/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=HIGHLEXORDER --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/float_req_bl_0730a.c
--------------------------------------------------------------------------------
This is Ultimate 0.1.25-c90d42b
[2020-09-24 22:37:12,925 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2020-09-24 22:37:12,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 22:37:12,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 22:37:12,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 22:37:12,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 22:37:12,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-09-24 22:37:12,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2020-09-24 22:37:12,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-09-24 22:37:13,001 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 22:37:13,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 22:37:13,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 22:37:13,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 22:37:13,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 22:37:13,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 22:37:13,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 22:37:13,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 22:37:13,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 22:37:13,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 22:37:13,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 22:37:13,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 22:37:13,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 22:37:13,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 22:37:13,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 22:37:13,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 22:37:13,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 22:37:13,038 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 22:37:13,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 22:37:13,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 22:37:13,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 22:37:13,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 22:37:13,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 22:37:13,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 22:37:13,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 22:37:13,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 22:37:13,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2020-09-24 22:37:13,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-09-24 22:37:13,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-09-24 22:37:13,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2020-09-24 22:37:13,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2020-09-24 22:37:13,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 22:37:13,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-09-24 22:37:13,107 INFO L113 SettingsManager]: Loading preferences was successful
[2020-09-24 22:37:13,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 22:37:13,110 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 22:37:13,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2020-09-24 22:37:13,110 INFO L138 SettingsManager]: * Use SBE=true
[2020-09-24 22:37:13,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 22:37:13,111 INFO L138 SettingsManager]: * sizeof long=4
[2020-09-24 22:37:13,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2020-09-24 22:37:13,111 INFO L138 SettingsManager]: * sizeof POINTER=4
[2020-09-24 22:37:13,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2020-09-24 22:37:13,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 22:37:13,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 22:37:13,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 22:37:13,113 INFO L138 SettingsManager]: * sizeof long double=12
[2020-09-24 22:37:13,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false
[2020-09-24 22:37:13,114 INFO L138 SettingsManager]: * Use constant arrays=true
[2020-09-24 22:37:13,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2020-09-24 22:37:13,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 22:37:13,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2020-09-24 22:37:13,114 INFO L138 SettingsManager]: * To the following directory=./dump/
[2020-09-24 22:37:13,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2020-09-24 22:37:13,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 22:37:13,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 22:37:13,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 22:37:13,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 22:37:13,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2020-09-24 22:37:13,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 22:37:13,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 22:37:13,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE
[2020-09-24 22:37:13,116 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true;
[2020-09-24 22:37:13,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 22:37:13,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 22:37:13,687 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 22:37:13,689 INFO L271 PluginConnector]: Initializing CDTParser...
[2020-09-24 22:37:13,690 INFO L275 PluginConnector]: CDTParser initialized
[2020-09-24 22:37:13,691 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c
[2020-09-24 22:37:13,786 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc6f468dc/b2afd1cf8c064fffbd588a21185507e1/FLAGbafaaaf91
[2020-09-24 22:37:14,338 INFO L306 CDTParser]: Found 1 translation units.
[2020-09-24 22:37:14,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c
[2020-09-24 22:37:14,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc6f468dc/b2afd1cf8c064fffbd588a21185507e1/FLAGbafaaaf91
[2020-09-24 22:37:14,658 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cc6f468dc/b2afd1cf8c064fffbd588a21185507e1
[2020-09-24 22:37:14,672 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 22:37:14,679 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 22:37:14,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 22:37:14,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 22:37:14,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 22:37:14,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:14" (1/1) ...
[2020-09-24 22:37:14,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53afdaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:14, skipping insertion in model container
[2020-09-24 22:37:14,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:14" (1/1) ...
[2020-09-24 22:37:14,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2020-09-24 22:37:14,730 INFO L178 MainTranslator]: Built tables and reachable declarations
[2020-09-24 22:37:14,977 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 22:37:14,983 INFO L203 MainTranslator]: Completed pre-run
[2020-09-24 22:37:15,024 INFO L206 PostProcessor]: Analyzing one entry point: main
[2020-09-24 22:37:15,053 INFO L208 MainTranslator]: Completed translation
[2020-09-24 22:37:15,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15 WrapperNode
[2020-09-24 22:37:15,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 22:37:15,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 22:37:15,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 22:37:15,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 22:37:15,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15" (1/1) ...
