/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 0.2.0-7d8eed3 [2020-11-07 00:23:54,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:23:54,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:23:54,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:23:54,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:23:54,807 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:23:54,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:23:54,813 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:23:54,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:23:54,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:23:54,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:23:54,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:23:54,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:23:54,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:23:54,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:23:54,824 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:23:54,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:23:54,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:23:54,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:23:54,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:23:54,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:23:54,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:23:54,846 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:23:54,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:23:54,854 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 00:23:54,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 00:23:54,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 00:23:54,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 00:23:54,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 00:23:54,863 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 00:23:54,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 00:23:54,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 00:23:54,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 00:23:54,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 00:23:54,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 00:23:54,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 00:23:54,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 00:23:54,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 00:23:54,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:23:54,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:23:54,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:23:54,875 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 00:23:54,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:23:54,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:23:54,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:23:54,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:23:54,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:23:54,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:23:54,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:23:54,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:23:54,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:23:54,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:23:54,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:23:54,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:23:54,906 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:23:54,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:23:54,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:23:54,907 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:23:54,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:23:54,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:23:54,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:23:54,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:23:54,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:23:54,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:23:54,908 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:23:55,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:23:55,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:23:55,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:23:55,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:23:55,368 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:23:55,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-11-07 00:23:55,471 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b459403/03d9c4c6669545fda57ef7b9672cccf3/FLAGdf5cbba88 [2020-11-07 00:23:56,015 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:23:56,016 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2020-11-07 00:23:56,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b459403/03d9c4c6669545fda57ef7b9672cccf3/FLAGdf5cbba88 [2020-11-07 00:23:56,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b459403/03d9c4c6669545fda57ef7b9672cccf3 [2020-11-07 00:23:56,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:23:56,382 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:23:56,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:23:56,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:23:56,393 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:23:56,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb6c4b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56, skipping insertion in model container [2020-11-07 00:23:56,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:23:56,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:23:56,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:23:56,658 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:23:56,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:23:56,723 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:23:56,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56 WrapperNode [2020-11-07 00:23:56,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:23:56,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:23:56,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:23:56,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:23:56,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,780 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:23:56,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:23:56,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:23:56,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:23:56,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56" (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 00:23:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:23:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:23:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:23:56,898 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-07 00:23:56,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-11-07 00:23:56,899 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:23:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:23:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:23:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:23:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:23:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-07 00:23:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-07 00:23:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-11-07 00:23:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:23:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:23:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:23:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:23:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:23:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:23:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:23:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:23:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:23:57,877 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:23:57,877 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-07 00:23:57,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:23:57 BoogieIcfgContainer [2020-11-07 00:23:57,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:23:57,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:23:57,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:23:57,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:23:57,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:23:56" (1/3) ... [2020-11-07 00:23:57,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2004bd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:23:57, skipping insertion in model container [2020-11-07 00:23:57,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56" (2/3) ... [2020-11-07 00:23:57,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2004bd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:23:57, skipping insertion in model container [2020-11-07 00:23:57,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:23:57" (3/3) ... [2020-11-07 00:23:57,892 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2020-11-07 00:23:57,913 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:23:57,919 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:23:57,935 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:23:57,966 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:23:57,966 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:23:57,967 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:23:57,967 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:23:57,967 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:23:57,968 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:23:57,968 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:23:57,968 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:23:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-11-07 00:23:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-07 00:23:58,019 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:23:58,020 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] [2020-11-07 00:23:58,021 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:23:58,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:23:58,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1876466260, now seen corresponding path program 1 times [2020-11-07 00:23:58,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:23:58,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910865635] [2020-11-07 00:23:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:23:58,190 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:23:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:23:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:23:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:23:58,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 00:23:58,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:23:58,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-07 00:23:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:23:58,588 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 00:23:58,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910865635] [2020-11-07 00:23:58,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:23:58,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:23:58,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232891324] [2020-11-07 00:23:58,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:23:58,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:23:58,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:23:58,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:23:58,626 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 4 states. [2020-11-07 00:23:59,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:23:59,366 INFO L93 Difference]: Finished difference Result 285 states and 342 transitions. [2020-11-07 00:23:59,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:23:59,368 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-11-07 00:23:59,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:23:59,382 INFO L225 Difference]: With dead ends: 285 [2020-11-07 00:23:59,382 INFO L226 Difference]: Without dead ends: 150 [2020-11-07 00:23:59,387 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 [2020-11-07 00:23:59,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-07 00:23:59,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2020-11-07 00:23:59,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-11-07 00:23:59,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 169 transitions. [2020-11-07 00:23:59,457 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 169 transitions. Word has length 47 [2020-11-07 00:23:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:23:59,458 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 169 transitions. [2020-11-07 00:23:59,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:23:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 169 transitions. [2020-11-07 00:23:59,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-07 00:23:59,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:23:59,462 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] [2020-11-07 00:23:59,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:23:59,462 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:23:59,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:23:59,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1382555682, now seen corresponding path program 1 times [2020-11-07 00:23:59,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:23:59,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828698669] [2020-11-07 00:23:59,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:23:59,468 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:23:59,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:23:59,550 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:23:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:23:59,615 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:23:59,674 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:23:59,675 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:23:59,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:23:59,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:23:59 BoogieIcfgContainer [2020-11-07 00:23:59,707 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:23:59,714 INFO L168 Benchmark]: Toolchain (without parser) took 3331.33 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 139.6 MB in the beginning and 131.2 MB in the end (delta: 8.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:59,715 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 138.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:23:59,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.07 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 126.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:59,721 INFO L168 Benchmark]: Boogie Preprocessor took 63.33 ms. Allocated memory is still 163.6 MB. Free memory was 126.8 MB in the beginning and 124.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:59,722 INFO L168 Benchmark]: RCFGBuilder took 1090.30 ms. Allocated memory is still 163.6 MB. Free memory was 124.7 MB in the beginning and 125.2 MB in the end (delta: -484.3 kB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:59,724 INFO L168 Benchmark]: TraceAbstraction took 1825.25 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 124.6 MB in the beginning and 131.2 MB in the end (delta: -6.6 MB). Peak memory consumption was 28.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:23:59,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 138.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 338.07 ms. Allocated memory is still 163.6 MB. Free memory was 139.0 MB in the beginning and 126.8 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.33 ms. Allocated memory is still 163.6 MB. Free memory was 126.8 MB in the beginning and 124.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1090.30 ms. Allocated memory is still 163.6 MB. Free memory was 124.7 MB in the beginning and 125.2 MB in the end (delta: -484.3 kB). Peak memory consumption was 17.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1825.25 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 124.6 MB in the beginning and 131.2 MB in the end (delta: -6.6 MB). Peak memory consumption was 28.5 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: 1.7s, 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...