/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:56:10,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:56:10,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:56:10,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:56:10,882 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:56:10,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:56:10,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:56:10,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:56:10,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:56:10,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:56:10,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:56:10,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:56:10,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:56:10,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:56:10,931 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:56:10,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:56:10,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:56:10,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:56:10,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:56:10,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:56:10,970 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 03:56:10,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:56:10,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:56:10,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:56:10,999 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:56:10,999 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:56:10,999 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:56:11,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:56:11,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:56:11,000 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:56:11,000 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:56:11,002 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:56:11,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:56:11,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:56:11,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:56:11,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:56:11,003 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:56:11,003 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:56:11,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:56:11,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:56:11,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:56:11,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:56:11,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:56:11,005 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:56:11,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:56:11,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:56:11,432 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:56:11,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:56:11,438 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:56:11,439 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:56:11,440 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-24 03:56:11,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03de2d233/b205a07c0de640d4b6de5058ffe5f175/FLAGd94da478d [2021-02-24 03:56:12,200 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:56:12,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-24 03:56:12,210 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03de2d233/b205a07c0de640d4b6de5058ffe5f175/FLAGd94da478d [2021-02-24 03:56:12,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03de2d233/b205a07c0de640d4b6de5058ffe5f175 [2021-02-24 03:56:12,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:56:12,582 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:56:12,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:12,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:56:12,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:56:12,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:12" (1/1) ... [2021-02-24 03:56:12,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32be6e5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:12, skipping insertion in model container [2021-02-24 03:56:12,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:12" (1/1) ... [2021-02-24 03:56:12,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:56:12,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:56:12,969 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] [2021-02-24 03:56:12,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:12,982 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:56:13,019 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] [2021-02-24 03:56:13,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:13,041 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:56:13,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13 WrapperNode [2021-02-24 03:56:13,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:13,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:56:13,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:56:13,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:56:13,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13" (1/1) ... [2021-02-24 03:56:13,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13" (1/1) ... [2021-02-24 03:56:13,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13" (1/1) ... [2021-02-24 03:56:13,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13" (1/1) ... [2021-02-24 03:56:13,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13" (1/1) ... [2021-02-24 03:56:13,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13" (1/1) ... [2021-02-24 03:56:13,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13" (1/1) ... [2021-02-24 03:56:13,099 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:56:13,100 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:56:13,100 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:56:13,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:56:13,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13" (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 03:56:13,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:56:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:56:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:56:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-24 03:56:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-24 03:56:13,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:56:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:56:13,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:56:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:56:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:56:13,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-24 03:56:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-24 03:56:13,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:56:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:56:13,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:56:13,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:56:13,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:56:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-24 03:56:13,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:56:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:56:13,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:56:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-24 03:56:13,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:56:13,853 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:56:13,853 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-24 03:56:13,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:13 BoogieIcfgContainer [2021-02-24 03:56:13,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:56:13,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:56:13,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:56:13,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:56:13,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:56:12" (1/3) ... [2021-02-24 03:56:13,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351febef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:13, skipping insertion in model container [2021-02-24 03:56:13,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:13" (2/3) ... [2021-02-24 03:56:13,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351febef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:13, skipping insertion in model container [2021-02-24 03:56:13,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:13" (3/3) ... [2021-02-24 03:56:13,868 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2021-02-24 03:56:13,876 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:56:13,881 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:56:13,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:56:13,926 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:56:13,926 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:56:13,927 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:56:13,927 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:56:13,927 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:56:13,927 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:56:13,927 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:56:13,927 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:56:13,952 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2021-02-24 03:56:13,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 03:56:13,964 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:13,965 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] [2021-02-24 03:56:13,966 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:13,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:13,972 INFO L82 PathProgramCache]: Analyzing trace with hash -2051775702, now seen corresponding path program 1 times [2021-02-24 03:56:13,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:13,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943500040] [2021-02-24 03:56:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:14,059 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:14,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:14,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:14,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:14,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:14,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:14,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:14,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:14,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:14,390 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:14,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-24 03:56:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:14,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:14,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:14,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:14,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:56:14,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943500040] [2021-02-24 03:56:14,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:14,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:56:14,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309470250] [2021-02-24 03:56:14,493 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:56:14,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:14,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:56:14,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:56:14,512 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 4 states. [2021-02-24 03:56:15,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:15,073 INFO L93 Difference]: Finished difference Result 293 states and 357 transitions. [2021-02-24 03:56:15,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:56:15,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2021-02-24 03:56:15,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:15,088 INFO L225 Difference]: With dead ends: 293 [2021-02-24 03:56:15,088 INFO L226 Difference]: Without dead ends: 153 [2021-02-24 03:56:15,093 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 03:56:15,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-02-24 03:56:15,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2021-02-24 03:56:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2021-02-24 03:56:15,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2021-02-24 03:56:15,163 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 48 [2021-02-24 03:56:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:15,164 INFO L480 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2021-02-24 03:56:15,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:56:15,164 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2021-02-24 03:56:15,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-24 03:56:15,167 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:15,168 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] [2021-02-24 03:56:15,168 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:56:15,169 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:15,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:15,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1247016723, now seen corresponding path program 1 times [2021-02-24 03:56:15,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:15,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29578780] [2021-02-24 03:56:15,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:15,174 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:56:15,254 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:56:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:56:15,370 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:56:15,439 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:56:15,440 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:56:15,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:56:15,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:56:15 BoogieIcfgContainer [2021-02-24 03:56:15,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:56:15,476 INFO L168 Benchmark]: Toolchain (without parser) took 2905.47 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 63.0 MB in the end (delta: 64.6 MB). Peak memory consumption was 65.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:15,479 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:56:15,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.17 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 114.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:15,485 INFO L168 Benchmark]: Boogie Preprocessor took 56.64 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 112.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:15,486 INFO L168 Benchmark]: RCFGBuilder took 758.67 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 109.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:15,487 INFO L168 Benchmark]: TraceAbstraction took 1612.87 ms. Allocated memory is still 151.0 MB. Free memory was 108.9 MB in the beginning and 63.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:15,496 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 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 453.17 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 114.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.64 ms. Allocated memory is still 151.0 MB. Free memory was 114.7 MB in the beginning and 112.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 758.67 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 109.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1612.87 ms. Allocated memory is still 151.0 MB. Free memory was 108.9 MB in the beginning and 63.0 MB in the end (delta: 45.9 MB). Peak memory consumption was 45.9 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: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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...