[2020-09-24 22:37:15,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15" (1/1) ...
[2020-09-24 22:37:15,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15" (1/1) ...
[2020-09-24 22:37:15,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15" (1/1) ...
[2020-09-24 22:37:15,180 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15" (1/1) ...
[2020-09-24 22:37:15,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15" (1/1) ...
[2020-09-24 22:37:15,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15" (1/1) ...
[2020-09-24 22:37:15,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 22:37:15,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 22:37:15,195 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 22:37:15,198 INFO L275 PluginConnector]: RCFGBuilder initialized
[2020-09-24 22:37:15,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 22:37:15,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 22:37:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 22:37:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf
[2020-09-24 22:37:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float
[2020-09-24 22:37:15,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 22:37:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 22:37:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float
[2020-09-24 22:37:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf
[2020-09-24 22:37:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-09-24 22:37:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~real
[2020-09-24 22:37:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2020-09-24 22:37:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-09-24 22:37:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2020-09-24 22:37:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~real
[2020-09-24 22:37:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float
[2020-09-24 22:37:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2020-09-24 22:37:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 22:37:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 22:37:15,781 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 22:37:15,782 INFO L295 CfgBuilder]: Removed 8 assume(true) statements.
[2020-09-24 22:37:15,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:15 BoogieIcfgContainer
[2020-09-24 22:37:15,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 22:37:15,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 22:37:15,790 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 22:37:15,794 INFO L275 PluginConnector]: TraceAbstraction initialized
[2020-09-24 22:37:15,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:37:14" (1/3) ...
[2020-09-24 22:37:15,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f15169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:15, skipping insertion in model container
[2020-09-24 22:37:15,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:15" (2/3) ...
[2020-09-24 22:37:15,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29f15169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:15, skipping insertion in model container
[2020-09-24 22:37:15,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:15" (3/3) ...
[2020-09-24 22:37:15,799 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c
[2020-09-24 22:37:15,812 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 22:37:15,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 22:37:15,845 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 22:37:15,875 INFO L375 AbstractCegarLoop]: Interprodecural is true
[2020-09-24 22:37:15,875 INFO L376 AbstractCegarLoop]: Hoare is true
[2020-09-24 22:37:15,875 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 22:37:15,876 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 22:37:15,876 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 22:37:15,876 INFO L380 AbstractCegarLoop]: Difference is false
[2020-09-24 22:37:15,876 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 22:37:15,876 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 22:37:15,900 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states.
[2020-09-24 22:37:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2020-09-24 22:37:15,910 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 22:37:15,911 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]
[2020-09-24 22:37:15,911 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 22:37:15,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 22:37:15,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1347664399, now seen corresponding path program 1 times
[2020-09-24 22:37:15,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 22:37:15,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253445584]
[2020-09-24 22:37:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 22:37:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:37:16,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:37:16,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:37:16,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:37:16,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52
[2020-09-24 22:37:16,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 22:37:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270
[2020-09-24 22:37:16,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:37:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:37:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43
[2020-09-24 22:37:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:37:16,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-09-24 22:37:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 22:37:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:37:16,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:37:16,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:37:16,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 22:37:16,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:37:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-09-24 22:37:16,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:37:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:37:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2
[2020-09-24 22:37:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:37:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:37:16,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10
[2020-09-24 22:37:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:37:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:37:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:37:16,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:37:16,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22
[2020-09-24 22:37:16,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-09-24 22:37:16,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26
[2020-09-24 22:37:16,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:37:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:37:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13
[2020-09-24 22:37:16,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:37:16,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-09-24 22:37:16,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-09-24 22:37:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 22:37:16,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking...
[2020-09-24 22:37:16,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000
[2020-09-24 22:37:16,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13
[2020-09-24 22:37:16,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-09-24 22:37:16,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-09-24 22:37:16,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER
[2020-09-24 22:37:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-09-24 22:37:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-09-24 22:37:16,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-09-24 22:37:16,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-09-24 22:37:16,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 22:37:16,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253445584]
[2020-09-24 22:37:16,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 22:37:16,536 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 22:37:16,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128697758]
[2020-09-24 22:37:16,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 22:37:16,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 22:37:16,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 22:37:16,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2020-09-24 22:37:16,563 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states.
[2020-09-24 22:37:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 22:37:16,979 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions.
