/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:55:56,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:55:56,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:55:56,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:55:56,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:55:56,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:55:56,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:55:56,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:55:56,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:55:56,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:55:56,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:55:56,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:55:56,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:55:56,951 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:55:56,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:55:56,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:55:56,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:55:56,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:55:56,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:55:56,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:55:56,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:55:57,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:55:57,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:55:57,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:55:57,013 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:55:57,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:55:57,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:55:57,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:55:57,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:55:57,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:55:57,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:55:57,015 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:55:57,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:55:57,015 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:55:57,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:55:57,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:55:57,016 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:55:57,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:55:57,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:55:57,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:57,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:55:57,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:55:57,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:55:57,018 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:55:57,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:55:57,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:55:57,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:55:57,466 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:55:57,467 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:55:57,468 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:55:57,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2021-02-24 03:55:57,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7766380de/8a05877981b44f5498e59a5f8ae0084b/FLAG38a96978c [2021-02-24 03:55:58,240 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:55:58,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2021-02-24 03:55:58,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7766380de/8a05877981b44f5498e59a5f8ae0084b/FLAG38a96978c [2021-02-24 03:55:58,609 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7766380de/8a05877981b44f5498e59a5f8ae0084b [2021-02-24 03:55:58,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:55:58,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:55:58,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:58,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:55:58,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:55:58,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:58" (1/1) ... [2021-02-24 03:55:58,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c987323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58, skipping insertion in model container [2021-02-24 03:55:58,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:58" (1/1) ... [2021-02-24 03:55:58,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:55:58,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:55:58,844 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/float_req_bl_1051.c[1637,1650] [2021-02-24 03:55:58,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:58,861 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:55:58,918 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/float_req_bl_1051.c[1637,1650] [2021-02-24 03:55:58,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:58,945 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:55:58,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58 WrapperNode [2021-02-24 03:55:58,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:58,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:55:58,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:55:58,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:55:58,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58" (1/1) ... [2021-02-24 03:55:58,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58" (1/1) ... [2021-02-24 03:55:58,991 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58" (1/1) ... [2021-02-24 03:55:58,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58" (1/1) ... [2021-02-24 03:55:59,017 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58" (1/1) ... [2021-02-24 03:55:59,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58" (1/1) ... [2021-02-24 03:55:59,039 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58" (1/1) ... [2021-02-24 03:55:59,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:55:59,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:55:59,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:55:59,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:55:59,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58" (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 [2021-02-24 03:55:59,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:55:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:55:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:55:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2021-02-24 03:55:59,183 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-24 03:55:59,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:55:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:55:59,184 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:55:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:55:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:55:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-24 03:55:59,185 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2021-02-24 03:55:59,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:55:59,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:55:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:55:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:55:59,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:55:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-24 03:55:59,188 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:55:59,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:55:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:55:59,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:55:59,885 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:55:59,885 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-24 03:55:59,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:59 BoogieIcfgContainer [2021-02-24 03:55:59,887 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:55:59,889 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:55:59,889 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:55:59,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:55:59,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:55:58" (1/3) ... [2021-02-24 03:55:59,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130fee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:59, skipping insertion in model container [2021-02-24 03:55:59,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:58" (2/3) ... [2021-02-24 03:55:59,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@130fee1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:59, skipping insertion in model container [2021-02-24 03:55:59,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:59" (3/3) ... [2021-02-24 03:55:59,896 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2021-02-24 03:55:59,904 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:55:59,909 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:55:59,929 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:55:59,955 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:55:59,955 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:55:59,955 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:55:59,956 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:55:59,956 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:55:59,956 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:55:59,956 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:55:59,956 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:55:59,973 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-24 03:55:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-24 03:55:59,985 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:59,986 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] [2021-02-24 03:55:59,986 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:59,993 INFO L82 PathProgramCache]: Analyzing trace with hash 998985688, now seen corresponding path program 1 times [2021-02-24 03:56:00,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:00,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210207874] [2021-02-24 03:56:00,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:00,085 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:00,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:00,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:00,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:00,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:00,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:00,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:00,363 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:00,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-24 03:56:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:00,403 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:00,405 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:00,406 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:00,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-24 03:56:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:00,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:00,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:00,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:56:00,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210207874] [2021-02-24 03:56:00,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:00,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:56:00,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60446917] [2021-02-24 03:56:00,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:56:00,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:00,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:56:00,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:56:00,474 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 4 states. [2021-02-24 03:56:00,649 WARN L202 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2021-02-24 03:56:01,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:01,097 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2021-02-24 03:56:01,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:56:01,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-02-24 03:56:01,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:01,120 INFO L225 Difference]: With dead ends: 133 [2021-02-24 03:56:01,121 INFO L226 Difference]: Without dead ends: 70 [2021-02-24 03:56:01,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-24 03:56:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-02-24 03:56:01,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-02-24 03:56:01,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-02-24 03:56:01,188 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 39 [2021-02-24 03:56:01,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:01,189 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-02-24 03:56:01,189 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:56:01,189 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-02-24 03:56:01,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-24 03:56:01,191 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:01,191 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] [2021-02-24 03:56:01,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:56:01,192 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:01,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:01,193 INFO L82 PathProgramCache]: Analyzing trace with hash -240593112, now seen corresponding path program 1 times [2021-02-24 03:56:01,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:01,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851293119] [2021-02-24 03:56:01,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:01,197 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:56:01,273 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:56:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:56:01,320 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:56:01,359 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:56:01,360 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:56:01,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:56:01,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:56:01 BoogieIcfgContainer [2021-02-24 03:56:01,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:56:01,382 INFO L168 Benchmark]: Toolchain (without parser) took 2767.25 ms. Allocated memory is still 162.5 MB. Free memory was 139.0 MB in the beginning and 125.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:01,383 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 141.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:56:01,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.48 ms. Allocated memory is still 162.5 MB. Free memory was 137.9 MB in the beginning and 127.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:01,385 INFO L168 Benchmark]: Boogie Preprocessor took 95.41 ms. Allocated memory is still 162.5 MB. Free memory was 127.4 MB in the beginning and 125.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:01,385 INFO L168 Benchmark]: RCFGBuilder took 841.66 ms. Allocated memory is still 162.5 MB. Free memory was 125.8 MB in the beginning and 103.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:01,386 INFO L168 Benchmark]: TraceAbstraction took 1491.44 ms. Allocated memory is still 162.5 MB. Free memory was 103.8 MB in the beginning and 125.9 MB in the end (delta: -22.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:56:01,389 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 162.5 MB. Free memory is still 141.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 314.48 ms. Allocated memory is still 162.5 MB. Free memory was 137.9 MB in the beginning and 127.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.41 ms. Allocated memory is still 162.5 MB. Free memory was 127.4 MB in the beginning and 125.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 841.66 ms. Allocated memory is still 162.5 MB. Free memory was 125.8 MB in the beginning and 103.9 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1491.44 ms. Allocated memory is still 162.5 MB. Free memory was 103.8 MB in the beginning and 125.9 MB in the end (delta: -22.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 73]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 60, overapproximation of someBinaryArithmeticFLOAToperation at line 47, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L68] float x = 0.0f / 0.0f; [L69] CALL, EXPR floor_float(x) [L17] __int32_t i0, j0; [L18] __uint32_t i, ix; [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] ix = (i0 & 0x7fffffff) [L25] j0 = (ix >> 23) - 0x7f [L26] COND FALSE !(j0 < 23) [L46] COND TRUE !((ix) < 0x7f800000L) [L47] return x + x; [L69] RET, EXPR floor_float(x) [L69] float res = floor_float(x); [L72] CALL, EXPR isnan_float(res) [L60] return x != x; [L72] RET, EXPR isnan_float(res) [L72] COND TRUE !isnan_float(res) [L73] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 19 SDslu, 56 SDs, 0 SdLazy, 87 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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...