/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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:31:09,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:09,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:09,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:09,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:31:09,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:31:09,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:31:09,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:31:09,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:31:09,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:31:09,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:31:09,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:31:09,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:31:09,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:31:09,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:31:09,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:31:09,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:31:09,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:31:09,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:31:09,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:31:09,965 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:31:09,987 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:09,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:09,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:09,993 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:09,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:09,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:09,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:09,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:09,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:09,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:09,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:09,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:09,996 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:09,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:09,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:09,997 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:09,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:09,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:09,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:09,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:09,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:09,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:09,998 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:09,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:10,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:10,441 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:10,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:10,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:10,446 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:10,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2021-02-22 01:31:10,520 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7aca7b2e/70836b9f07a34eb1a99b1d2c0465655d/FLAG6f2c33dea [2021-02-22 01:31:11,083 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:11,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2021-02-22 01:31:11,093 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7aca7b2e/70836b9f07a34eb1a99b1d2c0465655d/FLAG6f2c33dea [2021-02-22 01:31:11,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7aca7b2e/70836b9f07a34eb1a99b1d2c0465655d [2021-02-22 01:31:11,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:11,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:11,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:11,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:11,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:11,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:11" (1/1) ... [2021-02-22 01:31:11,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69d59e0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11, skipping insertion in model container [2021-02-22 01:31:11,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:11" (1/1) ... [2021-02-22 01:31:11,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:11,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:11,658 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_1052c.c[2271,2284] [2021-02-22 01:31:11,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:11,671 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:11,710 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_1052c.c[2271,2284] [2021-02-22 01:31:11,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:11,728 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:11,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11 WrapperNode [2021-02-22 01:31:11,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:11,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:11,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:11,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:11,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11" (1/1) ... [2021-02-22 01:31:11,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11" (1/1) ... [2021-02-22 01:31:11,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11" (1/1) ... [2021-02-22 01:31:11,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11" (1/1) ... [2021-02-22 01:31:11,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11" (1/1) ... [2021-02-22 01:31:11,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11" (1/1) ... [2021-02-22 01:31:11,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11" (1/1) ... [2021-02-22 01:31:11,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:11,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:11,782 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:11,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:11,784 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11" (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 [2021-02-22 01:31:11,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:11,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:11,892 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:11,893 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2021-02-22 01:31:11,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-22 01:31:11,893 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2021-02-22 01:31:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:11,896 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-22 01:31:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:11,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:12,617 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:12,617 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-22 01:31:12,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:12 BoogieIcfgContainer [2021-02-22 01:31:12,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:12,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:12,623 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:12,627 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:12,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:11" (1/3) ... [2021-02-22 01:31:12,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78879436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:12, skipping insertion in model container [2021-02-22 01:31:12,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:11" (2/3) ... [2021-02-22 01:31:12,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78879436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:12, skipping insertion in model container [2021-02-22 01:31:12,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:12" (3/3) ... [2021-02-22 01:31:12,631 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2021-02-22 01:31:12,643 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:12,648 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:12,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:12,707 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:12,707 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:12,707 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:12,708 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:12,708 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:12,708 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:12,708 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:12,708 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:12,730 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2021-02-22 01:31:12,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-02-22 01:31:12,745 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:12,746 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] [2021-02-22 01:31:12,747 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:12,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:12,756 INFO L82 PathProgramCache]: Analyzing trace with hash -130980842, now seen corresponding path program 1 times [2021-02-22 01:31:12,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:12,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163575178] [2021-02-22 01:31:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:12,851 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:12,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:13,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:13,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:13,033 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:13,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:13,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:13,098 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:13,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:13,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-22 01:31:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:13,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:13,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:13,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:13,125 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:13,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:31:13,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163575178] [2021-02-22 01:31:13,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:13,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:13,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545701252] [2021-02-22 01:31:13,146 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:13,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:13,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:13,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:13,167 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 4 states. [2021-02-22 01:31:13,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:13,496 INFO L93 Difference]: Finished difference Result 200 states and 245 transitions. [2021-02-22 01:31:13,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:13,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2021-02-22 01:31:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:13,510 INFO L225 Difference]: With dead ends: 200 [2021-02-22 01:31:13,510 INFO L226 Difference]: Without dead ends: 103 [2021-02-22 01:31:13,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:31:13,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-22 01:31:13,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-02-22 01:31:13,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2021-02-22 01:31:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2021-02-22 01:31:13,575 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 37 [2021-02-22 01:31:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:13,576 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2021-02-22 01:31:13,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2021-02-22 01:31:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-02-22 01:31:13,579 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:13,579 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] [2021-02-22 01:31:13,580 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:13,580 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:13,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:13,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1139684738, now seen corresponding path program 1 times [2021-02-22 01:31:13,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:13,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892719980] [2021-02-22 01:31:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:13,584 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:13,631 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:13,700 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:13,761 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:13,761 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:13,764 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:13,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:13 BoogieIcfgContainer [2021-02-22 01:31:13,789 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:13,792 INFO L168 Benchmark]: Toolchain (without parser) took 2370.75 ms. Allocated memory is still 177.2 MB. Free memory was 154.1 MB in the beginning and 76.2 MB in the end (delta: 77.9 MB). Peak memory consumption was 78.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:13,794 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 177.2 MB. Free memory is still 149.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:13,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.41 ms. Allocated memory is still 177.2 MB. Free memory was 153.1 MB in the beginning and 142.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:13,798 INFO L168 Benchmark]: Boogie Preprocessor took 51.32 ms. Allocated memory is still 177.2 MB. Free memory was 142.0 MB in the beginning and 140.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:13,799 INFO L168 Benchmark]: RCFGBuilder took 838.30 ms. Allocated memory is still 177.2 MB. Free memory was 140.0 MB in the beginning and 150.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:13,800 INFO L168 Benchmark]: TraceAbstraction took 1165.66 ms. Allocated memory is still 177.2 MB. Free memory was 149.6 MB in the beginning and 76.2 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:13,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 177.2 MB. Free memory is still 149.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 293.41 ms. Allocated memory is still 177.2 MB. Free memory was 153.1 MB in the beginning and 142.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.32 ms. Allocated memory is still 177.2 MB. Free memory was 142.0 MB in the beginning and 140.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 838.30 ms. Allocated memory is still 177.2 MB. Free memory was 140.0 MB in the beginning and 150.1 MB in the end (delta: -10.0 MB). Peak memory consumption was 21.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1165.66 ms. Allocated memory is still 177.2 MB. Free memory was 149.6 MB in the beginning and 76.2 MB in the end (delta: 73.4 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 105]: 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 100, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L100] double x = -0.0; [L101] CALL, EXPR floor_double(x) [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L28] COND FALSE !(j0 < 20) [L49] COND TRUE j0 > 51 [L50] COND TRUE j0 == 0x400 [L51] return x + x; [L101] RET, EXPR floor_double(x) [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L105] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 19 SDslu, 93 SDs, 0 SdLazy, 133 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred 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...