/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:47:20,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:47:20,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:47:20,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:47:20,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:47:20,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:47:20,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:47:20,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:47:20,566 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:47:20,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:47:20,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:47:20,574 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:47:20,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:47:20,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:47:20,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:47:20,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:47:20,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:47:20,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:47:20,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:47:20,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:47:20,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:47:20,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:47:20,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:47:20,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:47:20,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:47:20,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:47:20,639 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:47:20,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:47:20,641 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 04:47:20,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:47:20,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:47:20,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:47:20,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:47:20,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:47:20,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:47:20,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:47:20,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:47:20,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:47:20,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:47:20,670 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:47:20,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:47:20,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:47:20,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:47:20,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:47:20,672 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:47:20,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:47:20,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:47:20,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:47:20,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:47:20,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:47:20,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:47:20,673 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:47:21,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:47:21,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:47:21,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:47:21,106 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:47:21,106 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:47:21,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-11-07 04:47:21,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55b9ea9b/d603b3815905400f9a3cbb82862b4d94/FLAGf9b5d5a53 [2020-11-07 04:47:21,879 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:47:21,879 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1250.c [2020-11-07 04:47:21,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55b9ea9b/d603b3815905400f9a3cbb82862b4d94/FLAGf9b5d5a53 [2020-11-07 04:47:22,214 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c55b9ea9b/d603b3815905400f9a3cbb82862b4d94 [2020-11-07 04:47:22,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:47:22,224 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:47:22,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:22,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:47:22,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:47:22,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:22" (1/1) ... [2020-11-07 04:47:22,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@442e1a9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22, skipping insertion in model container [2020-11-07 04:47:22,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:47:22" (1/1) ... [2020-11-07 04:47:22,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:47:22,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:47:22,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:22,511 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:47:22,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:47:22,588 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:47:22,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22 WrapperNode [2020-11-07 04:47:22,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:47:22,591 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:47:22,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:47:22,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:47:22,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22" (1/1) ... [2020-11-07 04:47:22,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22" (1/1) ... [2020-11-07 04:47:22,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22" (1/1) ... [2020-11-07 04:47:22,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22" (1/1) ... [2020-11-07 04:47:22,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22" (1/1) ... [2020-11-07 04:47:22,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22" (1/1) ... [2020-11-07 04:47:22,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22" (1/1) ... [2020-11-07 04:47:22,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:47:22,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:47:22,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:47:22,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:47:22,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22" (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 [2020-11-07 04:47:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:47:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:47:22,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:47:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-11-07 04:47:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-11-07 04:47:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-11-07 04:47:22,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:47:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:47:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:47:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:47:22,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:47:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-11-07 04:47:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:47:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:47:22,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:47:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-11-07 04:47:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-11-07 04:47:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:47:22,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:47:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:47:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:47:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:47:22,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:47:23,391 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:47:23,392 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-07 04:47:23,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:23 BoogieIcfgContainer [2020-11-07 04:47:23,394 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:47:23,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:47:23,397 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:47:23,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:47:23,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:47:22" (1/3) ... [2020-11-07 04:47:23,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ad3ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:23, skipping insertion in model container [2020-11-07 04:47:23,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:47:22" (2/3) ... [2020-11-07 04:47:23,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65ad3ed5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:47:23, skipping insertion in model container [2020-11-07 04:47:23,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:47:23" (3/3) ... [2020-11-07 04:47:23,404 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-11-07 04:47:23,419 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:47:23,423 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:47:23,438 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:47:23,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:47:23,477 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:47:23,477 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:47:23,477 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:47:23,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:47:23,478 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:47:23,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:47:23,479 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:47:23,504 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2020-11-07 04:47:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-07 04:47:23,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:23,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:47:23,517 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:23,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:23,524 INFO L82 PathProgramCache]: Analyzing trace with hash 522065377, now seen corresponding path program 1 times [2020-11-07 04:47:23,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:23,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24288064] [2020-11-07 04:47:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:23,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:23,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 04:47:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:23,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 04:47:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:23,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-07 04:47:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:47:24,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24288064] [2020-11-07 04:47:24,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:24,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 04:47:24,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802276992] [2020-11-07 04:47:24,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 04:47:24,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:24,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 04:47:24,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 04:47:24,074 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 4 states. [2020-11-07 04:47:24,223 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-11-07 04:47:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:24,630 INFO L93 Difference]: Finished difference Result 141 states and 163 transitions. [2020-11-07 04:47:24,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 04:47:24,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-11-07 04:47:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:24,643 INFO L225 Difference]: With dead ends: 141 [2020-11-07 04:47:24,644 INFO L226 Difference]: Without dead ends: 72 [2020-11-07 04:47:24,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 