/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/double_req_bl_1032a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:06,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:06,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:06,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:06,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:06,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:06,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:06,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:06,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:06,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:06,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:06,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:06,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:06,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:06,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:06,226 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:06,227 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:06,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:06,239 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:06,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:06,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:06,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:06,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:06,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:06,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:06,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:06,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:06,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:06,284 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 17:55:06,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:06,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:06,343 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:06,343 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:06,343 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:06,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:06,344 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:06,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:06,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:06,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:06,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:06,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:06,346 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:06,346 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:06,346 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:06,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:06,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:06,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:06,347 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:06,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:06,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:06,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:06,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:06,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:06,348 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:06,348 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:06,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:06,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:06,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:06,349 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:06,777 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:06,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:06,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:06,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:06,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:06,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-10-23 17:55:06,878 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d1b623f/16bbe774d79c4c5dae7d60622b49d724/FLAGdf83c955a [2020-10-23 17:55:07,533 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:07,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-10-23 17:55:07,544 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d1b623f/16bbe774d79c4c5dae7d60622b49d724/FLAGdf83c955a [2020-10-23 17:55:07,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8d1b623f/16bbe774d79c4c5dae7d60622b49d724 [2020-10-23 17:55:07,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:07,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:07,920 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:07,920 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:07,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:07,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:07" (1/1) ... [2020-10-23 17:55:07,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bb188e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:07, skipping insertion in model container [2020-10-23 17:55:07,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:07" (1/1) ... [2020-10-23 17:55:07,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:07,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:08,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:08,159 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:08,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:08,214 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:08,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08 WrapperNode [2020-10-23 17:55:08,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:08,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:08,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:08,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:08,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (1/1) ... [2020-10-23 17:55:08,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:08,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:08,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:08,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:08,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (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 17:55:08,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 17:55:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-10-23 17:55:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-23 17:55:08,371 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 17:55:08,372 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-10-23 17:55:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:08,373 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-23 17:55:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:08,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:08,925 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:08,925 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 17:55:08,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:08 BoogieIcfgContainer [2020-10-23 17:55:08,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:08,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:08,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:08,932 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:08,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:07" (1/3) ... [2020-10-23 17:55:08,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67232ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:08, skipping insertion in model container [2020-10-23 17:55:08,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:08" (2/3) ... [2020-10-23 17:55:08,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67232ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:08, skipping insertion in model container [2020-10-23 17:55:08,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:08" (3/3) ... [2020-10-23 17:55:08,936 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a.c [2020-10-23 17:55:08,948 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:08,953 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:08,968 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:08,996 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:08,996 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:08,996 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:08,997 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:08,997 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:08,997 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:08,997 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:08,997 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-10-23 17:55:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-23 17:55:09,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:09,035 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] [2020-10-23 17:55:09,036 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:09,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:09,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1319604067, now seen corresponding path program 1 times [2020-10-23 17:55:09,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:09,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740058043] [2020-10-23 17:55:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:09,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:09,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:09,457 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 17:55:09,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740058043] [2020-10-23 17:55:09,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:09,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:09,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506887414] [2020-10-23 17:55:09,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:09,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:09,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:09,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:09,488 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-10-23 17:55:09,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:09,746 INFO L93 Difference]: Finished difference Result 83 states and 115 transitions. [2020-10-23 17:55:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:09,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-23 17:55:09,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:09,761 INFO L225 Difference]: With dead ends: 83 [2020-10-23 17:55:09,761 INFO L226 Difference]: Without dead ends: 40 [2020-10-23 17:55:09,769 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 [2020-10-23 17:55:09,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-23 17:55:09,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-23 17:55:09,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-23 17:55:09,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-23 17:55:09,841 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 20 [2020-10-23 17:55:09,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:09,842 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-23 17:55:09,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:09,843 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-23 17:55:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 17:55:09,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:09,846 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] [2020-10-23 17:55:09,847 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:09,847 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:09,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:09,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1838433378, now seen corresponding path program 1 times [2020-10-23 17:55:09,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:09,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708802525] [2020-10-23 17:55:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:09,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:09,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:10,003 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:10,003 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:10,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:10,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:10 BoogieIcfgContainer [2020-10-23 17:55:10,048 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:10,054 INFO L168 Benchmark]: Toolchain (without parser) took 2140.77 ms. Allocated memory is still 151.0 MB. Free memory was 125.2 MB in the beginning and 77.6 MB in the end (delta: 47.6 MB). Peak memory consumption was 48.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,054 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:10,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.34 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 113.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,057 INFO L168 Benchmark]: Boogie Preprocessor took 91.57 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,058 INFO L168 Benchmark]: RCFGBuilder took 619.09 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 127.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,059 INFO L168 Benchmark]: TraceAbstraction took 1119.90 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 77.6 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:10,062 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 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.34 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 113.8 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 91.57 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 619.09 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 127.4 MB in the end (delta: -15.5 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1119.90 ms. Allocated memory is still 151.0 MB. Free memory was 126.9 MB in the beginning and 77.6 MB in the end (delta: 49.3 MB). Peak memory consumption was 49.3 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 someBinaryDOUBLEComparisonOperation at line 92, overapproximation of shiftRight at line 36, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L88] double x = 0.0; VAL [x=0] [L89] CALL, EXPR round_double(x) VAL [\old(x)=0] [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; VAL [\old(x)=0, x=0] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=0, x=0] [L29] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=0, x=0] [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=0, exponent_less_1023=0, lsw=0, msw=0, x=0] [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; VAL [\old(x)=0, \result=0, exponent_less_1023=0, lsw=0, msw=0, x=0] [L89] RET, EXPR round_double(x) VAL [round_double(x)=0, x=0] [L89] double res = round_double(x); [L92] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L92] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L93] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1032a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 8 SDslu, 42 SDs, 0 SdLazy, 47 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=47occurred 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, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1159 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...