[2020-09-24 22:37:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2020-09-24 22:37:16,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41
[2020-09-24 22:37:16,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 22:37:16,996 INFO L225 Difference]: With dead ends: 212
[2020-09-24 22:37:16,996 INFO L226 Difference]: Without dead ends: 110
[2020-09-24 22:37:17,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2020-09-24 22:37:17,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2020-09-24 22:37:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2020-09-24 22:37:17,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2020-09-24 22:37:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions.
[2020-09-24 22:37:17,065 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 41
[2020-09-24 22:37:17,065 INFO L84 Accepts]: Finished accepts. word is rejected.
[2020-09-24 22:37:17,065 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions.
[2020-09-24 22:37:17,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 22:37:17,066 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions.
[2020-09-24 22:37:17,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2020-09-24 22:37:17,069 INFO L414 BasicCegarLoop]: Found error trace
[2020-09-24 22:37:17,069 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, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 22:37:17,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 22:37:17,070 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 22:37:17,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 22:37:17,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1528682335, now seen corresponding path program 1 times
[2020-09-24 22:37:17,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 22:37:17,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056968209]
[2020-09-24 22:37:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 22:37:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 22:37:17,159 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 22:37:17,159 INFO L520 BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 22:37:17,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 22:37:17,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:37:17 BoogieIcfgContainer
[2020-09-24 22:37:17,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 22:37:17,209 INFO L168 Benchmark]: Toolchain (without parser) took 2533.79 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 102.2 MB in the beginning and 188.2 MB in the end (delta: -86.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB.
[2020-09-24 22:37:17,210 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-09-24 22:37:17,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.69 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 89.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB.
[2020-09-24 22:37:17,212 INFO L168 Benchmark]: Boogie Preprocessor took 139.23 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 89.4 MB in the beginning and 178.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB.
[2020-09-24 22:37:17,213 INFO L168 Benchmark]: RCFGBuilder took 594.38 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 150.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB.
[2020-09-24 22:37:17,214 INFO L168 Benchmark]: TraceAbstraction took 1415.27 ms. Allocated memory was 201.3 MB in the beginning and 235.9 MB in the end (delta: 34.6 MB). Free memory was 150.0 MB in the beginning and 188.2 MB in the end (delta: -38.3 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 22:37:17,218 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 140.0 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 374.69 ms. Allocated memory is still 140.0 MB. Free memory was 101.6 MB in the beginning and 89.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 139.23 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 89.4 MB in the beginning and 178.5 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 594.38 ms. Allocated memory is still 201.3 MB. Free memory was 178.5 MB in the beginning and 150.6 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 1415.27 ms. Allocated memory was 201.3 MB in the beginning and 235.9 MB in the end (delta: 34.6 MB). Free memory was 150.0 MB in the beginning and 188.2 MB in the end (delta: -38.3 MB). There was no memory consumed. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- UnprovableResult [Line: 107]: Unable to prove that call of __VERIFIER_error() unreachable
Unable to prove that call of __VERIFIER_error() unreachable
Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 27, overapproximation of bitwiseAnd at line 89.
Possible FailurePath:
[L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30;
[L101] float x = 1.0f / 0.0f;
[L103] CALL, EXPR __ieee754_sqrtf(x)
[L15] float z;
[L16] __uint32_t r, hx;
[L17] __int32_t ix, s, q, m, t, i;
[L20] ieee_float_shape_type gf_u;
[L21] gf_u.value = (x)
[L22] EXPR gf_u.word
[L22] (ix) = gf_u.word
[L24] hx = ix & 0x7fffffff
[L26] COND TRUE !((hx) < 0x7f800000L)
[L27] return x * x + x;
[L103] RET, EXPR __ieee754_sqrtf(x)
[L103] float res = __ieee754_sqrtf(x);
[L106] CALL, EXPR isinf_float(res)
[L83] __int32_t ix;
[L85] ieee_float_shape_type gf_u;
[L86] gf_u.value = (x)
[L87] EXPR gf_u.word
[L87] (ix) = gf_u.word
[L89] ix &= 0x7fffffff
[L90] return ((ix) == 0x7f800000L);
[L106] RET, EXPR isinf_float(res)
[L106] COND TRUE !isinf_float(res)
[L107] __VERIFIER_error()
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 117 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 27 SDslu, 93 SDs, 0 SdLazy, 127 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred 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, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3160 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...