/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:58:08,066 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:58:08,068 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:58:08,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:58:08,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:58:08,105 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:58:08,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:58:08,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:58:08,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:58:08,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:58:08,129 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:58:08,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:58:08,132 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:58:08,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:58:08,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:58:08,139 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:58:08,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:58:08,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:58:08,151 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:58:08,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:58:08,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:58:08,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:58:08,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:58:08,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:58:08,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:58:08,185 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:58:08,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:58:08,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:58:08,187 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 21:58:08,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:58:08,239 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:58:08,244 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:58:08,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:58:08,244 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:58:08,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:58:08,245 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:58:08,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:58:08,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:58:08,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:58:08,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:58:08,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:58:08,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:58:08,247 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:58:08,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:58:08,247 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:58:08,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:58:08,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:58:08,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:58:08,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:58:08,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:58:08,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:58:08,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:58:08,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:58:08,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:58:08,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:58:08,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:58:08,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:58:08,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:58:08,250 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:58:08,647 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:58:08,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:58:08,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:58:08,679 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:58:08,679 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:58:08,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-11-06 21:58:08,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb901184/8e01ec85ecbb4a91b2560ceafe75bc0b/FLAG2b84548cf [2020-11-06 21:58:09,452 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:58:09,453 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-11-06 21:58:09,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb901184/8e01ec85ecbb4a91b2560ceafe75bc0b/FLAG2b84548cf [2020-11-06 21:58:09,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8eb901184/8e01ec85ecbb4a91b2560ceafe75bc0b [2020-11-06 21:58:09,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:58:09,796 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:58:09,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:09,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:58:09,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:58:09,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:09" (1/1) ... [2020-11-06 21:58:09,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@436f9c70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:09, skipping insertion in model container [2020-11-06 21:58:09,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:09" (1/1) ... [2020-11-06 21:58:09,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:58:09,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:58:10,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:10,059 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:58:10,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:10,120 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:58:10,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10 WrapperNode [2020-11-06 21:58:10,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:10,122 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:58:10,122 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:58:10,122 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:58:10,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,164 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,193 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:58:10,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:58:10,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:58:10,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:58:10,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (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 21:58:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:58:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:58:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:58:10,272 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-11-06 21:58:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-11-06 21:58:10,273 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:58:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:58:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:58:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:58:10,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:58:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-11-06 21:58:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-11-06 21:58:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:58:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:58:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:58:10,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:58:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:58:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-11-06 21:58:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:58:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:58:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:58:10,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-06 21:58:10,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:58:10,853 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:58:10,853 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-06 21:58:10,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:10 BoogieIcfgContainer [2020-11-06 21:58:10,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:58:10,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:58:10,857 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:58:10,860 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:58:10,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:09" (1/3) ... [2020-11-06 21:58:10,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260070f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:10, skipping insertion in model container [2020-11-06 21:58:10,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (2/3) ... [2020-11-06 21:58:10,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@260070f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:10, skipping insertion in model container [2020-11-06 21:58:10,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:10" (3/3) ... [2020-11-06 21:58:10,864 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-11-06 21:58:10,880 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:58:10,884 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:58:10,897 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:58:10,925 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:58:10,925 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:58:10,925 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:58:10,925 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:58:10,926 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:58:10,926 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:58:10,926 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:58:10,926 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:58:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-11-06 21:58:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 21:58:10,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:10,951 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] [2020-11-06 21:58:10,952 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:10,958 INFO L82 PathProgramCache]: Analyzing trace with hash -575871545, now seen corresponding path program 1 times [2020-11-06 21:58:10,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:10,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215357149] [2020-11-06 21:58:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:11,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:11,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:58:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:11,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 21:58:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:11,311 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 21:58:11,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215357149] [2020-11-06 21:58:11,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:58:11,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:58:11,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901080762] [2020-11-06 21:58:11,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:58:11,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:11,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:58:11,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:58:11,339 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-11-06 21:58:11,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:11,679 INFO L93 Difference]: Finished difference Result 121 states and 186 transitions. [2020-11-06 21:58:11,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:58:11,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-06 21:58:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:11,691 INFO L225 Difference]: With dead ends: 121 [2020-11-06 21:58:11,691 INFO L226 Difference]: Without dead ends: 57 [2020-11-06 21:58:11,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 21:58:11,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-06 21:58:11,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-06 21:58:11,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-06 21:58:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2020-11-06 21:58:11,744 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2020-11-06 21:58:11,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:11,745 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2020-11-06 21:58:11,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:58:11,745 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2020-11-06 21:58:11,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-06 21:58:11,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:11,747 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] [2020-11-06 21:58:11,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:58:11,748 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:11,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:11,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1727493878, now seen corresponding path program 1 times [2020-11-06 21:58:11,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:11,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138997967] [2020-11-06 21:58:11,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:58:11,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:58:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:58:11,890 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:58:11,952 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:58:11,952 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:58:11,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:58:11,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:58:11 BoogieIcfgContainer [2020-11-06 21:58:11,996 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:58:11,998 INFO L168 Benchmark]: Toolchain (without parser) took 2207.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 56.6 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.3 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:11,999 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:58:12,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.51 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 113.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:12,001 INFO L168 Benchmark]: Boogie Preprocessor took 75.23 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:12,002 INFO L168 Benchmark]: RCFGBuilder took 656.88 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 121.1 MB in the end (delta: -9.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:12,003 INFO L168 Benchmark]: TraceAbstraction took 1139.46 ms. Allocated memory is still 151.0 MB. Free memory was 120.6 MB in the beginning and 56.6 MB in the end (delta: 64.0 MB). Peak memory consumption was 64.0 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:12,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.51 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 113.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 75.23 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 656.88 ms. Allocated memory is still 151.0 MB. Free memory was 111.4 MB in the beginning and 121.1 MB in the end (delta: -9.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1139.46 ms. Allocated memory is still 151.0 MB. Free memory was 120.6 MB in the beginning and 56.6 MB in the end (delta: 64.0 MB). Peak memory consumption was 64.0 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 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967311, \old(Zero_fmod)=4294967299, \old(Zero_fmod)=4294967307, one_fmod=1, Zero_fmod={9:0}] [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=4294967308, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=4294967308, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967308, one_fmod=1, x=0, y=4294967308, Zero_fmod={9:0}] [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 VAL [\old(x)=0, \old(y)=4294967308, one_fmod=1, sx=-1, x=0, y=4294967308, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967308, hx=2139095040, hy=2139095041, one_fmod=1, sx=-1, x=0, y=4294967308, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967309, one_fmod=1, x=0, y=4294967308, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=4294967309, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967308, Zero_fmod={9:0}] [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] CALL reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "float_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 76 SDtfs, 16 SDslu, 60 SDs, 0 SdLazy, 79 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1330 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...