/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_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:10:43,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:10:44,000 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:10:44,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:10:44,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:10:44,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:10:44,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:10:44,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:10:44,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:10:44,060 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:10:44,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:10:44,063 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:10:44,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:10:44,065 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:10:44,066 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:10:44,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:10:44,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:10:44,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:10:44,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:10:44,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:10:44,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:10:44,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:10:44,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:10:44,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:10:44,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:10:44,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:10:44,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:10:44,097 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:10:44,098 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 20:10:44,114 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:10:44,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:10:44,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:10:44,116 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:10:44,116 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:10:44,116 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:10:44,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:10:44,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:10:44,117 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:10:44,117 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:10:44,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:10:44,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:10:44,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:10:44,118 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:10:44,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:10:44,119 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:10:44,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:10:44,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:10:44,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:10:44,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:10:44,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:10:44,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:10:44,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:10:44,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:10:44,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:10:44,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:10:44,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:10:44,582 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:10:44,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2021-02-21 20:10:44,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f35db420f/4cc44dabe799452fb32bd7074d043167/FLAG851cb11c1 [2021-02-21 20:10:45,308 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:10:45,308 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1091.c [2021-02-21 20:10:45,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f35db420f/4cc44dabe799452fb32bd7074d043167/FLAG851cb11c1 [2021-02-21 20:10:45,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f35db420f/4cc44dabe799452fb32bd7074d043167 [2021-02-21 20:10:45,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:10:45,689 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:10:45,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:45,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:10:45,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:10:45,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:45" (1/1) ... [2021-02-21 20:10:45,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3609ec0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45, skipping insertion in model container [2021-02-21 20:10:45,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:10:45" (1/1) ... [2021-02-21 20:10:45,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:10:45,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:10:45,912 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_1091.c[1603,1616] [2021-02-21 20:10:45,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:45,925 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:10:45,950 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_1091.c[1603,1616] [2021-02-21 20:10:45,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:10:45,968 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:10:45,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45 WrapperNode [2021-02-21 20:10:45,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:10:45,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:10:45,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:10:45,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:10:45,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45" (1/1) ... [2021-02-21 20:10:45,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45" (1/1) ... [2021-02-21 20:10:45,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45" (1/1) ... [2021-02-21 20:10:45,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45" (1/1) ... [2021-02-21 20:10:46,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45" (1/1) ... [2021-02-21 20:10:46,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45" (1/1) ... [2021-02-21 20:10:46,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45" (1/1) ... [2021-02-21 20:10:46,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:10:46,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:10:46,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:10:46,015 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:10:46,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45" (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 20:10:46,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:10:46,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:10:46,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:10:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2021-02-21 20:10:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-21 20:10:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:10:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:10:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:10:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:10:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:10:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2021-02-21 20:10:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:10:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:10:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:10:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:10:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:10:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-21 20:10:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:10:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:10:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:10:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:10:46,513 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:10:46,513 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 20:10:46,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:46 BoogieIcfgContainer [2021-02-21 20:10:46,515 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:10:46,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:10:46,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:10:46,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:10:46,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:10:45" (1/3) ... [2021-02-21 20:10:46,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297f8a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:46, skipping insertion in model container [2021-02-21 20:10:46,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:10:45" (2/3) ... [2021-02-21 20:10:46,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@297f8a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:10:46, skipping insertion in model container [2021-02-21 