/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_1122a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:59,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:59,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:59,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:59,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:59,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:59,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:59,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:59,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:59,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:59,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:59,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:59,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:59,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:59,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:59,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:59,968 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:59,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:59,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:59,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:59,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:59,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:59,985 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:59,986 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:09:00,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:09:00,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:09:00,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:09:00,029 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:09:00,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:09:00,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:09:00,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:09:00,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:09:00,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:09:00,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:09:00,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:09:00,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:09:00,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:09:00,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:09:00,051 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:09:00,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:09:00,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:09:00,059 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 09:09:00,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:09:00,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:09:00,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:09:00,115 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:09:00,115 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:09:00,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:09:00,116 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:09:00,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:09:00,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:09:00,116 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:09:00,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:09:00,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:09:00,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:09:00,118 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:09:00,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:09:00,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:09:00,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:09:00,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:09:00,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:09:00,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:09:00,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:09:00,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:09:00,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:09:00,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:09:00,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:09:00,122 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:09:00,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:09:00,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:09:00,122 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:09:00,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:09:00,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:09:00,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:09:00,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:09:00,616 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:09:00,617 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:09:00,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-29 09:09:00,701 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7b66b10e/7ad2c46c030240c98cb2276b1948a5d1/FLAG4793eae4c [2020-10-29 09:09:01,367 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:09:01,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1122a.c [2020-10-29 09:09:01,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7b66b10e/7ad2c46c030240c98cb2276b1948a5d1/FLAG4793eae4c [2020-10-29 09:09:01,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f7b66b10e/7ad2c46c030240c98cb2276b1948a5d1 [2020-10-29 09:09:01,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:09:01,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:09:01,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:01,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:09:01,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:09:01,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:01" (1/1) ... [2020-10-29 09:09:01,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d49d4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:01, skipping insertion in model container [2020-10-29 09:09:01,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:09:01" (1/1) ... [2020-10-29 09:09:01,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:09:01,747 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:09:01,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:01,960 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:09:02,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:09:02,053 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:09:02,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02 WrapperNode [2020-10-29 09:09:02,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:09:02,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:09:02,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:09:02,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:09:02,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02" (1/1) ... [2020-10-29 09:09:02,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02" (1/1) ... [2020-10-29 09:09:02,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02" (1/1) ... [2020-10-29 09:09:02,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02" (1/1) ... [2020-10-29 09:09:02,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02" (1/1) ... [2020-10-29 09:09:02,187 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02" (1/1) ... [2020-10-29 09:09:02,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02" (1/1) ... [2020-10-29 09:09:02,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:09:02,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:09:02,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:09:02,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:09:02,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02" (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 09:09:02,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:09:02,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:09:02,310 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:09:02,310 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-29 09:09:02,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-29 09:09:02,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:09:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:09:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:09:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:09:02,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:09:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-29 09:09:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-29 09:09:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:09:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:09:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:09:02,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:09:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:09:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-29 09:09:02,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:09:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:09:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:09:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-29 09:09:02,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:09:03,124 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:09:03,124 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-10-29 09:09:03,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:03 BoogieIcfgContainer [2020-10-29 09:09:03,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:09:03,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:09:03,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:09:03,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:09:03,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:09:01" (1/3) ... [2020-10-29 09:09:03,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32023fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:03, skipping insertion in model container [2020-10-29 09:09:03,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:09:02" (2/3) ... [2020-10-29 09:09:03,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32023fe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:09:03, skipping insertion in model container [2020-10-29 