/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_0730b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:24:40,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:24:40,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:24:40,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:24:40,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:24:40,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:24:40,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:24:40,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:24:40,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:24:40,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:24:40,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:24:40,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:24:40,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:24:40,725 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:24:40,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:24:40,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:24:40,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:24:40,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:24:40,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:24:40,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:24:40,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:24:40,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:24:40,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:24:40,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:24:40,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:24:40,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:24:40,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:24:40,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:24:40,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:24:40,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:24:40,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:24:40,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:24:40,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:24:40,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:24:40,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:24:40,769 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:24:40,770 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:24:40,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:24:40,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:24:40,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:24:40,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:24:40,773 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 20:24:40,794 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:24:40,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:24:40,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:24:40,799 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:24:40,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:24:40,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:24:40,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:24:40,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:24:40,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:24:40,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:24:40,801 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:24:40,801 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:24:40,801 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:24:40,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:24:40,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:24:40,802 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:24:40,802 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:24:40,802 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:24:40,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:24:40,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:24:40,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:24:40,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:24:40,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:24:41,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:24:41,207 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:24:41,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:24:41,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:24:41,213 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:24:41,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-10-23 20:24:41,298 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972b8b052/c32b8354b56a49b593c66c0715ece559/FLAGdecacb78e [2020-10-23 20:24:41,868 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:24:41,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2020-10-23 20:24:41,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972b8b052/c32b8354b56a49b593c66c0715ece559/FLAGdecacb78e [2020-10-23 20:24:42,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/972b8b052/c32b8354b56a49b593c66c0715ece559 [2020-10-23 20:24:42,212 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:24:42,218 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:24:42,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:42,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:24:42,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:24:42,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:42" (1/1) ... [2020-10-23 20:24:42,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49e52d12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42, skipping insertion in model container [2020-10-23 20:24:42,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:42" (1/1) ... [2020-10-23 20:24:42,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:24:42,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:24:42,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:42,558 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:24:42,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:42,639 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:24:42,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42 WrapperNode [2020-10-23 20:24:42,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:42,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:24:42,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:24:42,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:24:42,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42" (1/1) ... [2020-10-23 20:24:42,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42" (1/1) ... [2020-10-23 20:24:42,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42" (1/1) ... [2020-10-23 20:24:42,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42" (1/1) ... [2020-10-23 20:24:42,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42" (1/1) ... [2020-10-23 20:24:42,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42" (1/1) ... [2020-10-23 20:24:42,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42" (1/1) ... [2020-10-23 20:24:42,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:24:42,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:24:42,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:24:42,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:24:42,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42" (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 20:24:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:24:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:24:42,837 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:24:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-23 20:24:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-23 20:24:42,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:24:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:24:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:24:42,838 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:24:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:24:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 20:24:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-23 20:24:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:24:42,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:24:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:24:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:24:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:24:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-23 20:24:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:24:42,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:24:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:24:42,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:24:43,580 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:24:43,580 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-23 20:24:43,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:43 BoogieIcfgContainer [2020-10-23 20:24:43,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:24:43,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:24:43,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:24:43,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:24:43,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:24:42" (1/3) ... [2020-10-23 20:24:43,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcd12a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:43, skipping insertion in model container [2020-10-23 20:24:43,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:42" (2/3) ... [2020-10-23 20:24:43,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bcd12a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:43, skipping insertion in model container [2020-10-23 20:24:43,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:43" (3/3) ... [2020-10-23 20:24:43,591 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2020-10-23 20:24:43,602 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:24:43,608 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:24:43,624 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:24:43,647 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:24:43,647 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:24:43,648 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:24:43,648 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:24:43,648 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:24:43,648 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:24:43,648 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:24:43,648 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:24:43,668 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states. [2020-10-23 20:24:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-23 20:24:43,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:43,681 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] [2020-10-23 20:24:43,681 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:43,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:43,688 INFO L82 PathProgramCache]: Analyzing trace with hash 499020979, now seen corresponding path program 1 times [2020-10-23 20:24:43,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:43,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749723964] [2020-10-23 20:24:43,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:43,767 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:43,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:43,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:24:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:24:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:44,045 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 20:24:44,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749723964] [2020-10-23 20:24:44,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:24:44,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:24:44,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427239033] [2020-10-23 20:24:44,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:24:44,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:24:44,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:24:44,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:24:44,072 INFO L87 Difference]: Start difference. First operand 175 states. Second operand 4 states. [2020-10-23 20:24:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:24:44,873 INFO L93 Difference]: Finished difference Result 317 states and 381 transitions. [2020-10-23 20:24:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:24:44,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-10-23 20:24:44,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:24:44,889 INFO L225 Difference]: With dead ends: 317 [2020-10-23 20:24:44,889 INFO L226 Difference]: Without dead ends: 165 [2020-10-23 20:24:44,894 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 20:24:44,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-23 20:24:44,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-10-23 20:24:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-23 20:24:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 185 transitions. [2020-10-23 20:24:44,964 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 185 transitions. Word has length 44 [2020-10-23 20:24:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:24:44,964 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 185 transitions. [2020-10-23 20:24:44,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:24:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 185 transitions. [2020-10-23 20:24:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-23 20:24:44,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:44,968 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] [2020-10-23 20:24:44,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:24:44,969 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:44,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:44,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1824286621, now seen corresponding path program 1 times [2020-10-23 20:24:44,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:44,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065678466] [2020-10-23 20:24:44,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:44,979 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:45,070 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:45,145 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:45,204 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:24:45,205 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:24:45,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:24:45,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:24:45 BoogieIcfgContainer [2020-10-23 20:24:45,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:24:45,237 INFO L168 Benchmark]: Toolchain (without parser) took 3018.33 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 133.2 MB in the beginning and 139.3 MB in the end (delta: -6.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:45,238 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 156.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:24:45,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.59 ms. Allocated memory is still 156.2 MB. Free memory was 132.6 MB in the beginning and 119.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:45,242 INFO L168 Benchmark]: Boogie Preprocessor took 103.15 ms. Allocated memory is still 156.2 MB. Free memory was 119.6 MB in the beginning and 117.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:45,243 INFO L168 Benchmark]: RCFGBuilder took 833.77 ms. Allocated memory is still 156.2 MB. Free memory was 117.4 MB in the beginning and 114.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:45,245 INFO L168 Benchmark]: TraceAbstraction took 1646.73 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 114.0 MB in the beginning and 139.3 MB in the end (delta: -25.2 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:45,256 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 156.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 418.59 ms. Allocated memory is still 156.2 MB. Free memory was 132.6 MB in the beginning and 119.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 103.15 ms. Allocated memory is still 156.2 MB. Free memory was 119.6 MB in the beginning and 117.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 833.77 ms. Allocated memory is still 156.2 MB. Free memory was 117.4 MB in the beginning and 114.0 MB in the end (delta: 3.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1646.73 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 114.0 MB in the beginning and 139.3 MB in the end (delta: -25.2 MB). Peak memory consumption was 6.7 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 someUnaryDOUBLEoperation at line 151, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = -0.0; [L152] CALL, EXPR __ieee754_sqrt(x) [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; [L152] RET, EXPR __ieee754_sqrt(x) [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L156] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0730b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 189 SDtfs, 37 SDslu, 144 SDs, 0 SdLazy, 196 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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=175occurred 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...