/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0662a.c
--------------------------------------------------------------------------------
This is Ultimate 0.2.0-0f64333
[2020-10-29 09:06:23,133 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-10-29 09:06:23,136 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-29 09:06:23,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-29 09:06:23,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-29 09:06:23,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-29 09:06:23,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-29 09:06:23,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-29 09:06:23,182 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-29 09:06:23,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-29 09:06:23,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-10-29 09:06:23,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-29 09:06:23,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-29 09:06:23,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-29 09:06:23,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-29 09:06:23,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-29 09:06:23,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-29 09:06:23,194 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-29 09:06:23,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-29 09:06:23,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-29 09:06:23,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-29 09:06:23,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-29 09:06:23,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-10-29 09:06:23,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-29 09:06:23,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-29 09:06:23,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-29 09:06:23,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-29 09:06:23,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-29 09:06:23,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-29 09:06:23,222 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-29 09:06:23,222 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-29 09:06:23,224 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-29 09:06:23,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-29 09:06:23,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-29 09:06:23,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-29 09:06:23,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-29 09:06:23,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-29 09:06:23,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-29 09:06:23,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-29 09:06:23,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-29 09:06:23,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-10-29 09:06:23,233 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
[2020-10-29 09:06:23,283 INFO L113 SettingsManager]: Loading preferences was successful
[2020-10-29 09:06:23,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-29 09:06:23,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-29 09:06:23,287 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-10-29 09:06:23,287 INFO L138 SettingsManager]: * Use SBE=true
[2020-10-29 09:06:23,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-29 09:06:23,288 INFO L138 SettingsManager]: * sizeof long=4
[2020-10-29 09:06:23,290 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-10-29 09:06:23,290 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-10-29 09:06:23,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-10-29 09:06:23,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-10-29 09:06:23,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-29 09:06:23,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-10-29 09:06:23,292 INFO L138 SettingsManager]: * sizeof long double=12
[2020-10-29 09:06:23,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-10-29 09:06:23,293 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-10-29 09:06:23,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-10-29 09:06:23,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-29 09:06:23,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-10-29 09:06:23,294 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-10-29 09:06:23,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-10-29 09:06:23,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-29 09:06:23,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-29 09:06:23,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-10-29 09:06:23,296 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-29 09:06:23,296 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-10-29 09:06:23,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-29 09:06:23,297 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-29 09:06:23,297 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-10-29 09:06:23,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true;
[2020-10-29 09:06:23,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-29 09:06:23,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-29 09:06:23,851 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-29 09:06:23,852 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-10-29 09:06:23,853 INFO L275 PluginConnector]: CDTParser initialized
[2020-10-29 09:06:23,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0662a.c
[2020-10-29 09:06:23,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ab3f7eca/91a1a96394b64e8ebc630ad8733513db/FLAG8fe310d9b
[2020-10-29 09:06:24,584 INFO L306 CDTParser]: Found 1 translation units.
[2020-10-29 09:06:24,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0662a.c
[2020-10-29 09:06:24,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ab3f7eca/91a1a96394b64e8ebc630ad8733513db/FLAG8fe310d9b
[2020-10-29 09:06:24,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6ab3f7eca/91a1a96394b64e8ebc630ad8733513db
[2020-10-29 09:06:24,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-29 09:06:24,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-29 09:06:24,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-29 09:06:24,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-29 09:06:24,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-29 09:06:24,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:24" (1/1) ...
[2020-10-29 09:06:24,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20fcb581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:24, skipping insertion in model container
[2020-10-29 09:06:24,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:06:24" (1/1) ...
[2020-10-29 09:06:24,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-10-29 09:06:25,024 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-10-29 09:06:25,233 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-29 09:06:25,248 INFO L203 MainTranslator]: Completed pre-run
[2020-10-29 09:06:25,383 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-10-29 09:06:25,420 INFO L208 MainTranslator]: Completed translation
[2020-10-29 09:06:25,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25 WrapperNode
[2020-10-29 09:06:25,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-29 09:06:25,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-29 09:06:25,424 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-29 09:06:25,424 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-10-29 09:06:25,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25" (1/1) ...
[2020-10-29 09:06:25,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25" (1/1) ...
[2020-10-29 09:06:25,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25" (1/1) ...
[2020-10-29 09:06:25,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25" (1/1) ...
[2020-10-29 09:06:25,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25" (1/1) ...
[2020-10-29 09:06:25,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25" (1/1) ...
[2020-10-29 09:06:25,563 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25" (1/1) ...
