 0x000fffff) ||
(msw >= 0x80000000 && msw <= 0x800fffff))
[L38-L39] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) ||
(msw == 0xfff00000 && lsw == 0x00000000))
[L42] return 0;
[L46] RET, EXPR __fpclassify_double(x)
[L46] COND TRUE __fpclassify_double(x) == 0
[L47] return y;
[L76] RET, EXPR fmin_double(x, y)
[L76] double res = fmin_double(x, y);
[L79] EXPR res == -0.0 && __signbit_double(res) == 1
[L79] COND TRUE !(res == -0.0 && __signbit_double(res) == 1)
[L80] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 7 procedures, 99 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 193 SDtfs, 40 SDslu, 470 SDs, 0 SdLazy, 282 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred 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, 2 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 7242 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...