/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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:50,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:50,335 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:50,372 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:50,372 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:50,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:50,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:50,378 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:50,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:50,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:50,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:50,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:50,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:50,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:50,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:50,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:50,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:50,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:50,403 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:50,406 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:50,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:50,411 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:50,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:50,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:50,419 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:50,437 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:50,438 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:50,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:50,440 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 20:10:50,464 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:50,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:50,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:50,470 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:50,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:50,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:50,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:50,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:50,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:50,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:50,472 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:50,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:50,472 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:50,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:50,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:50,473 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:50,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:50,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:50,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:50,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:50,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:50,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:50,474 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:50,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:50,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:50,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:50,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:50,909 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:50,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2021-02-21 20:10:50,982 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0aa1eaf0/3b39e1e3f8dd4ca191536344425b5bb9/FLAG248be2c1e [2021-02-21 20:10:51,652 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:51,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1210.c [2021-02-21 20:10:51,663 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0aa1eaf0/3b39e1e3f8dd4ca191536344425b5bb9/FLAG248be2c1e [2021-02-21 20:10:51,685 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0aa1eaf0/3b39e1e3f8dd4ca191536344425b5bb9 [2021-02-21 20:10:51,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:51,709 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:51,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:51,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:51,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:51,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6015e21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:51, skipping insertion in model container [2021-02-21 20:10:51,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:51" (1/1) ... [2021-02-21 20:10:51,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:51,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:51,937 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_1210.c[2159,2172] [2021-02-21 20:10:51,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:51,970 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:52,038 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_1210.c[2159,2172] [2021-02-21 20:10:52,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:52,063 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:52,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52 WrapperNode [2021-02-21 20:10:52,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:52,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:52,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:52,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:52,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52" (1/1) ... [2021-02-21 20:10:52,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52" (1/1) ... [2021-02-21 20:10:52,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52" (1/1) ... [2021-02-21 20:10:52,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52" (1/1) ... [2021-02-21 20:10:52,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52" (1/1) ... [2021-02-21 20:10:52,155 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52" (1/1) ... [2021-02-21 20:10:52,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52" (1/1) ... [2021-02-21 20:10:52,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:52,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:52,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:52,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:52,180 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52" (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 20:10:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2021-02-21 20:10:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-21 20:10:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2021-02-21 20:10:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:52,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-21 20:10:52,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:52,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:52,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:52,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:52,937 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:52,938 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-21 20:10:52,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:52 BoogieIcfgContainer [2021-02-21 20:10:52,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:52,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:52,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:52,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:52,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:51" (1/3) ... [2021-02-21 20:10:52,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1653eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:52, skipping insertion in model container [2021-02-21 20:10:52,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:52" (2/3) ... [2021-02-21 20:10:52,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1653eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:52, skipping insertion in model container [2021-02-21 20:10:52,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:52" (3/3) ... [2021-02-21 20:10:52,949 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2021-02-21 20:10:52,957 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:52,963 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:52,982 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:53,008 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:53,008 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:53,008 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:53,009 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:53,009 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:53,009 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:53,009 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:53,009 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:53,029 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2021-02-21 20:10:53,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 20:10:53,042 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:53,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:10:53,043 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:53,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:53,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1176338435, now seen corresponding path program 1 times [2021-02-21 20:10:53,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:53,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531763835] [2021-02-21 20:10:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:53,141 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:53,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:53,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:10:53,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:53,460 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,462 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,463 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-02-21 20:10:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:53,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:53,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:53,485 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 