[2020-10-29 09:06:25,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-29 09:06:25,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-29 09:06:25,573 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-10-29 09:06:25,574 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-10-29 09:06:25,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25" (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
[2020-10-29 09:06:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-29 09:06:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-29 09:06:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error
[2020-10-29 09:06:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double
[2020-10-29 09:06:25,663 INFO L138 BoogieDeclarations]: Found implementation of procedure atan_double
[2020-10-29 09:06:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_atan2
[2020-10-29 09:06:25,664 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-10-29 09:06:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure abort
[2020-10-29 09:06:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail
[2020-10-29 09:06:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error
[2020-10-29 09:06:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-10-29 09:06:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double
[2020-10-29 09:06:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double
[2020-10-29 09:06:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-10-29 09:06:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-10-29 09:06:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-10-29 09:06:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-10-29 09:06:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-10-29 09:06:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure atan_double
[2020-10-29 09:06:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_atan2
[2020-10-29 09:06:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-10-29 09:06:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-29 09:06:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2020-10-29 09:06:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real
[2020-10-29 09:06:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-29 09:06:26,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-29 09:06:26,566 INFO L298 CfgBuilder]: Removed 16 assume(true) statements.
[2020-10-29 09:06:26,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:26 BoogieIcfgContainer
[2020-10-29 09:06:26,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-29 09:06:26,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-29 09:06:26,575 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-10-29 09:06:26,579 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-10-29 09:06:26,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:06:24" (1/3) ...
[2020-10-29 09:06:26,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39039f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:26, skipping insertion in model container
[2020-10-29 09:06:26,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:06:25" (2/3) ...
[2020-10-29 09:06:26,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39039f96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:06:26, skipping insertion in model container
[2020-10-29 09:06:26,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:06:26" (3/3) ...
[2020-10-29 09:06:26,584 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0662a.c
[2020-10-29 09:06:26,599 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-29 09:06:26,605 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-29 09:06:26,619 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-29 09:06:26,658 INFO L377 AbstractCegarLoop]: Interprodecural is true
[2020-10-29 09:06:26,658 INFO L378 AbstractCegarLoop]: Hoare is true
[2020-10-29 09:06:26,658 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-29 09:06:26,658 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-29 09:06:26,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-29 09:06:26,659 INFO L382 AbstractCegarLoop]: Difference is false
[2020-10-29 09:06:26,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-29 09:06:26,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-29 09:06:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states.
[2020-10-29 09:06:26,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-10-29 09:06:26,689 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-29 09:06:26,690 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]
[2020-10-29 09:06:26,691 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 09:06:26,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 09:06:26,697 INFO L82 PathProgramCache]: Analyzing trace with hash 199039736, now seen corresponding path program 1 times
[2020-10-29 09:06:26,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 09:06:26,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269776120]
[2020-10-29 09:06:26,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 09:06:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 09:06:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 09:06:27,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 09:06:27,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 09:06:27,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30
[2020-10-29 09:06:27,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 09:06:27,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 359
[2020-10-29 09:06:27,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 09:06:27,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 09:06:27,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 09:06:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19
[2020-10-29 09:06:27,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 09:06:27,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-29 09:06:27,387 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 73
[2020-10-29 09:06:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-29 09:06:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 09:06:27,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 09:06:27,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 09:06:27,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-29 09:06:27,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-29 09:06:27,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25
[2020-10-29 09:06:27,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 09:06:27,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 09:06:27,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 09:06:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-29 09:06:27,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 09:06:27,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 09:06:27,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-10-29 09:06:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-29 09:06:27,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 09:06:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-10-29 09:06:27,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-10-29 09:06:27,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-10-29 09:06:27,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-29 09:06:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29
[2020-10-29 09:06:27,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE
[2020-10-29 09:06:27,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3
[2020-10-29 09:06:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-29 09:06:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-29 09:06:27,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-29 09:06:27,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-29 09:06:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-29 09:06:27,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269776120]
[2020-10-29 09:06:27,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-29 09:06:27,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-29 09:06:27,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388007238]
[2020-10-29 09:06:27,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-10-29 09:06:27,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-29 09:06:27,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-10-29 09:06:27,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-10-29 09:06:27,566 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 4 states.
[2020-10-29 09:06:28,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-29 09:06:28,068 INFO L93 Difference]: Finished difference Result 205 states and 323 transitions.
[2020-10-29 09:06:28,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2020-10-29 09:06:28,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20
[2020-10-29 09:06:28,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-29 09:06:28,087 INFO L225 Difference]: With dead ends: 205
[2020-10-29 09:06:28,087 INFO L226 Difference]: Without dead ends: 99
[2020-10-29 09:06:28,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-10-29 09:06:28,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2020-10-29 09:06:28,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99.
[2020-10-29 09:06:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states.
[2020-10-29 09:06:28,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions.
[2020-10-29 09:06:28,166 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 20
[2020-10-29 09:06:28,167 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-10-29 09:06:28,167 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions.
[2020-10-29 09:06:28,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-10-29 09:06:28,167 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions.
