/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/double_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:36:51,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:36:51,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:36:51,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 17:36:51,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 17:36:51,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 17:36:51,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 17:36:51,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 17:36:51,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 17:36:51,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 17:36:51,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 17:36:51,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 17:36:51,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:36:51,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:36:51,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:36:51,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:36:51,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:36:51,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:36:51,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:36:51,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:36:51,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:36:51,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:36:51,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:36:51,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:36:51,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:36:52,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:36:52,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:36:52,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:36:52,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:36:52,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:36:52,037 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:36:52,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:36:52,040 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:36:52,040 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:36:52,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:36:52,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:36:52,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:36:52,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:36:52,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:36:52,042 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:36:52,042 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:36:52,042 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:36:52,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:36:52,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:36:52,043 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:36:52,043 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:36:52,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:36:52,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:36:52,044 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:36:52,044 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:36:52,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:36:52,044 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:36:52,423 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:36:52,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:36:52,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:36:52,463 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:36:52,464 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:36:52,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2021-02-23 17:36:52,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb821b103/199e117a85894833996b07319fecfeff/FLAG169f8a779 [2021-02-23 17:36:53,225 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:36:53,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2021-02-23 17:36:53,238 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb821b103/199e117a85894833996b07319fecfeff/FLAG169f8a779 [2021-02-23 17:36:53,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb821b103/199e117a85894833996b07319fecfeff [2021-02-23 17:36:53,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:36:53,594 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:36:53,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:36:53,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:36:53,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:36:53,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:36:53" (1/1) ... [2021-02-23 17:36:53,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3134b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:53, skipping insertion in model container [2021-02-23 17:36:53,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:36:53" (1/1) ... [2021-02-23 17:36:53,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:36:53,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:36:53,973 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c[3437,3450] [2021-02-23 17:36:53,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:36:53,991 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:36:54,032 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c[3437,3450] [2021-02-23 17:36:54,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:36:54,049 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:36:54,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54 WrapperNode [2021-02-23 17:36:54,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:36:54,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:36:54,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:36:54,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:36:54,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54" (1/1) ... [2021-02-23 17:36:54,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54" (1/1) ... [2021-02-23 17:36:54,119 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54" (1/1) ... [2021-02-23 17:36:54,119 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54" (1/1) ... [2021-02-23 17:36:54,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54" (1/1) ... [2021-02-23 17:36:54,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54" (1/1) ... [2021-02-23 17:36:54,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54" (1/1) ... [2021-02-23 17:36:54,178 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:36:54,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:36:54,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:36:54,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:36:54,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54" (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 [2021-02-23 17:36:54,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:36:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:36:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:36:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 17:36:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2021-02-23 17:36:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-23 17:36:54,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:36:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:36:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:36:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:36:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:36:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 17:36:54,316 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 17:36:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2021-02-23 17:36:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:36:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:36:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:36:54,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:36:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:36:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-23 17:36:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:36:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:36:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:36:54,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:36:54,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:36:54,989 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-23 17:36:54,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:36:54 BoogieIcfgContainer [2021-02-23 17:36:54,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:36:54,994 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:36:54,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:36:55,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:36:55,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:36:53" (1/3) ... [2021-02-23 17:36:55,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf16bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:36:55, skipping insertion in model container [2021-02-23 17:36:55,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:36:54" (2/3) ... [2021-02-23 17:36:55,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf16bfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:36:55, skipping insertion in model container [2021-02-23 17:36:55,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:36:54" (3/3) ... [2021-02-23 17:36:55,010 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2021-02-23 17:36:55,018 