/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 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=0.2 --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 -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:19:31,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:19:31,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:19:31,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:19:31,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:19:31,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:19:31,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:19:31,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:19:31,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:19:31,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:19:31,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:19:31,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:19:31,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:19:31,914 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:19:31,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:19:31,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:19:31,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:19:31,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:19:31,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:19:31,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:19:31,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:19:31,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:19:31,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:19:31,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:19:31,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:19:31,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:19:31,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:19:31,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:19:31,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:19:31,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:19:31,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:19:31,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:19:31,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:19:31,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:19:31,934 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:19:31,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:19:31,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:19:31,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:19:31,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:19:31,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:19:31,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:19:31,938 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 [2020-10-14 23:19:31,961 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:19:31,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:19:31,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:19:31,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:19:31,963 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:19:31,964 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:19:31,964 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:19:31,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:19:31,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:19:31,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:19:31,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:19:31,965 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:19:31,965 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:19:31,965 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:19:31,965 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:19:31,965 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:19:31,966 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:19:31,966 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:19:31,966 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:19:31,966 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:19:31,967 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:19:31,967 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:19:31,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:19:31,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:19:31,967 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:19:31,968 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:19:31,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:19:31,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:19:31,971 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:19:31,972 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 -> 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:19:32,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:19:32,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:19:32,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:19:32,312 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:19:32,312 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:19:32,313 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-14 23:19:32,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/177b695a1/eeb5d0b75ebe4836a1f11c6541ab9b9d/FLAGa3229d1db [2020-10-14 23:19:32,849 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:19:32,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122b.c [2020-10-14 23:19:32,857 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/177b695a1/eeb5d0b75ebe4836a1f11c6541ab9b9d/FLAGa3229d1db [2020-10-14 23:19:33,224 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/177b695a1/eeb5d0b75ebe4836a1f11c6541ab9b9d [2020-10-14 23:19:33,234 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:19:33,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:19:33,236 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:33,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:19:33,240 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:19:33,241 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:33" (1/1) ... [2020-10-14 23:19:33,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3c1036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33, skipping insertion in model container [2020-10-14 23:19:33,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:19:33" (1/1) ... [2020-10-14 23:19:33,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:19:33,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:19:33,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:33,547 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:19:33,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:19:33,736 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:19:33,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33 WrapperNode [2020-10-14 23:19:33,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:19:33,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:19:33,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:19:33,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:19:33,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33" (1/1) ... [2020-10-14 23:19:33,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33" (1/1) ... [2020-10-14 23:19:33,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33" (1/1) ... [2020-10-14 23:19:33,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33" (1/1) ... [2020-10-14 23:19:33,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33" (1/1) ... [2020-10-14 23:19:33,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33" (1/1) ... [2020-10-14 23:19:33,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33" (1/1) ... [2020-10-14 23:19:33,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:19:33,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:19:33,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:19:33,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:19:33,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33" (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 [2020-10-14 23:19:33,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:19:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:19:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-14 23:19:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-14 23:19:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:19:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:19:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-14 23:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-14 23:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-14 23:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:19:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-14 23:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-14 23:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-14 23:19:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:19:34,321 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:19:34,321 INFO L295 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-14 23:19:34,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:34 BoogieIcfgContainer [2020-10-14 23:19:34,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:19:34,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:19:34,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:19:34,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:19:34,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:19:33" (1/3) ... [2020-10-14 23:19:34,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd8bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:34, skipping insertion in model container [2020-10-14 23:19:34,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:19:33" (2/3) ... [2020-10-14 23:19:34,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cd8bd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:19:34, skipping insertion in model container [2020-10-14 