/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:59,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:59,143 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:59,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:57:59,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:57:59,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:57:59,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:57:59,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:57:59,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:57:59,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:57:59,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:57:59,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:57:59,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:59,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:59,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:59,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:59,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:59,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:59,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:59,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:59,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:59,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:59,217 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:59,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:59,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:57:59,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:59,258 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:59,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:59,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 21:57:59,317 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:59,318 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:59,319 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:59,319 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:59,320 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:59,320 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:59,320 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:59,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:59,321 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:59,321 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:59,321 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:59,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:59,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:59,322 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:59,323 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:59,323 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:59,323 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:59,324 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:59,324 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:59,324 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:59,324 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:59,325 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:59,325 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:59,325 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:59,326 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:59,326 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:59,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:59,326 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:59,327 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:59,327 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:59,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:59,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:59,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:59,718 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:59,719 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:59,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1071.c [2020-11-06 21:57:59,790 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347571db5/898ef271e4754427905f7aaa49e7bad4/FLAGeba74b741 [2020-11-06 21:58:00,390 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:58:00,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1071.c [2020-11-06 21:58:00,398 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347571db5/898ef271e4754427905f7aaa49e7bad4/FLAGeba74b741 [2020-11-06 21:58:00,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/347571db5/898ef271e4754427905f7aaa49e7bad4 [2020-11-06 21:58:00,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:58:00,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:58:00,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:00,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:58:00,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:58:00,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:00" (1/1) ... [2020-11-06 21:58:00,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552a022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:00, skipping insertion in model container [2020-11-06 21:58:00,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:00" (1/1) ... [2020-11-06 21:58:00,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:58:00,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:58:00,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:01,003 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:58:01,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:01,051 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:58:01,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01 WrapperNode [2020-11-06 21:58:01,051 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:01,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:58:01,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:58:01,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:58:01,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01" (1/1) ... [2020-11-06 21:58:01,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01" (1/1) ... [2020-11-06 21:58:01,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01" (1/1) ... [2020-11-06 21:58:01,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01" (1/1) ... [2020-11-06 21:58:01,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01" (1/1) ... [2020-11-06 21:58:01,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01" (1/1) ... [2020-11-06 21:58:01,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01" (1/1) ... [2020-11-06 21:58:01,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:58:01,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:58:01,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:58:01,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:58:01,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-06 21:58:01,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:58:01,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:58:01,209 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:58:01,209 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-11-06 21:58:01,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-11-06 21:58:01,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:58:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:58:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:58:01,211 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:58:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:58:01,212 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-11-06 21:58:01,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:58:01,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:58:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:58:01,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:58:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:58:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-11-06 21:58:01,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:58:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:58:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:58:01,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:58:01,860 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:58:01,860 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-06 21:58:01,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:01 BoogieIcfgContainer [2020-11-06 21:58:01,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:58:01,866 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:58:01,866 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:58:01,870 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:58:01,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:00" (1/3) ... [2020-11-06 