20:10:46,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:10:46" (3/3) ... [2021-02-21 20:10:46,525 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1091.c [2021-02-21 20:10:46,531 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:10:46,535 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:10:46,564 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:10:46,607 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:10:46,607 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:10:46,607 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:10:46,607 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:10:46,608 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:10:46,608 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:10:46,608 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:10:46,608 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:10:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-21 20:10:46,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-21 20:10:46,645 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:46,645 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] [2021-02-21 20:10:46,646 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:46,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:46,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1404218773, now seen corresponding path program 1 times [2021-02-21 20:10:46,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:46,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924455115] [2021-02-21 20:10:46,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:46,746 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:46,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:46,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:46,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:46,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:10:46,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:47,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:47,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:47,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 20:10:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:47,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:47,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:47,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:47,041 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:47,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-02-21 20:10:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:10:47,051 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:10:47,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:10:47,062 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 20:10:47,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924455115] [2021-02-21 20:10:47,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:10:47,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:10:47,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864201153] [2021-02-21 20:10:47,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:10:47,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:10:47,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:10:47,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:10:47,091 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 4 states. [2021-02-21 20:10:47,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:10:47,362 INFO L93 Difference]: Finished difference Result 133 states and 159 transitions. [2021-02-21 20:10:47,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:10:47,364 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2021-02-21 20:10:47,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:10:47,376 INFO L225 Difference]: With dead ends: 133 [2021-02-21 20:10:47,377 INFO L226 Difference]: Without dead ends: 70 [2021-02-21 20:10:47,381 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 20:10:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-02-21 20:10:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2021-02-21 20:10:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-02-21 20:10:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2021-02-21 20:10:47,441 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 39 [2021-02-21 20:10:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:10:47,442 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2021-02-21 20:10:47,442 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:10:47,442 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2021-02-21 20:10:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-21 20:10:47,444 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:10:47,445 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 20:10:47,445 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:10:47,446 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:10:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:10:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1425900792, now seen corresponding path program 1 times [2021-02-21 20:10:47,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:10:47,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307860026] [2021-02-21 20:10:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:10:47,451 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:10:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:47,531 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:10:47,628 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:10:47,691 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:10:47,691 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:10:47,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:10:47,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:10:47 BoogieIcfgContainer [2021-02-21 20:10:47,712 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:10:47,714 INFO L168 Benchmark]: Toolchain (without parser) took 2037.70 ms. Allocated memory was 167.8 MB in the beginning and 215.0 MB in the end (delta: 47.2 MB). Free memory was 143.2 MB in the beginning and 180.9 MB in the end (delta: -37.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:47,715 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 167.8 MB. Free memory is still 140.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:10:47,716 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.39 ms. Allocated memory is still 167.8 MB. Free memory was 142.0 MB in the beginning and 131.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:47,717 INFO L168 Benchmark]: Boogie Preprocessor took 44.53 ms. Allocated memory is still 167.8 MB. Free memory was 131.9 MB in the beginning and 130.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:47,718 INFO L168 Benchmark]: RCFGBuilder took 500.66 ms. Allocated memory is still 167.8 MB. Free memory was 130.0 MB in the beginning and 144.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:47,719 INFO L168 Benchmark]: TraceAbstraction took 1194.67 ms. Allocated memory was 167.8 MB in the beginning and 215.0 MB in the end (delta: 47.2 MB). Free memory was 143.5 MB in the beginning and 180.9 MB in the end (delta: -37.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:10:47,723 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 167.8 MB. Free memory is still 140.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.39 ms. Allocated memory is still 167.8 MB. Free memory was 142.0 MB in the beginning and 131.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.53 ms. Allocated memory is still 167.8 MB. Free memory was 131.9 MB in the beginning and 130.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 500.66 ms. Allocated memory is still 167.8 MB. Free memory was 130.0 MB in the beginning and 144.1 MB in the end (delta: -14.0 MB). Peak memory consumption was 20.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1194.67 ms. Allocated memory was 167.8 MB in the beginning and 215.0 MB in the end (delta: 47.2 MB). Free memory was 143.5 MB in the beginning and 180.9 MB in the end (delta: -37.4 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 74]: 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 59, overapproximation of someBinaryArithmeticFLOAToperation at line 68, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L68] float x = 0.0f / 0.0f; [L70] CALL, EXPR ceil_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f [L25] COND FALSE !(j0 < 23) [L45] COND FALSE !(!((ix) < 0x7f800000L)) [L48] return x; [L70] RET, EXPR ceil_float(x) [L70] float res = ceil_float(x); [L73] CALL, EXPR isnan_float(res) [L59] return x != x; [L73] RET, EXPR isnan_float(res) [L73] COND TRUE !isnan_float(res) [L74] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 80 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: 82 SDtfs, 19 SDslu, 56 SDs, 0 SdLazy, 87 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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...