/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/float_req_bl_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:09:08,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:09:08,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:09:08,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:09:08,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:09:08,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:09:08,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:09:08,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:09:08,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:09:08,761 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:09:08,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:09:08,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:09:08,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:09:08,768 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:09:08,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:09:08,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:09:08,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:09:08,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:09:08,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:09:08,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:09:08,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:09:08,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:09:08,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:09:08,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:09:08,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:09:08,829 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:09:08,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:09:08,831 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:09:08,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:09:08,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:09:08,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:09:08,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:09:08,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:09:08,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:09:08,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:09:08,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:09:08,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:09:08,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:09:08,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:09:08,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:09:08,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:09:08,851 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 09:09:08,904 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:09:08,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:09:08,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:09:08,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:09:08,910 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:09:08,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:09:08,911 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:09:08,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:09:08,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:09:08,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:09:08,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:09:08,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:09:08,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:09:08,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:09:08,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:09:08,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:09:08,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:09:08,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:09:08,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:09:08,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:09:08,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:09:08,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:09:08,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:09:08,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:09:08,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:09:08,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:09:08,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:09:08,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:09:08,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:09:08,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:09:09,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:09:09,419 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:09:09,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:09:09,424 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:09:09,425 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:09:09,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-10-29 09:09:09,502 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9aa993b7/43c908d496284aafaf44373862511dd5/FLAG996db5217 [2020-10-29 09:09:10,254 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:09:10,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-10-29 09:09:10,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9aa993b7/43c908d496284aafaf44373862511dd5/FLAG996db5217 [2020-10-29 09:09:10,603 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9aa993b7/43c908d496284aafaf44373862511dd5 [2020-10-29 09:09:10,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:09:10,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:09:10,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:10,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:09:10,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:09:10,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:10" (1/1) ... [2020-10-29 09:09:10,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e918245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10, skipping insertion in model container [2020-10-29 09:09:10,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:10" (1/1) ... [2020-10-29 09:09:10,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:09:10,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:09:10,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:10,859 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:09:10,886 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:10,905 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:09:10,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10 WrapperNode [2020-10-29 09:09:10,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:10,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:09:10,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:09:10,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:09:10,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10" (1/1) ... [2020-10-29 09:09:10,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10" (1/1) ... [2020-10-29 09:09:10,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10" (1/1) ... [2020-10-29 09:09:10,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10" (1/1) ... [2020-10-29 09:09:10,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10" (1/1) ... [2020-10-29 09:09:10,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10" (1/1) ... [2020-10-29 09:09:10,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10" (1/1) ... [2020-10-29 09:09:10,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:09:10,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:09:10,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:09:10,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:09:10,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10" (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 [2020-10-29 09:09:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:09:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:09:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:09:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-10-29 09:09:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-10-29 09:09:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-29 09:09:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:09:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:09:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:09:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-10-29 09:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:09:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:09:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:09:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-10-29 09:09:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-29 09:09:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:09:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:09:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:09:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:09:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:09:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:09:11,650 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:09:11,650 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-29 09:09:11,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:11 BoogieIcfgContainer [2020-10-29 09:09:11,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:09:11,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:09:11,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:09:11,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:09:11,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:09:10" (1/3) ... [2020-10-29 09:09:11,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71858644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:11, skipping insertion in model container [2020-10-29 09:09:11,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:10" (2/3) ... [2020-10-29 09:09:11,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71858644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:11, skipping insertion in model container [2020-10-29 09:09:11,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:11" (3/3) ... [2020-10-29 09:09:11,665 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-10-29 09:09:11,679 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:09:11,685 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:09:11,700 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:09:11,746 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:09:11,746 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:09:11,746 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:09:11,746 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:09:11,746 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:09:11,747 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:09:11,747 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:09:11,747 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:09:11,773 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-29 09:09:11,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:09:11,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:11,783 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] [2020-10-29 09:09:11,783 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:11,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:11,792 INFO L82 PathProgramCache]: Analyzing trace with hash -892085035, now seen corresponding path program 1 times [2020-10-29 09:09:11,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:11,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509978124] [2020-10-29 