/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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:56:06,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:56:06,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:56:06,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:56:06,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:56:06,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:56:06,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:56:06,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:56:06,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:56:06,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:56:06,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:56:06,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:56:06,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:56:06,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:56:06,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:56:06,083 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:56:06,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:56:06,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:56:06,088 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:56:06,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:56:06,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:56:06,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:56:06,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:56:06,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:56:06,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:56:06,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:56:06,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:56:06,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:56:06,131 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 [2020-10-23 17:56:06,159 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:56:06,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:56:06,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:56:06,161 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:56:06,162 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:56:06,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:56:06,162 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:56:06,162 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:56:06,162 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:56:06,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:56:06,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:56:06,163 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:56:06,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:56:06,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:56:06,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:56:06,164 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:56:06,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:56:06,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:56:06,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:56:06,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:56:06,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:56:06,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:06,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:56:06,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:56:06,166 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:56:06,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:56:06,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:56:06,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:56:06,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:56:06,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:56:06,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:56:06,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:56:06,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:56:06,599 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:56:06,600 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:56:06,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-10-23 17:56:06,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/067d57de6/a7b80210d17c44c8894ddae7090d6996/FLAG9e9da685e [2020-10-23 17:56:07,348 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:56:07,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2020-10-23 17:56:07,363 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/067d57de6/a7b80210d17c44c8894ddae7090d6996/FLAG9e9da685e [2020-10-23 17:56:07,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/067d57de6/a7b80210d17c44c8894ddae7090d6996 [2020-10-23 17:56:07,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:56:07,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:56:07,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:07,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:56:07,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:56:07,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:07" (1/1) ... [2020-10-23 17:56:07,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d6dcc0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:07, skipping insertion in model container [2020-10-23 17:56:07,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:07" (1/1) ... [2020-10-23 17:56:07,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:56:07,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:56:08,025 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:08,035 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:56:08,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:08,086 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:56:08,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08 WrapperNode [2020-10-23 17:56:08,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:08,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:56:08,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:56:08,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:56:08,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08" (1/1) ... [2020-10-23 17:56:08,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08" (1/1) ... [2020-10-23 17:56:08,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08" (1/1) ... [2020-10-23 17:56:08,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08" (1/1) ... [2020-10-23 17:56:08,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08" (1/1) ... [2020-10-23 17:56:08,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08" (1/1) ... [2020-10-23 17:56:08,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08" (1/1) ... [2020-10-23 17:56:08,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:56:08,146 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:56:08,146 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:56:08,146 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:56:08,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08" (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 [2020-10-23 17:56:08,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:56:08,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:56:08,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:56:08,237 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2020-10-23 17:56:08,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-10-23 17:56:08,237 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:56:08,238 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:56:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:56:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:56:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:56:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2020-10-23 17:56:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:56:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:56:08,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:56:08,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:56:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:56:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-10-23 17:56:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:56:08,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:56:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:56:08,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:08,799 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:08,799 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-23 17:56:08,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:08 BoogieIcfgContainer [2020-10-23 17:56:08,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:08,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:08,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:08,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:08,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:07" (1/3) ... [2020-10-23 17:56:08,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17bc7d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:08, skipping insertion in model container [2020-10-23 17:56:08,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:08" (2/3) ... [2020-10-23 17:56:08,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17bc7d31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:08, skipping insertion in model container [2020-10-23 17:56:08,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:08" (3/3) ... [2020-10-23 17:56:08,810 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-10-23 17:56:08,823 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:08,828 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:08,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:08,877 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:08,877 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:08,877 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:08,877 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:08,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:08,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:08,878 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:08,878 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-23 17:56:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 17:56:08,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:08,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:56:08,905 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:08,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:08,912 