/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/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:48,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:48,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:48,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:48,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:48,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:48,714 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:48,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:48,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:48,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:48,734 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:48,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:48,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:48,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:48,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:48,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:48,760 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:48,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:48,764 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:48,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:48,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:48,769 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:48,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:48,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:48,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:48,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:48,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:48,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:48,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:10:48,800 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:48,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:48,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:48,802 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:48,803 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:48,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:48,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:48,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:48,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:48,804 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:48,804 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:48,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:48,805 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:48,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:48,805 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:48,805 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:48,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:48,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:48,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:48,806 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:48,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:48,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:48,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:49,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:49,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:49,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:49,207 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:49,208 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:49,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-21 20:10:49,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e2d4837/05e49faccb8d4b3490384440aa865cac/FLAG08b0d60df [2021-02-21 20:10:49,877 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:49,877 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-21 20:10:49,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e2d4837/05e49faccb8d4b3490384440aa865cac/FLAG08b0d60df [2021-02-21 20:10:50,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51e2d4837/05e49faccb8d4b3490384440aa865cac [2021-02-21 20:10:50,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:50,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:50,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:50,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:50,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:50,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd910ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50, skipping insertion in model container [2021-02-21 20:10:50,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,290 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:50,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:50,498 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_1130a.c[2907,2920] [2021-02-21 20:10:50,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:50,514 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:50,562 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_1130a.c[2907,2920] [2021-02-21 20:10:50,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:50,581 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:50,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50 WrapperNode [2021-02-21 20:10:50,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:50,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:50,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:50,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:50,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,604 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (1/1) ... [2021-02-21 20:10:50,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:50,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:50,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:50,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:50,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (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 [2021-02-21 20:10:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:50,751 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-21 20:10:50,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-21 20:10:50,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:50,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-21 20:10:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-21 20:10:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:50,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:50,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:50,756 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-21 20:10:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:50,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:50,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:50,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-21 20:10:50,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:51,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:51,452 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-21 20:10:51,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:51 BoogieIcfgContainer [2021-02-21 20:10:51,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:51,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:51,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:51,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:51,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:50" (1/3) ... [2021-02-21 20:10:51,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efc3c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:51, skipping insertion in model container [2021-02-21 20:10:51,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:50" (2/3) ... [2021-02-21 20:10:51,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7efc3c5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:51, skipping insertion in model container [2021-02-21 20:10:51,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:51" (3/3) ... [2021-02-21 20:10:51,464 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2021-02-21 20:10:51,471 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:51,476 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:51,499 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:51,526 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:51,527 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:51,527 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:51,527 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:51,527 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:51,527 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:51,528 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:51,528 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:51,549 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2021-02-21 20:10:51,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-21 20:10:51,561 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:51,562 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] [2021-02-21 20:10:51,563 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:51,570 INFO L82 PathProgramCache]: Analyzing trace with hash -2051775702, now seen corresponding path program 1 times [2021-02-21 20:10:51,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:51,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491330766] [2021-02-21 20:10:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:51,666 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:51,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:51,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-21 20:10:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:51,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:51,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:51,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:52,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:10:52,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491330766] [2021-02-21 20:10:52,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:52,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:52,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811928163] [2021-02-21 20:10:52,023 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:52,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:52,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:52,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:52,042 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2021-02-21 20:10:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:52,620 INFO L93 Difference]: Finished difference Result 293 states and 357 transitions. [2021-02-21 20:10:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:52,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2021-02-21 20:10:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:52,637 INFO L225 Difference]: With dead ends: 293 [2021-02-21 20:10:52,637 INFO L226 Difference]: Without dead ends: 153 [2021-02-21 20:10:52,642 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 [2021-02-21 20:10:52,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-02-21 20:10:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-02-21 20:10:52,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-02-21 20:10:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2021-02-21 20:10:52,705 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 48 [2021-02-21 20:10:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:52,706 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2021-02-21 20:10:52,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:52,706 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2021-02-21 20:10:52,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-21 20:10:52,709 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:52,709 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] [2021-02-21 20:10:52,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:52,710 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:52,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:52,711 INFO L82 PathProgramCache]: Analyzing trace with hash -1247016723, now seen corresponding path program 1 times [2021-02-21 20:10:52,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:52,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922755674] [2021-02-21 20:10:52,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:52,715 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:52,798 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:52,849 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:52,893 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:52,893 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:52,894 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:52,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:52 BoogieIcfgContainer [2021-02-21 20:10:52,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:52,924 INFO L168 Benchmark]: Toolchain (without parser) took 2660.27 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 135.9 MB in the beginning and 148.8 MB in the end (delta: -12.9 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,926 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:52,927 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.07 ms. Allocated memory is still 159.4 MB. Free memory was 134.8 MB in the beginning and 123.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,930 INFO L168 Benchmark]: Boogie Preprocessor took 52.51 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 121.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,932 INFO L168 Benchmark]: RCFGBuilder took 818.22 ms. Allocated memory is still 159.4 MB. Free memory was 120.9 MB in the beginning and 121.5 MB in the end (delta: -663.5 kB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,933 INFO L168 Benchmark]: TraceAbstraction took 1465.07 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 121.0 MB in the beginning and 148.8 MB in the end (delta: -27.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:52,944 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.07 ms. Allocated memory is still 159.4 MB. Free memory was 134.8 MB in the beginning and 123.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.51 ms. Allocated memory is still 159.4 MB. Free memory was 123.1 MB in the beginning and 121.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 818.22 ms. Allocated memory is still 159.4 MB. Free memory was 120.9 MB in the beginning and 121.5 MB in the end (delta: -663.5 kB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1465.07 ms. Allocated memory was 159.4 MB in the beginning and 196.1 MB in the end (delta: 36.7 MB). Free memory was 121.0 MB in the beginning and 148.8 MB in the end (delta: -27.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 137]: 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 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 34, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 164 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 39 SDslu, 124 SDs, 0 SdLazy, 190 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=161occurred 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...