09:09:11,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:09:12,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:12,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-29 09:09:12,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 09:09:12,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:12,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:09:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:12,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:12,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:09:12,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:12,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:12,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:12,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:12,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:09:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 09:09:12,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:12,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 09:09:12,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:12,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 09:09:12,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:12,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:12,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:09:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:12,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:12,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:12,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:09:12,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:12,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 09:09:12,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:12,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:09:12,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:12,614 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 09:09:12,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509978124] [2020-10-29 09:09:12,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:12,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:09:12,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427457674] [2020-10-29 09:09:12,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:09:12,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:12,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:09:12,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:09:12,643 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2020-10-29 09:09:12,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:12,982 INFO L93 Difference]: Finished difference Result 88 states and 119 transitions. [2020-10-29 09:09:12,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:09:12,984 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-10-29 09:09:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:12,994 INFO L225 Difference]: With dead ends: 88 [2020-10-29 09:09:12,994 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 09:09:12,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:09:13,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 09:09:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-29 09:09:13,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:09:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-29 09:09:13,067 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 23 [2020-10-29 09:09:13,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:13,067 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-29 09:09:13,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:09:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-29 09:09:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:09:13,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:13,070 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] [2020-10-29 09:09:13,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:09:13,071 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:13,072 INFO L82 PathProgramCache]: Analyzing trace with hash -2070746802, now seen corresponding path program 1 times [2020-10-29 09:09:13,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:13,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888318224] [2020-10-29 09:09:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:13,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:13,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:13,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 09:09:13,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 09:09:13,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:13,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-29 09:09:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:13,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:13,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:13,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:13,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:13,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:13,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:13,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:09:13,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:13,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:13,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:13,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:09:13,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:09:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:13,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:13,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:13,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:09:13,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:13,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 09:09:13,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:13,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:13,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:09:13,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 09:09:13,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:13,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:09:13,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:13,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:13,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:13,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 09:09:13,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:13,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 09:09:13,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:13,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:09:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:13,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:09:13,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:13,624 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 09:09:13,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888318224] [2020-10-29 09:09:13,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:13,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:09:13,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724924833] [2020-10-29 09:09:13,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:09:13,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:13,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:09:13,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:09:13,628 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 6 states. [2020-10-29 09:09:13,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:13,808 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-10-29 09:09:13,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 09:09:13,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-10-29 09:09:13,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:13,811 INFO L225 Difference]: With dead ends: 65 [2020-10-29 09:09:13,811 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 09:09:13,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:09:13,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 09:09:13,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-29 09:09:13,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:09:13,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-29 09:09:13,824 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 27 [2020-10-29 09:09:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:13,825 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-29 09:09:13,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:09:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-29 09:09:13,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:09:13,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:13,826 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] [2020-10-29 09:09:13,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:09:13,827 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:13,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:13,827 INFO L82 PathProgramCache]: Analyzing trace with hash -1941664083, now seen corresponding path program 1 times [2020-10-29 09:09:13,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:13,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468544543] [2020-10-29 09:09:13,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:09:13,849 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:09:13,849 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:09:13,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:09:13,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:09:13 BoogieIcfgContainer [2020-10-29 09:09:13,872 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:09:13,875 INFO L168 Benchmark]: Toolchain (without parser) took 3265.34 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 53.9 MB in the end (delta: 72.6 MB). Peak memory consumption was 73.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,875 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:13,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.35 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,877 INFO L168 Benchmark]: Boogie Preprocessor took 62.80 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,878 INFO L168 Benchmark]: RCFGBuilder took 682.17 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 127.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,879 INFO L168 Benchmark]: TraceAbstraction took 2216.36 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 53.9 MB in the end (delta: 73.2 MB). Peak memory consumption was 72.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:13,882 INFO L339 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 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 291.35 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.80 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 682.17 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 127.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2216.36 ms. Allocated memory is still 151.0 MB. Free memory was 127.1 MB in the beginning and 53.9 MB in the end (delta: 73.2 MB). Peak memory consumption was 72.7 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 someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 76. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L77] CALL, EXPR fmax_float(x, y) [L46] CALL, EXPR __fpclassify_float(x) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] RET, EXPR __fpclassify_float(x) [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 20 SDslu, 235 SDs, 0 SdLazy, 148 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4344 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...