20:10:53,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531763835] [2021-02-21 20:10:53,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:53,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:53,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944729900] [2021-02-21 20:10:53,494 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:53,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:53,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:53,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:53,512 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 4 states. [2021-02-21 20:10:54,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:54,012 INFO L93 Difference]: Finished difference Result 234 states and 272 transitions. [2021-02-21 20:10:54,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:54,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-21 20:10:54,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:54,025 INFO L225 Difference]: With dead ends: 234 [2021-02-21 20:10:54,025 INFO L226 Difference]: Without dead ends: 115 [2021-02-21 20:10:54,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 20:10:54,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-02-21 20:10:54,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-02-21 20:10:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-02-21 20:10:54,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 119 transitions. [2021-02-21 20:10:54,101 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 119 transitions. Word has length 46 [2021-02-21 20:10:54,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:54,103 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 119 transitions. [2021-02-21 20:10:54,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:54,103 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 119 transitions. [2021-02-21 20:10:54,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-21 20:10:54,109 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:54,109 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] [2021-02-21 20:10:54,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:54,110 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash -551920588, now seen corresponding path program 1 times [2021-02-21 20:10:54,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:54,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120184568] [2021-02-21 20:10:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:54,121 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:54,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:54,225 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:54,225 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:54,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:54,227 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-21 20:10:54,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:54,231 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:54,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:54,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:54,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:54,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 20:10:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:54,366 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:54,370 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:54,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-02-21 20:10:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:54,382 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:54,383 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:54,389 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 20:10:54,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120184568] [2021-02-21 20:10:54,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:54,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 20:10:54,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288824731] [2021-02-21 20:10:54,398 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 20:10:54,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:54,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 20:10:54,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:10:54,399 INFO L87 Difference]: Start difference. First operand 115 states and 119 transitions. Second operand 5 states. [2021-02-21 20:10:54,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:54,805 INFO L93 Difference]: Finished difference Result 122 states and 125 transitions. [2021-02-21 20:10:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 20:10:54,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2021-02-21 20:10:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:54,811 INFO L225 Difference]: With dead ends: 122 [2021-02-21 20:10:54,811 INFO L226 Difference]: Without dead ends: 115 [2021-02-21 20:10:54,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 20:10:54,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-02-21 20:10:54,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-02-21 20:10:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2021-02-21 20:10:54,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 118 transitions. [2021-02-21 20:10:54,834 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 118 transitions. Word has length 60 [2021-02-21 20:10:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:54,836 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 118 transitions. [2021-02-21 20:10:54,836 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 20:10:54,836 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 118 transitions. [2021-02-21 20:10:54,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-02-21 20:10:54,838 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:54,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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 20:10:54,839 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:54,839 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:54,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:54,840 INFO L82 PathProgramCache]: Analyzing trace with hash 885747555, now seen corresponding path program 1 times [2021-02-21 20:10:54,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:54,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4789380] [2021-02-21 20:10:54,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:54,843 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:54,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:54,896 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:54,945 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:54,990 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:54,990 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:54,991 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:10:55,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:55 BoogieIcfgContainer [2021-02-21 20:10:55,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:55,014 INFO L168 Benchmark]: Toolchain (without parser) took 3316.66 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 128.8 MB in the beginning and 141.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:55,014 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 153.1 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:55,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.95 ms. Allocated memory is still 153.1 MB. Free memory was 127.7 MB in the beginning and 116.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:55,016 INFO L168 Benchmark]: Boogie Preprocessor took 106.38 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 114.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:55,017 INFO L168 Benchmark]: RCFGBuilder took 766.29 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 116.7 MB in the end (delta: -2.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:55,018 INFO L168 Benchmark]: TraceAbstraction took 2069.82 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 116.1 MB in the beginning and 141.6 MB in the end (delta: -25.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:55,021 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 153.1 MB. Free memory is still 127.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 351.95 ms. Allocated memory is still 153.1 MB. Free memory was 127.7 MB in the beginning and 116.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 106.38 ms. Allocated memory is still 153.1 MB. Free memory was 116.3 MB in the beginning and 114.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 766.29 ms. Allocated memory is still 153.1 MB. Free memory was 114.3 MB in the beginning and 116.7 MB in the end (delta: -2.4 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2069.82 ms. Allocated memory was 153.1 MB in the beginning and 184.5 MB in the end (delta: 31.5 MB). Free memory was 116.1 MB in the beginning and 141.6 MB in the end (delta: -25.5 MB). Peak memory consumption was 6.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 88]: 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 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L84] CALL, EXPR modf_float(x, &iptr) [L16] __int32_t i0, j0; [L17] __uint32_t i; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f [L24] COND TRUE j0 < 23 [L25] COND TRUE j0 < 0 [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; [L84] RET, EXPR modf_float(x, &iptr) [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L87] CALL, EXPR isnan_float(iptr) [L75] return x != x; [L87] RET, EXPR isnan_float(iptr) [L87] isnan_float(iptr) && !isnan_float(res) [L87] CALL, EXPR isnan_float(res) [L75] return x != x; [L87] RET, EXPR isnan_float(res) [L87] isnan_float(iptr) && !isnan_float(res) [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L88] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 132 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 243 SDtfs, 38 SDslu, 236 SDs, 0 SdLazy, 328 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=129occurred 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, 2 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...