23:19:34,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:19:34" (3/3) ... [2020-10-14 23:19:34,334 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122b.c [2020-10-14 23:19:34,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:19:34,352 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:19:34,362 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:19:34,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:19:34,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:19:34,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:19:34,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:19:34,388 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:19:34,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:19:34,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:19:34,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:19:34,409 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-10-14 23:19:34,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-14 23:19:34,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:34,417 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] [2020-10-14 23:19:34,418 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:34,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:34,424 INFO L82 PathProgramCache]: Analyzing trace with hash 527256461, now seen corresponding path program 1 times [2020-10-14 23:19:34,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:34,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45636737] [2020-10-14 23:19:34,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:34,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:34,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:19:34,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:34,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 23:19:34,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:34,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:34,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:34,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 23:19:34,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:34,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:19:34,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:19:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:34,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:34,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:34,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:34,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:19:34,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:34,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:19:34,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:34,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:34,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 23:19:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:34,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:34,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-14 23:19:34,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:19:34,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 23:19:34,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:34,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-14 23:19:34,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:34,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:34,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:19:34,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:19:34,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:19:34,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:19:34,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:19:34,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:19:34,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:19:34,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:19:34,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:19:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:19:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:19:34,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:19:34,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:19:34,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:19:34,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45636737] [2020-10-14 23:19:34,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:19:34,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:19:34,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602925937] [2020-10-14 23:19:35,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:19:35,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:19:35,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:19:35,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:19:35,020 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 4 states. [2020-10-14 23:19:35,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:19:35,278 INFO L93 Difference]: Finished difference Result 102 states and 158 transitions. [2020-10-14 23:19:35,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:19:35,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-14 23:19:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:19:35,291 INFO L225 Difference]: With dead ends: 102 [2020-10-14 23:19:35,292 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:19:35,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:19:35,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:19:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-14 23:19:35,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-14 23:19:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2020-10-14 23:19:35,378 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 22 [2020-10-14 23:19:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:19:35,381 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2020-10-14 23:19:35,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:19:35,382 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2020-10-14 23:19:35,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:19:35,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:19:35,383 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] [2020-10-14 23:19:35,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:19:35,384 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:19:35,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:19:35,384 INFO L82 PathProgramCache]: Analyzing trace with hash 847326186, now seen corresponding path program 1 times [2020-10-14 23:19:35,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:19:35,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044750495] [2020-10-14 23:19:35,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:19:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:19:35,484 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:19:35,484 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:19:35,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:19:35,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:19:35 BoogieIcfgContainer [2020-10-14 23:19:35,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:19:35,525 INFO L168 Benchmark]: Toolchain (without parser) took 2288.47 ms. Allocated memory was 147.3 MB in the beginning and 232.8 MB in the end (delta: 85.5 MB). Free memory was 103.6 MB in the beginning and 190.6 MB in the end (delta: -87.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 23:19:35,528 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-14 23:19:35,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.24 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 103.2 MB in the beginning and 179.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:35,530 INFO L168 Benchmark]: Boogie Preprocessor took 64.70 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 176.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:35,531 INFO L168 Benchmark]: RCFGBuilder took 522.87 ms. Allocated memory is still 202.9 MB. Free memory was 176.7 MB in the beginning and 150.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-10-14 23:19:35,533 INFO L168 Benchmark]: TraceAbstraction took 1195.15 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 149.9 MB in the beginning and 190.6 MB in the end (delta: -40.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-14 23:19:35,544 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 501.24 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 103.2 MB in the beginning and 179.5 MB in the end (delta: -76.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.70 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 176.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 522.87 ms. Allocated memory is still 202.9 MB. Free memory was 176.7 MB in the beginning and 150.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1195.15 ms. Allocated memory was 202.9 MB in the beginning and 232.8 MB in the end (delta: 29.9 MB). Free memory was 149.9 MB in the beginning and 190.6 MB in the end (delta: -40.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 123]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 108, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L117] float x = -1.0f / 0.0f; [L118] float y = __VERIFIER_nondet_float(); [L119] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L119] RET, EXPR fmod_float(x, y) [L119] float res = fmod_float(x, y); [L122] CALL, EXPR isnan_float(res) [L108] return x != x; [L122] RET, EXPR isnan_float(res) [L122] COND TRUE !isnan_float(res) [L123] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 8 SDslu, 55 SDs, 0 SdLazy, 71 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred 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, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 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...