INFO L82 PathProgramCache]: Analyzing trace with hash 189783232, now seen corresponding path program 1 times [2020-10-23 17:56:08,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:08,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046440779] [2020-10-23 17:56:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:09,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:09,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:09,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:09,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-23 17:56:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:09,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:09,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046440779] [2020-10-23 17:56:09,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:09,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:56:09,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920566210] [2020-10-23 17:56:09,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:56:09,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:09,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:56:09,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:56:09,300 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 4 states. [2020-10-23 17:56:09,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:09,683 INFO L93 Difference]: Finished difference Result 93 states and 132 transitions. [2020-10-23 17:56:09,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:56:09,686 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-23 17:56:09,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:09,695 INFO L225 Difference]: With dead ends: 93 [2020-10-23 17:56:09,696 INFO L226 Difference]: Without dead ends: 45 [2020-10-23 17:56:09,699 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 [2020-10-23 17:56:09,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-23 17:56:09,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-23 17:56:09,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-23 17:56:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-23 17:56:09,756 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 26 [2020-10-23 17:56:09,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:09,756 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-23 17:56:09,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:56:09,756 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-23 17:56:09,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 17:56:09,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:09,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:56:09,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:56:09,759 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:09,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:09,760 INFO L82 PathProgramCache]: Analyzing trace with hash 273334945, now seen corresponding path program 1 times [2020-10-23 17:56:09,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:09,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586753133] [2020-10-23 17:56:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:09,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:09,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:10,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-23 17:56:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:10,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586753133] [2020-10-23 17:56:10,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:10,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 17:56:10,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527693149] [2020-10-23 17:56:10,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 17:56:10,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:10,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 17:56:10,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:56:10,019 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 5 states. [2020-10-23 17:56:10,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:10,325 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-10-23 17:56:10,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 17:56:10,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-23 17:56:10,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:10,328 INFO L225 Difference]: With dead ends: 49 [2020-10-23 17:56:10,328 INFO L226 Difference]: Without dead ends: 45 [2020-10-23 17:56:10,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 17:56:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-23 17:56:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-23 17:56:10,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-23 17:56:10,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-10-23 17:56:10,341 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 28 [2020-10-23 17:56:10,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:10,342 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-10-23 17:56:10,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 17:56:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-10-23 17:56:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 17:56:10,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:10,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:56:10,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:56:10,345 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:10,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:10,346 INFO L82 PathProgramCache]: Analyzing trace with hash 47286369, now seen corresponding path program 1 times [2020-10-23 17:56:10,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:10,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940297282] [2020-10-23 17:56:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:10,423 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:10,505 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:10,549 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:56:10,550 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:56:10,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 17:56:10,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:10 BoogieIcfgContainer [2020-10-23 17:56:10,594 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:56:10,597 INFO L168 Benchmark]: Toolchain (without parser) took 2895.72 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 74.2 MB in the end (delta: 51.9 MB). Peak memory consumption was 52.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:10,598 INFO L168 Benchmark]: CDTParser took 1.36 ms. Allocated memory is still 125.8 MB. Free memory is still 100.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:56:10,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 114.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:10,600 INFO L168 Benchmark]: Boogie Preprocessor took 56.25 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 112.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:10,601 INFO L168 Benchmark]: RCFGBuilder took 655.47 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 122.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:10,602 INFO L168 Benchmark]: TraceAbstraction took 1791.35 ms. Allocated memory is still 151.0 MB. Free memory was 121.8 MB in the beginning and 74.2 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:10,605 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.36 ms. Allocated memory is still 125.8 MB. Free memory is still 100.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 375.39 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 114.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.25 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 112.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 655.47 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 122.3 MB in the end (delta: -9.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1791.35 ms. Allocated memory is still 151.0 MB. Free memory was 121.8 MB in the beginning and 74.2 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.6 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 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; VAL [\old(one_modf)=54, one_modf=1] [L82] float x = 0.0f / 0.0f; [L83] float iptr; VAL [iptr={8:0}, one_modf=1] [L84] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=51, iptr={8:0}, one_modf=1] [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [\old(x)=51, iptr={8:0}, iptr={8:0}, one_modf=1, x=51] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=51, i0=0, iptr={8:0}, iptr={8:0}, one_modf=1, x=51] [L24] COND TRUE j0 < 23 VAL [\old(x)=51, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, x=51] [L25] COND TRUE j0 < 0 VAL [\old(x)=51, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, x=51] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [\old(x)=51, \result=51, i0=0, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, x=51] [L84] RET, EXPR modf_float(x, &iptr) VAL [iptr={8:0}, modf_float(x, &iptr)=51, one_modf=1, x=51] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) VAL [\read(iptr)=60, iptr={8:0}, one_modf=1, res=51, x=51] [L87] CALL, EXPR isnan_float(iptr) VAL [\old(x)=60, one_modf=1] [L75] return x != x; VAL [\old(x)=60, \result=1, one_modf=1, x=60] [L87] RET, EXPR isnan_float(iptr) VAL [\read(iptr)=60, iptr={8:0}, isnan_float(iptr)=1, one_modf=1, res=51, x=51] [L87] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=60, iptr={8:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, one_modf=1, res=51, x=51] [L87] CALL, EXPR isnan_float(res) VAL [\old(x)=51, one_modf=1] [L75] return x != x; VAL [\old(x)=51, \result=0, one_modf=1, x=51] [L87] RET, EXPR isnan_float(res) VAL [\read(iptr)=60, iptr={8:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=51, x=51] [L87] isnan_float(iptr) && !isnan_float(res) VAL [\read(iptr)=60, iptr={8:0}, isnan_float(iptr)=1, isnan_float(iptr) && !isnan_float(res)=1, isnan_float(res)=0, one_modf=1, res=51, x=51] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L88] CALL reach_error() VAL [one_modf=1] [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 96 SDtfs, 16 SDslu, 96 SDs, 0 SdLazy, 122 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 3721 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...