04:47:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-07 04:47:24,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-11-07 04:47:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-07 04:47:24,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 79 transitions. [2020-11-07 04:47:24,709 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 79 transitions. Word has length 43 [2020-11-07 04:47:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:24,709 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 79 transitions. [2020-11-07 04:47:24,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 04:47:24,710 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 79 transitions. [2020-11-07 04:47:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-11-07 04:47:24,713 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:24,713 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 04:47:24,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:47:24,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:24,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:24,715 INFO L82 PathProgramCache]: Analyzing trace with hash 53290032, now seen corresponding path program 1 times [2020-11-07 04:47:24,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:24,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957735218] [2020-11-07 04:47:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:24,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:24,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 04:47:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:24,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 04:47:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:24,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-11-07 04:47:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:47:25,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957735218] [2020-11-07 04:47:25,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:25,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 04:47:25,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290698165] [2020-11-07 04:47:25,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 04:47:25,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:25,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 04:47:25,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 04:47:25,008 INFO L87 Difference]: Start difference. First operand 72 states and 79 transitions. Second operand 6 states. [2020-11-07 04:47:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:25,416 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-11-07 04:47:25,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 04:47:25,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2020-11-07 04:47:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:25,421 INFO L225 Difference]: With dead ends: 94 [2020-11-07 04:47:25,422 INFO L226 Difference]: Without dead ends: 77 [2020-11-07 04:47:25,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 04:47:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-11-07 04:47:25,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2020-11-07 04:47:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-07 04:47:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-11-07 04:47:25,447 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 52 [2020-11-07 04:47:25,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:25,447 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-11-07 04:47:25,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 04:47:25,448 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-11-07 04:47:25,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-07 04:47:25,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:25,451 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, 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] [2020-11-07 04:47:25,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:47:25,452 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:25,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:25,455 INFO L82 PathProgramCache]: Analyzing trace with hash -827817724, now seen corresponding path program 1 times [2020-11-07 04:47:25,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:25,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234070080] [2020-11-07 04:47:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:25,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:47:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:25,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 04:47:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 04:47:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 04:47:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:47:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:47:25,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234070080] [2020-11-07 04:47:25,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:47:25,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 04:47:25,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012722604] [2020-11-07 04:47:25,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 04:47:25,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:47:25,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 04:47:25,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 04:47:25,691 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand 6 states. [2020-11-07 04:47:26,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:47:26,003 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2020-11-07 04:47:26,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 04:47:26,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2020-11-07 04:47:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:47:26,006 INFO L225 Difference]: With dead ends: 98 [2020-11-07 04:47:26,006 INFO L226 Difference]: Without dead ends: 81 [2020-11-07 04:47:26,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-07 04:47:26,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-07 04:47:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2020-11-07 04:47:26,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-07 04:47:26,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2020-11-07 04:47:26,025 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 55 [2020-11-07 04:47:26,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:47:26,025 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2020-11-07 04:47:26,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 04:47:26,026 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2020-11-07 04:47:26,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-07 04:47:26,027 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:47:26,027 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, 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] [2020-11-07 04:47:26,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 04:47:26,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:47:26,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:47:26,029 INFO L82 PathProgramCache]: Analyzing trace with hash -186261180, now seen corresponding path program 1 times [2020-11-07 04:47:26,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:47:26,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558433741] [2020-11-07 04:47:26,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:47:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:26,062 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:47:26,117 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:47:26,171 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:47:26,172 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:47:26,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 04:47:26,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:47:26 BoogieIcfgContainer [2020-11-07 04:47:26,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:47:26,257 INFO L168 Benchmark]: Toolchain (without parser) took 4036.24 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 126.7 MB in the beginning and 73.9 MB in the end (delta: 52.8 MB). Peak memory consumption was 90.0 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:26,259 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:47:26,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.67 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:26,262 INFO L168 Benchmark]: Boogie Preprocessor took 49.17 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:26,266 INFO L168 Benchmark]: RCFGBuilder took 752.72 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 130.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:26,267 INFO L168 Benchmark]: TraceAbstraction took 2857.54 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 130.1 MB in the beginning and 73.9 MB in the end (delta: 56.2 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. [2020-11-07 04:47:26,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 362.67 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.17 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 752.72 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 130.1 MB in the end (delta: -15.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2857.54 ms. Allocated memory was 151.0 MB in the beginning and 186.6 MB in the end (delta: 35.7 MB). Free memory was 130.1 MB in the beginning and 73.9 MB in the end (delta: 56.2 MB). Peak memory consumption was 92.3 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 someBinaryFLOATComparisonOperation at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 63. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L64] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578696, \old(y)=4286578699] [L45] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696] [L22] __uint32_t w; VAL [\old(x)=4286578696, x=4286578696] [L25] ieee_float_shape_type gf_u; VAL [\old(x)=4286578696, gf_u={3:0}, x=4286578696] [L26] gf_u.value = (x) VAL [\old(x)=4286578696, gf_u={3:0}, x=4286578696] [L27] EXPR gf_u.word VAL [\old(x)=4286578696, gf_u={3:0}, gf_u.word=4286578689, x=4286578696] [L27] (w) = gf_u.word VAL [\old(x)=4286578696, gf_u={3:0}, gf_u.word=4286578689, w=4286578689, x=4286578696] [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578696, w=4286578689, x=4286578696] [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578696, w=4286578689, x=4286578696] [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578696, w=4286578689, x=4286578696] [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) VAL [\old(x)=4286578696, w=4286578689, x=4286578696] [L41] return 0; VAL [\old(x)=4286578696, \result=0, w=4286578689, x=4286578696] [L45] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696, \old(y)=4286578699, __fpclassify_float(x)=0, x=4286578696, y=4286578699] [L45] COND TRUE __fpclassify_float(x) == 0 VAL [\old(x)=4286578696, \old(y)=4286578699, __fpclassify_float(x)=0, x=4286578696, y=4286578699] [L46] return y; VAL [\old(x)=4286578696, \old(y)=4286578699, \result=4286578699, x=4286578696, y=4286578699] [L64] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=4286578699, x=4286578696, y=4286578699] [L64] float res = fmax_float(x, y); VAL [fmax_float(x, y)=4286578699, res=4286578699, x=4286578696, y=4286578699] [L66] CALL, EXPR isnan_float(res) VAL [\old(x)=4286578699] [L56] return x != x; VAL [\old(x)=4286578699, \result=0, x=4286578699] [L66] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=4286578699, x=4286578696, y=4286578699] [L66] COND TRUE !isnan_float(res) VAL [isnan_float(res)=0, res=4286578699, x=4286578696, y=4286578699] [L67] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 65 SDslu, 404 SDs, 0 SdLazy, 319 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 3 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 205 NumberOfCodeBlocks, 205 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 16059 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...