/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:37:23,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:37:23,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:37:23,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:37:23,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:37:23,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:37:23,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:37:23,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:37:23,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:37:23,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:37:23,378 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:37:23,385 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:37:23,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:37:23,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:37:23,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:37:23,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:37:23,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:37:23,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:37:23,430 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:37:23,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:37:23,432 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:37:23,453 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:37:23,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:37:23,458 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:37:23,458 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:37:23,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:37:23,459 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:37:23,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:37:23,459 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:37:23,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:37:23,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:37:23,461 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:37:23,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:37:23,461 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:37:23,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:37:23,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:37:23,462 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:37:23,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:37:23,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:37:23,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:23,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:37:23,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:37:23,463 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:37:23,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:37:23,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:37:23,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:37:23,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:37:23,941 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:37:23,942 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:37:23,943 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-23 17:37:24,045 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f64704e/defb043771ce45cf9c4028e17221f114/FLAGe934485b9 [2021-02-23 17:37:24,655 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:37:24,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-23 17:37:24,666 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f64704e/defb043771ce45cf9c4028e17221f114/FLAGe934485b9 [2021-02-23 17:37:25,017 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0f64704e/defb043771ce45cf9c4028e17221f114 [2021-02-23 17:37:25,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:37:25,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:37:25,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:25,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:37:25,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:37:25,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335586de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25, skipping insertion in model container [2021-02-23 17:37:25,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:37:25,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:37:25,435 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-02-23 17:37:25,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:25,456 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:37:25,500 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c[4119,4132] [2021-02-23 17:37:25,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:25,527 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:37:25,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25 WrapperNode [2021-02-23 17:37:25,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:25,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:37:25,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:37:25,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:37:25,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (1/1) ... [2021-02-23 17:37:25,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:37:25,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:37:25,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:37:25,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:37:25,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (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 [2021-02-23 17:37:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:37:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:37:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:37:25,786 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-23 17:37:25,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-23 17:37:25,787 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:37:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:37:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:37:25,787 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:37:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:37:25,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 17:37:25,789 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-23 17:37:25,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:37:25,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:37:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:37:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:37:25,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:37:25,791 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-23 17:37:25,791 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:37:25,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:37:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:37:25,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-23 17:37:25,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:37:26,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:37:26,513 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-23 17:37:26,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:26 BoogieIcfgContainer [2021-02-23 17:37:26,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:37:26,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:37:26,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:37:26,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:37:26,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:37:25" (1/3) ... [2021-02-23 17:37:26,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317eb6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:26, skipping insertion in model container [2021-02-23 17:37:26,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:25" (2/3) ... [2021-02-23 17:37:26,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@317eb6b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:26, skipping insertion in model container [2021-02-23 17:37:26,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:26" (3/3) ... [2021-02-23 17:37:26,524 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-02-23 17:37:26,531 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:37:26,536 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:37:26,555 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:37:26,579 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:37:26,579 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:37:26,579 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:37:26,579 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:37:26,579 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:37:26,580 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:37:26,580 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:37:26,580 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:37:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2021-02-23 17:37:26,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 17:37:26,632 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:26,634 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] [2021-02-23 17:37:26,634 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:26,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:26,649 INFO L82 PathProgramCache]: Analyzing trace with hash 2046356497, now seen corresponding path program 1 times [2021-02-23 17:37:26,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:26,661 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15849815] [2021-02-23 17:37:26,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:26,732 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:26,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:26,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:26,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:26,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:27,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:27,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:27,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:27,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 17:37:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:27,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:27,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:27,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:27,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-23 17:37:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:27,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:27,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:27,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:27,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:27,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:37:27,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [15849815] [2021-02-23 17:37:27,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:27,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:37:27,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556706683] [2021-02-23 17:37:27,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:37:27,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:27,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:37:27,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:37:27,157 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2021-02-23 17:37:27,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:27,755 INFO L93 Difference]: Finished difference Result 387 states and 476 transitions. [2021-02-23 17:37:27,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:37:27,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-23 17:37:27,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:27,773 INFO L225 Difference]: With dead ends: 387 [2021-02-23 17:37:27,774 INFO L226 Difference]: Without dead ends: 198 [2021-02-23 17:37:27,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:37:27,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-23 17:37:27,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-02-23 17:37:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-02-23 17:37:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 224 transitions. [2021-02-23 17:37:27,846 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 224 transitions. Word has length 56 [2021-02-23 17:37:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:27,847 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 224 transitions. [2021-02-23 17:37:27,847 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:37:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 224 transitions. [2021-02-23 17:37:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-23 17:37:27,851 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:27,851 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:37:27,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:37:27,852 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:27,853 INFO L82 PathProgramCache]: Analyzing trace with hash -622845468, now seen corresponding path program 1 times [2021-02-23 17:37:27,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:27,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857033203] [2021-02-23 17:37:27,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:27,857 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:27,996 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:28,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:28,129 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:28,176 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:37:28,176 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:37:28,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:37:28,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:37:28 BoogieIcfgContainer [2021-02-23 17:37:28,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:37:28,199 INFO L168 Benchmark]: Toolchain (without parser) took 3176.29 ms. Allocated memory was 152.0 MB in the beginning and 186.6 MB in the end (delta: 34.6 MB). Free memory was 135.8 MB in the beginning and 130.8 MB in the end (delta: 5.1 MB). Peak memory consumption was 40.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:28,200 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 152.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:28,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 485.55 ms. Allocated memory is still 152.0 MB. Free memory was 134.8 MB in the beginning and 121.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:28,202 INFO L168 Benchmark]: Boogie Preprocessor took 136.98 ms. Allocated memory is still 152.0 MB. Free memory was 121.5 MB in the beginning and 135.2 MB in the end (delta: -13.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:28,203 INFO L168 Benchmark]: RCFGBuilder took 848.97 ms. Allocated memory is still 152.0 MB. Free memory was 135.2 MB in the beginning and 92.2 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:28,204 INFO L168 Benchmark]: TraceAbstraction took 1680.19 ms. Allocated memory was 152.0 MB in the beginning and 186.6 MB in the end (delta: 34.6 MB). Free memory was 91.5 MB in the beginning and 130.8 MB in the end (delta: -39.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:28,210 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 152.0 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 485.55 ms. Allocated memory is still 152.0 MB. Free memory was 134.8 MB in the beginning and 121.5 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 136.98 ms. Allocated memory is still 152.0 MB. Free memory was 121.5 MB in the beginning and 135.2 MB in the end (delta: -13.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 848.97 ms. Allocated memory is still 152.0 MB. Free memory was 135.2 MB in the beginning and 92.2 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1680.19 ms. Allocated memory was 152.0 MB in the beginning and 186.6 MB in the end (delta: 34.6 MB). Free memory was 91.5 MB in the beginning and 130.8 MB in the end (delta: -39.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L182] CALL isfinite_double(x) [L163] __int32_t hx; [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L182] RET isfinite_double(x) [L182] COND TRUE isfinite_double(x) [L184] CALL, EXPR fmod_double(x, y) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); [L184] RET, EXPR fmod_double(x, y) [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x [L188] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 208 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 37 SDslu, 175 SDs, 0 SdLazy, 245 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205occurred 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...