21:58:01,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb7cd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:01, skipping insertion in model container [2020-11-06 21:58:01,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:01" (2/3) ... [2020-11-06 21:58:01,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fb7cd73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:01, skipping insertion in model container [2020-11-06 21:58:01,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:01" (3/3) ... [2020-11-06 21:58:01,875 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1071.c [2020-11-06 21:58:01,898 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:58:01,903 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:58:01,917 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:58:01,957 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:58:01,957 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:58:01,957 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:58:01,958 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:58:01,958 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:58:01,958 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:58:01,958 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:58:01,958 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:58:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-11-06 21:58:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-06 21:58:01,991 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:01,992 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] [2020-11-06 21:58:01,992 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:02,001 INFO L82 PathProgramCache]: Analyzing trace with hash -756220712, now seen corresponding path program 1 times [2020-11-06 21:58:02,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:02,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977864183] [2020-11-06 21:58:02,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:02,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:58:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:02,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:58:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:02,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 21:58:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:58:02,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977864183] [2020-11-06 21:58:02,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:58:02,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:58:02,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416356832] [2020-11-06 21:58:02,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:58:02,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:02,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:58:02,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:58:02,359 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-11-06 21:58:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:02,577 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2020-11-06 21:58:02,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:58:02,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-11-06 21:58:02,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:02,587 INFO L225 Difference]: With dead ends: 65 [2020-11-06 21:58:02,588 INFO L226 Difference]: Without dead ends: 31 [2020-11-06 21:58:02,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:58:02,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-06 21:58:02,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-06 21:58:02,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-06 21:58:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-06 21:58:02,637 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2020-11-06 21:58:02,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:02,638 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-06 21:58:02,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:58:02,638 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-06 21:58:02,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 21:58:02,639 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:02,640 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] [2020-11-06 21:58:02,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:58:02,640 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:02,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:02,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1304888725, now seen corresponding path program 1 times [2020-11-06 21:58:02,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:02,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637217768] [2020-11-06 21:58:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:58:02,713 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:58:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:58:02,765 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:58:02,798 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:58:02,799 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:58:02,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:58:02,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:58:02 BoogieIcfgContainer [2020-11-06 21:58:02,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:58:02,846 INFO L168 Benchmark]: Toolchain (without parser) took 2069.05 ms. Allocated memory is still 161.5 MB. Free memory was 137.3 MB in the beginning and 105.5 MB in the end (delta: 31.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:02,847 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 161.5 MB. Free memory is still 136.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:58:02,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.19 ms. Allocated memory is still 161.5 MB. Free memory was 136.5 MB in the beginning and 126.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:02,851 INFO L168 Benchmark]: Boogie Preprocessor took 57.30 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 124.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:02,852 INFO L168 Benchmark]: RCFGBuilder took 751.70 ms. Allocated memory is still 161.5 MB. Free memory was 124.7 MB in the beginning and 107.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:02,854 INFO L168 Benchmark]: TraceAbstraction took 975.32 ms. Allocated memory is still 161.5 MB. Free memory was 106.9 MB in the beginning and 106.0 MB in the end (delta: 886.7 kB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:02,865 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 161.5 MB. Free memory is still 136.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 266.19 ms. Allocated memory is still 161.5 MB. Free memory was 136.5 MB in the beginning and 126.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.30 ms. Allocated memory is still 161.5 MB. Free memory was 126.6 MB in the beginning and 124.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 751.70 ms. Allocated memory is still 161.5 MB. Free memory was 124.7 MB in the beginning and 107.3 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 975.32 ms. Allocated memory is still 161.5 MB. Free memory was 106.9 MB in the beginning and 106.0 MB in the end (delta: 886.7 kB). Peak memory consumption was 2.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 4]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 40, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L54] float x = 0.0f / 0.0f; [L55] CALL, EXPR trunc_float(x) VAL [\old(x)=4294967302] [L15] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=4294967302, x=4294967302] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=4294967302, exponent_less_127=255, signbit=-1, w=-2, x=4294967302] [L23] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=4294967302, exponent_less_127=255, signbit=-1, w=-2, x=4294967302] [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; VAL [\old(x)=4294967302, exponent_less_127=255, signbit=-1, w=-2, x=4294967302] [L55] RET, EXPR trunc_float(x) VAL [trunc_float(x)=4294967300, x=4294967302] [L55] float res = trunc_float(x); [L58] CALL, EXPR isnan_float(res) VAL [\old(x)=4294967300] [L46] return x != x; VAL [\old(x)=4294967300, \result=0, x=4294967300] [L58] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4294967300, x=4294967302] [L58] COND TRUE !isnan_float(res) [L59] CALL reach_error() [L4] __assert_fail("0", "float_req_bl_1071.c", 4, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 10 SDslu, 24 SDs, 0 SdLazy, 32 SolverSat, 8 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1408 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...