[2020-10-29 09:06:28,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2020-10-29 09:06:28,168 INFO L414 BasicCegarLoop]: Found error trace
[2020-10-29 09:06:28,169 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]
[2020-10-29 09:06:28,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-29 09:06:28,169 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-29 09:06:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-10-29 09:06:28,170 INFO L82 PathProgramCache]: Analyzing trace with hash -1527493777, now seen corresponding path program 1 times
[2020-10-29 09:06:28,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-29 09:06:28,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100086237]
[2020-10-29 09:06:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-29 09:06:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-10-29 09:06:28,230 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-10-29 09:06:28,231 INFO L523 BasicCegarLoop]: Counterexample might be feasible
[2020-10-29 09:06:28,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-29 09:06:28,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:06:28 BoogieIcfgContainer
[2020-10-29 09:06:28,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-10-29 09:06:28,256 INFO L168 Benchmark]: Toolchain (without parser) took 3306.25 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 125.6 MB in the beginning and 89.5 MB in the end (delta: 36.2 MB). Peak memory consumption was 73.1 MB. Max. memory is 8.0 GB.
[2020-10-29 09:06:28,257 INFO L168 Benchmark]: CDTParser took 1.60 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
[2020-10-29 09:06:28,258 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.66 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 110.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
[2020-10-29 09:06:28,259 INFO L168 Benchmark]: Boogie Preprocessor took 148.40 ms. Allocated memory is still 151.0 MB. Free memory was 110.4 MB in the beginning and 107.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
[2020-10-29 09:06:28,260 INFO L168 Benchmark]: RCFGBuilder took 996.30 ms. Allocated memory is still 151.0 MB. Free memory was 107.4 MB in the beginning and 101.0 MB in the end (delta: 6.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB.
[2020-10-29 09:06:28,261 INFO L168 Benchmark]: TraceAbstraction took 1679.50 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 100.5 MB in the beginning and 89.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB.
[2020-10-29 09:06:28,264 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 1.60 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB.
* CACSL2BoogieTranslator took 466.66 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 110.5 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB.
* Boogie Preprocessor took 148.40 ms. Allocated memory is still 151.0 MB. Free memory was 110.4 MB in the beginning and 107.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB.
* RCFGBuilder took 996.30 ms. Allocated memory is still 151.0 MB. Free memory was 107.4 MB in the beginning and 101.0 MB in the end (delta: 6.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB.
* TraceAbstraction took 1679.50 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 100.5 MB in the beginning and 89.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 253, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of someBinaryDOUBLEComparisonOperation at line 261.
Possible FailurePath:
[L39-L44] static const double atanhi_atan[] = {
4.63647609000806093515e-01,
7.85398163397448278999e-01,
9.82793723247329054082e-01,
1.57079632679489655800e+00,
};
[L46-L51] static const double atanlo_atan[] = {
2.26987774529616870924e-17,
3.06161699786838301793e-17,
1.39033110312309984516e-17,
6.12323399573676603587e-17,
};
[L53-L60] static const double aT_atan[] = {
3.33333333333329318027e-01, -1.99999999998764832476e-01,
1.42857142725034663711e-01, -1.11111104054623557880e-01,
9.09088713343650656196e-02, -7.69187620504482999495e-02,
6.66107313738753120669e-02, -5.83357013379057348645e-02,
4.97687799461593236017e-02, -3.65315727442169155270e-02,
1.62858201153657823623e-02,
};
[L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01,
pi_o_2 = 1.5707963267948965580E+00,
pi = 3.1415926535897931160E+00, huge_atan = 1.0e300;
[L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0,
pi_lo_atan2 = 1.2246467991473531772E-16;
[L253] double x = -0.0;
[L254] double y = __VERIFIER_nondet_double();
[L256] COND TRUE y < 0.0
[L258] CALL, EXPR __ieee754_atan2(y, x)
[L145] double z;
[L146] __int32_t k, m, hx, hy, ix, iy;
[L147] __uint32_t lx, ly;
[L150] ieee_double_shape_type ew_u;
[L151] ew_u.value = (x)
[L152] EXPR ew_u.parts.msw
[L152] (hx) = ew_u.parts.msw
[L153] EXPR ew_u.parts.lsw
[L153] (lx) = ew_u.parts.lsw
[L155] ix = hx & 0x7fffffff
[L157] ieee_double_shape_type ew_u;
[L158] ew_u.value = (y)
[L159] EXPR ew_u.parts.msw
[L159] (hy) = ew_u.parts.msw
[L160] EXPR ew_u.parts.lsw
[L160] (ly) = ew_u.parts.lsw
[L162] iy = hy & 0x7fffffff
[L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) ||
((iy | ((ly | -ly) >> 31)) > 0x7ff00000)
[L165] return x + y;
[L258] RET, EXPR __ieee754_atan2(y, x)
[L258] double res = __ieee754_atan2(y, x);
[L261] COND TRUE res != -pi_o_2
[L262] CALL reach_error()
[L3] __assert_fail("0", "double_req_bl_0662a.c", 3, "reach_error")
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 7 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 18 SDslu, 124 SDs, 0 SdLazy, 138 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1957 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...