/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/double_req_bl_0730b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:55:04,840 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:55:04,844 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:55:04,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 03:55:04,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 03:55:04,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 03:55:04,914 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 03:55:04,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 03:55:04,928 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 03:55:04,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 03:55:04,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 03:55:04,937 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 03:55:04,938 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:55:04,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:55:04,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:55:04,945 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:55:04,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:55:04,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:55:04,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:55:04,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:55:04,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:55:04,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:55:04,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:55:04,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:55:04,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:55:05,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:55:05,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:55:05,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:55:05,005 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 03:55:05,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:55:05,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:55:05,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:55:05,038 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:55:05,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:55:05,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:55:05,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:55:05,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:55:05,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:55:05,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:55:05,041 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:55:05,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:55:05,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:55:05,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:55:05,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:55:05,043 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:55:05,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:55:05,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:55:05,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:05,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:55:05,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:55:05,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:55:05,045 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:55:05,045 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:55:05,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:55:05,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:55:05,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:55:05,477 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:55:05,478 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:55:05,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2021-02-24 03:55:05,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ffadd65/deaf9ca00be9439a83328557533f2e40/FLAG80892fee7 [2021-02-24 03:55:06,214 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:55:06,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2021-02-24 03:55:06,226 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ffadd65/deaf9ca00be9439a83328557533f2e40/FLAG80892fee7 [2021-02-24 03:55:06,562 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ffadd65/deaf9ca00be9439a83328557533f2e40 [2021-02-24 03:55:06,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:55:06,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:55:06,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:06,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:55:06,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:55:06,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:06" (1/1) ... [2021-02-24 03:55:06,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b0ce6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:06, skipping insertion in model container [2021-02-24 03:55:06,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:06" (1/1) ... [2021-02-24 03:55:06,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:55:06,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:55:06,960 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_0730b.c[3225,3238] [2021-02-24 03:55:06,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:06,974 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:55:07,015 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_0730b.c[3225,3238] [2021-02-24 03:55:07,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:07,043 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:55:07,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07 WrapperNode [2021-02-24 03:55:07,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:07,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:55:07,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:55:07,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:55:07,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07" (1/1) ... [2021-02-24 03:55:07,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07" (1/1) ... [2021-02-24 03:55:07,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07" (1/1) ... [2021-02-24 03:55:07,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07" (1/1) ... [2021-02-24 03:55:07,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07" (1/1) ... [2021-02-24 03:55:07,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07" (1/1) ... [2021-02-24 03:55:07,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07" (1/1) ... [2021-02-24 03:55:07,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:55:07,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:55:07,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:55:07,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:55:07,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07" (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 03:55:07,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:55:07,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:55:07,265 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:55:07,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2021-02-24 03:55:07,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-24 03:55:07,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:55:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:55:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:55:07,266 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:55:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:55:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-24 03:55:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2021-02-24 03:55:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:55:07,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:55:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:55:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:55:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:55:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-24 03:55:07,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:55:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:55:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:55:07,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:55:08,018 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:55:08,019 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-24 03:55:08,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:08 BoogieIcfgContainer [2021-02-24 03:55:08,021 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:55:08,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:55:08,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:55:08,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:55:08,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:55:06" (1/3) ... [2021-02-24 03:55:08,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a0d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:08, skipping insertion in model container [2021-02-24 03:55:08,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:07" (2/3) ... [2021-02-24 03:55:08,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72a0d2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:08, skipping insertion in model container [2021-02-24 03:55:08,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:08" (3/3) ... [2021-02-24 03:55:08,031 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2021-02-24 03:55:08,048 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:55:08,059 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:55:08,079 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:55:08,133 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:55:08,133 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:55:08,133 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:55:08,134 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:55:08,134 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:55:08,134 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:55:08,134 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:55:08,134 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:55:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states. [2021-02-24 03:55:08,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-24 03:55:08,179 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:08,180 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] [2021-02-24 03:55:08,181 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1544246769, now seen corresponding path program 1 times [2021-02-24 03:55:08,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:08,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733410659] [2021-02-24 03:55:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:08,272 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:08,414 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:08,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:08,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:08,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:08,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:08,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:08,532 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:08,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:08,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-24 03:55:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:08,568 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:08,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:08,570 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:08,571 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:08,589 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 03:55:08,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733410659] [2021-02-24 03:55:08,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:08,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:55:08,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555345939] [2021-02-24 03:55:08,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:55:08,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:08,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:55:08,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:55:08,617 INFO L87 Difference]: Start difference. First operand 163 states. Second operand 4 states. [2021-02-24 03:55:09,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:09,363 INFO L93 Difference]: Finished difference Result 295 states and 358 transitions. [2021-02-24 03:55:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:55:09,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2021-02-24 03:55:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:09,378 INFO L225 Difference]: With dead ends: 295 [2021-02-24 03:55:09,379 INFO L226 Difference]: Without dead ends: 155 [2021-02-24 03:55:09,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:55:09,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-02-24 03:55:09,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-02-24 03:55:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2021-02-24 03:55:09,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2021-02-24 03:55:09,453 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 43 [2021-02-24 03:55:09,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:09,454 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2021-02-24 03:55:09,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:55:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2021-02-24 03:55:09,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 03:55:09,457 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:09,457 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] [2021-02-24 03:55:09,457 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:55:09,458 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:09,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:09,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1619038921, now seen corresponding path program 1 times [2021-02-24 03:55:09,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:09,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325422659] [2021-02-24 03:55:09,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:09,463 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:09,513 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:09,563 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:09,626 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:55:09,626 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:55:09,628 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:55:09,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:55:09 BoogieIcfgContainer [2021-02-24 03:55:09,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:55:09,655 INFO L168 Benchmark]: Toolchain (without parser) took 3084.98 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 133.6 MB in the beginning and 148.0 MB in the end (delta: -14.3 MB). Peak memory consumption was 19.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:09,657 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 137.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:55:09,658 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.78 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 120.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:09,662 INFO L168 Benchmark]: Boogie Preprocessor took 105.20 ms. Allocated memory is still 158.3 MB. Free memory was 120.2 MB in the beginning and 118.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:09,663 INFO L168 Benchmark]: RCFGBuilder took 868.94 ms. Allocated memory is still 158.3 MB. Free memory was 118.2 MB in the beginning and 118.3 MB in the end (delta: -56.9 kB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:09,665 INFO L168 Benchmark]: TraceAbstraction took 1628.35 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 118.3 MB in the beginning and 148.0 MB in the end (delta: -29.7 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:09,673 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 158.3 MB. Free memory is still 137.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 455.78 ms. Allocated memory is still 158.3 MB. Free memory was 132.7 MB in the beginning and 120.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 105.20 ms. Allocated memory is still 158.3 MB. Free memory was 120.2 MB in the beginning and 118.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 868.94 ms. Allocated memory is still 158.3 MB. Free memory was 118.2 MB in the beginning and 118.3 MB in the end (delta: -56.9 kB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1628.35 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 118.3 MB in the beginning and 148.0 MB in the end (delta: -29.7 MB). Peak memory consumption was 2.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = -0.0; [L152] CALL, EXPR __ieee754_sqrt(x) [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; [L152] RET, EXPR __ieee754_sqrt(x) [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L156] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 35 SDslu, 141 SDs, 0 SdLazy, 183 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred 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...