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:36:55,024 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:36:55,044 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:36:55,070 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:36:55,070 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:36:55,071 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:36:55,071 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:36:55,071 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:36:55,071 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:36:55,071 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:36:55,071 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:36:55,097 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2021-02-23 17:36:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-02-23 17:36:55,114 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:36:55,115 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] [2021-02-23 17:36:55,116 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:36:55,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:36:55,135 INFO L82 PathProgramCache]: Analyzing trace with hash 1224318980, now seen corresponding path program 1 times [2021-02-23 17:36:55,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:36:55,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13628622] [2021-02-23 17:36:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:36:55,249 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:36:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:36:55,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:36:55,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:36:55,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:36:55,399 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:36:55,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:36:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:36:55,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:36:55,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:36:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 17:36:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:36:55,529 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:36:55,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:36:55,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:36:55,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:36:55,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-23 17:36:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:36:55,547 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:36:55,548 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:36:55,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:36:55,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:36:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 17:36:55,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13628622] [2021-02-23 17:36:55,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:36:55,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:36:55,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109056552] [2021-02-23 17:36:55,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:36:55,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:36:55,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:36:55,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:36:55,611 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2021-02-23 17:36:56,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:36:56,131 INFO L93 Difference]: Finished difference Result 299 states and 360 transitions. [2021-02-23 17:36:56,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:36:56,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2021-02-23 17:36:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:36:56,146 INFO L225 Difference]: With dead ends: 299 [2021-02-23 17:36:56,146 INFO L226 Difference]: Without dead ends: 158 [2021-02-23 17:36:56,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 17:36:56,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-02-23 17:36:56,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-02-23 17:36:56,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2021-02-23 17:36:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 177 transitions. [2021-02-23 17:36:56,227 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 177 transitions. Word has length 52 [2021-02-23 17:36:56,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:36:56,228 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 177 transitions. [2021-02-23 17:36:56,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:36:56,228 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 177 transitions. [2021-02-23 17:36:56,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-02-23 17:36:56,232 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:36:56,232 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 17:36:56,233 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:36:56,233 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:36:56,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:36:56,234 INFO L82 PathProgramCache]: Analyzing trace with hash -573843228, now seen corresponding path program 1 times [2021-02-23 17:36:56,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:36:56,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [425645766] [2021-02-23 17:36:56,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:36:56,238 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:36:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:36:56,340 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:36:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:36:56,428 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:36:56,494 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:36:56,495 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:36:56,497 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:36:56,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:36:56 BoogieIcfgContainer [2021-02-23 17:36:56,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:36:56,530 INFO L168 Benchmark]: Toolchain (without parser) took 2970.95 ms. Allocated memory was 175.1 MB in the beginning and 212.9 MB in the end (delta: 37.7 MB). Free memory was 132.9 MB in the beginning and 103.4 MB in the end (delta: 29.4 MB). Peak memory consumption was 68.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:56,531 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 175.1 MB. Free memory is still 149.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:36:56,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.43 ms. Allocated memory is still 175.1 MB. Free memory was 158.7 MB in the beginning and 146.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:56,533 INFO L168 Benchmark]: Boogie Preprocessor took 127.25 ms. Allocated memory is still 175.1 MB. Free memory was 146.5 MB in the beginning and 157.3 MB in the end (delta: -10.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:56,534 INFO L168 Benchmark]: RCFGBuilder took 809.50 ms. Allocated memory is still 175.1 MB. Free memory was 157.3 MB in the beginning and 120.3 MB in the end (delta: 37.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:56,535 INFO L168 Benchmark]: TraceAbstraction took 1531.43 ms. Allocated memory was 175.1 MB in the beginning and 212.9 MB in the end (delta: 37.7 MB). Free memory was 120.1 MB in the beginning and 103.4 MB in the end (delta: 16.6 MB). Peak memory consumption was 55.2 MB. Max. memory is 8.0 GB. [2021-02-23 17:36:56,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 175.1 MB. Free memory is still 149.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 450.43 ms. Allocated memory is still 175.1 MB. Free memory was 158.7 MB in the beginning and 146.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 127.25 ms. Allocated memory is still 175.1 MB. Free memory was 146.5 MB in the beginning and 157.3 MB in the end (delta: -10.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 809.50 ms. Allocated memory is still 175.1 MB. Free memory was 157.3 MB in the beginning and 120.3 MB in the end (delta: 37.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1531.43 ms. Allocated memory was 175.1 MB in the beginning and 212.9 MB in the end (delta: 37.7 MB). Free memory was 120.1 MB in the beginning and 103.4 MB in the end (delta: 16.6 MB). Peak memory consumption was 55.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 162]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 146, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 143. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L157] double x = 1.0 / 0.0; [L158] CALL, EXPR __ieee754_sqrt(x) [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; [L158] RET, EXPR __ieee754_sqrt(x) [L158] double res = __ieee754_sqrt(x); [L161] CALL, EXPR isinf_double(res) [L136] __int32_t hx, lx; [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L161] RET, EXPR isinf_double(res) [L161] COND TRUE !isinf_double(res) [L162] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 172 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 37 SDslu, 140 SDs, 0 SdLazy, 184 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred 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...