09:09:03,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:09:03" (3/3) ... [2020-10-29 09:09:03,139 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1122a.c [2020-10-29 09:09:03,151 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:09:03,155 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:09:03,172 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:09:03,201 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:09:03,201 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:09:03,202 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:09:03,202 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:09:03,202 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:09:03,202 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:09:03,202 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:09:03,202 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:09:03,222 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-10-29 09:09:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 09:09:03,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:03,230 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 09:09:03,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:03,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:03,237 INFO L82 PathProgramCache]: Analyzing trace with hash 859309759, now seen corresponding path program 1 times [2020-10-29 09:09:03,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:03,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247864856] [2020-10-29 09:09:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:03,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:03,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:03,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:03,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 09:09:03,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:03,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 09:09:03,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:03,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:03,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 09:09:03,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:03,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:09:03,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:09:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:03,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:03,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:03,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:03,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:03,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:09:03,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:03,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:09:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:03,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:09:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:03,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:03,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:03,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:03,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:09:03,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:09:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 09:09:03,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:03,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 09:09:03,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:09:03,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:09:03,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:09:03,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:09:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:09:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:09:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:09:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:09:03,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:09:03,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:09:03,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:09:03,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:09:03,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:09:03,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:09:04,001 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 09:09:04,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247864856] [2020-10-29 09:09:04,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:09:04,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:09:04,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000018656] [2020-10-29 09:09:04,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:09:04,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:09:04,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:09:04,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:09:04,032 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2020-10-29 09:09:04,198 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-10-29 09:09:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:09:04,535 INFO L93 Difference]: Finished difference Result 107 states and 164 transitions. [2020-10-29 09:09:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:09:04,538 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-29 09:09:04,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:09:04,548 INFO L225 Difference]: With dead ends: 107 [2020-10-29 09:09:04,549 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 09:09:04,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:09:04,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 09:09:04,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-29 09:09:04,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 09:09:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2020-10-29 09:09:04,605 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 23 [2020-10-29 09:09:04,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:09:04,605 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2020-10-29 09:09:04,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:09:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2020-10-29 09:09:04,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:09:04,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:09:04,607 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] [2020-10-29 09:09:04,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:09:04,608 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:09:04,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:09:04,609 INFO L82 PathProgramCache]: Analyzing trace with hash 853024034, now seen corresponding path program 1 times [2020-10-29 09:09:04,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:09:04,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350239791] [2020-10-29 09:09:04,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:09:04,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:09:04,698 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:09:04,698 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:09:04,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:09:04,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:09:04 BoogieIcfgContainer [2020-10-29 09:09:04,727 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:09:04,729 INFO L168 Benchmark]: Toolchain (without parser) took 3027.72 ms. Allocated memory is still 157.3 MB. Free memory was 139.5 MB in the beginning and 92.7 MB in the end (delta: 46.9 MB). Peak memory consumption was 47.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:04,730 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 157.3 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:09:04,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.77 ms. Allocated memory is still 157.3 MB. Free memory was 138.7 MB in the beginning and 140.9 MB in the end (delta: -2.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:04,732 INFO L168 Benchmark]: Boogie Preprocessor took 147.68 ms. Allocated memory is still 157.3 MB. Free memory was 140.9 MB in the beginning and 138.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:04,733 INFO L168 Benchmark]: RCFGBuilder took 919.08 ms. Allocated memory is still 157.3 MB. Free memory was 138.9 MB in the beginning and 112.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:04,734 INFO L168 Benchmark]: TraceAbstraction took 1597.51 ms. Allocated memory is still 157.3 MB. Free memory was 112.3 MB in the beginning and 92.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:09:04,737 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 157.3 MB. Free memory is still 130.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 346.77 ms. Allocated memory is still 157.3 MB. Free memory was 138.7 MB in the beginning and 140.9 MB in the end (delta: -2.2 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 147.68 ms. Allocated memory is still 157.3 MB. Free memory was 140.9 MB in the beginning and 138.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 919.08 ms. Allocated memory is still 157.3 MB. Free memory was 138.9 MB in the beginning and 112.7 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1597.51 ms. Allocated memory is still 157.3 MB. Free memory was 112.3 MB in the beginning and 92.7 MB in the end (delta: 19.6 MB). Peak memory consumption was 21.0 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 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L119] float x = 1.0f / 0.0f; [L120] float y = __VERIFIER_nondet_float(); [L121] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L121] RET, EXPR fmod_float(x, y) [L121] float res = fmod_float(x, y); [L124] CALL, EXPR isnan_float(res) [L110] return x != x; [L124] RET, EXPR isnan_float(res) [L124] COND TRUE !isnan_float(res) [L125] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1122a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 10 SDslu, 54 SDs, 0 SdLazy, 70 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 0.5s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1606 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...