/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:24:38,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:24:38,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:24:38,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:24:38,507 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:24:38,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:24:38,510 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:24:38,512 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:24:38,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:24:38,516 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:24:38,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:24:38,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:24:38,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:24:38,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:24:38,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:24:38,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:24:38,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:24:38,527 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:24:38,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:24:38,532 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:24:38,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:24:38,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:24:38,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:24:38,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:24:38,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:24:38,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:24:38,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:24:38,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:24:38,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:24:38,607 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:24:38,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:24:38,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:24:38,613 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:24:38,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:24:38,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:24:38,614 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:24:38,614 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:24:38,614 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:24:38,614 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:24:38,616 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:24:38,616 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:24:38,616 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:24:38,616 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:24:38,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:24:38,617 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:24:38,617 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:24:38,617 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:24:38,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:24:38,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:24:38,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:24:38,618 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:24:38,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:24:39,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:24:39,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:24:39,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:24:39,111 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:24:39,112 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:24:39,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-10-23 20:24:39,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d8035d52/657e1df6540149c7be6783981ec0991d/FLAGc5786c9e5 [2020-10-23 20:24:39,970 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:24:39,971 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-10-23 20:24:39,983 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d8035d52/657e1df6540149c7be6783981ec0991d/FLAGc5786c9e5 [2020-10-23 20:24:40,290 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d8035d52/657e1df6540149c7be6783981ec0991d [2020-10-23 20:24:40,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:24:40,304 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:24:40,308 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:40,308 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:24:40,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:24:40,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:40" (1/1) ... [2020-10-23 20:24:40,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393ed529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40, skipping insertion in model container [2020-10-23 20:24:40,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:40" (1/1) ... [2020-10-23 20:24:40,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:24:40,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:24:40,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:40,588 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:24:40,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:40,656 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:24:40,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40 WrapperNode [2020-10-23 20:24:40,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:40,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:24:40,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:24:40,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:24:40,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40" (1/1) ... [2020-10-23 20:24:40,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40" (1/1) ... [2020-10-23 20:24:40,683 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40" (1/1) ... [2020-10-23 20:24:40,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40" (1/1) ... [2020-10-23 20:24:40,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40" (1/1) ... [2020-10-23 20:24:40,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40" (1/1) ... [2020-10-23 20:24:40,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40" (1/1) ... [2020-10-23 20:24:40,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:24:40,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:24:40,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:24:40,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:24:40,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40" (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 20:24:40,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:24:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:24:40,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:24:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 20:24:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-23 20:24:40,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:24:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:24:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:24:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:24:40,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:24:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 20:24:40,833 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 20:24:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-23 20:24:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:24:40,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:24:40,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:24:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:24:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:24:40,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:24:40,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:24:40,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:24:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:24:41,782 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:24:41,782 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-23 20:24:41,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:41 BoogieIcfgContainer [2020-10-23 20:24:41,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:24:41,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:24:41,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:24:41,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:24:41,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:24:40" (1/3) ... [2020-10-23 20:24:41,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f55b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:41, skipping insertion in model container [2020-10-23 20:24:41,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:40" (2/3) ... [2020-10-23 20:24:41,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f55b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:41, skipping insertion in model container [2020-10-23 20:24:41,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:41" (3/3) ... [2020-10-23 20:24:41,794 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2020-10-23 20:24:41,807 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:24:41,813 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:24:41,828 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:24:41,855 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:24:41,855 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:24:41,856 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:24:41,856 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:24:41,856 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:24:41,856 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:24:41,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:24:41,856 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:24:41,877 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-23 20:24:41,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-23 20:24:41,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:41,891 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] [2020-10-23 20:24:41,891 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:41,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:41,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1876466260, now seen corresponding path program 1 times [2020-10-23 20:24:41,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:41,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [391139312] [2020-10-23 20:24:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:41,984 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:42,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:24:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:42,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:24:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:42,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-23 20:24:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:42,254 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 20:24:42,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [391139312] [2020-10-23 20:24:42,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:24:42,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:24:42,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615949904] [2020-10-23 20:24:42,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:24:42,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:24:42,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:24:42,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:24:42,283 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 4 states. [2020-10-23 20:24:43,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:24:43,019 INFO L93 Difference]: Finished difference Result 285 states and 342 transitions. [2020-10-23 20:24:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:24:43,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-23 20:24:43,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:24:43,040 INFO L225 Difference]: With dead ends: 285 [2020-10-23 20:24:43,040 INFO L226 Difference]: Without dead ends: 150 [2020-10-23 20:24:43,045 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 20:24:43,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-23 20:24:43,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-10-23 20:24:43,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-23 20:24:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 169 transitions. [2020-10-23 20:24:43,112 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 169 transitions. Word has length 47 [2020-10-23 20:24:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:24:43,112 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 169 transitions. [2020-10-23 20:24:43,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:24:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 169 transitions. [2020-10-23 20:24:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-23 20:24:43,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:43,116 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, 1, 1, 1, 1, 1, 1] [2020-10-23 20:24:43,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:24:43,117 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:43,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:43,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1382555682, now seen corresponding path program 1 times [2020-10-23 20:24:43,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:43,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037412881] [2020-10-23 20:24:43,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:43,122 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:43,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:43,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:43,298 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:24:43,298 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:24:43,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:24:43,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:24:43 BoogieIcfgContainer [2020-10-23 20:24:43,329 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:24:43,333 INFO L168 Benchmark]: Toolchain (without parser) took 3032.69 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 62.2 MB in the end (delta: 65.1 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:43,336 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 101.1 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:24:43,340 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 114.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:43,341 INFO L168 Benchmark]: Boogie Preprocessor took 55.85 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:43,342 INFO L168 Benchmark]: RCFGBuilder took 1070.26 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 108.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:43,345 INFO L168 Benchmark]: TraceAbstraction took 1542.96 ms. Allocated memory is still 151.0 MB. Free memory was 108.4 MB in the beginning and 62.2 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:43,355 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 125.8 MB. Free memory was 101.1 MB in the beginning and 101.1 MB in the end (delta: 68.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 349.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 114.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.85 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 112.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1070.26 ms. Allocated memory is still 151.0 MB. Free memory was 112.0 MB in the beginning and 108.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1542.96 ms. Allocated memory is still 151.0 MB. Free memory was 108.4 MB in the beginning and 62.2 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.5 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 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L141] double x = 0.0 / 0.0; [L143] CALL, EXPR __ieee754_sqrt(x) [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; [L143] RET, EXPR __ieee754_sqrt(x) [L143] double res = __ieee754_sqrt(x); [L146] CALL, EXPR isnan_double(res) [L20] return x != x; [L146] RET, EXPR isnan_double(res) [L146] COND TRUE !isnan_double(res) [L147] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0720.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 159 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 173 SDtfs, 39 SDslu, 129 SDs, 0 SdLazy, 174 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=159occurred 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: No data available, 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...