/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:55:33,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:55:33,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:55:33,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:55:33,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:55:33,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:55:33,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:55:33,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:55:33,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:55:33,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:55:33,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:55:33,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:55:33,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:55:33,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:55:33,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:55:33,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:55:33,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:55:33,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:55:33,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:55:33,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:55:33,492 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:55:33,516 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:55:33,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:55:33,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:55:33,520 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:55:33,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:55:33,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:55:33,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:55:33,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:55:33,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:55:33,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:55:33,522 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:55:33,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:55:33,522 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:55:33,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:55:33,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:55:33,524 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:55:33,524 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:55:33,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:55:33,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:33,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:55:33,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:55:33,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:55:33,525 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:55:33,525 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:55:33,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:55:33,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:55:33,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:55:33,982 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:55:33,983 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:55:33,984 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2021-02-24 03:55:34,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812233607/f1d83f03bd2c4a89b5c16d9bf77596db/FLAG69e7a59b3 [2021-02-24 03:55:34,708 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:55:34,709 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2021-02-24 03:55:34,722 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812233607/f1d83f03bd2c4a89b5c16d9bf77596db/FLAG69e7a59b3 [2021-02-24 03:55:35,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/812233607/f1d83f03bd2c4a89b5c16d9bf77596db [2021-02-24 03:55:35,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:55:35,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:55:35,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:35,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:55:35,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:55:35,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:35" (1/1) ... [2021-02-24 03:55:35,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bcf8b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35, skipping insertion in model container [2021-02-24 03:55:35,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:35" (1/1) ... [2021-02-24 03:55:35,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:55:35,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:55:35,505 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_1131a.c[4189,4202] [2021-02-24 03:55:35,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:35,529 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:55:35,594 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_1131a.c[4189,4202] [2021-02-24 03:55:35,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:35,615 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:55:35,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35 WrapperNode [2021-02-24 03:55:35,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:35,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:55:35,618 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:55:35,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:55:35,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35" (1/1) ... [2021-02-24 03:55:35,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35" (1/1) ... [2021-02-24 03:55:35,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35" (1/1) ... [2021-02-24 03:55:35,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35" (1/1) ... [2021-02-24 03:55:35,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35" (1/1) ... [2021-02-24 03:55:35,686 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35" (1/1) ... [2021-02-24 03:55:35,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35" (1/1) ... [2021-02-24 03:55:35,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:55:35,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:55:35,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:55:35,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:55:35,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:55:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:55:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:55:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-24 03:55:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-24 03:55:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-24 03:55:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:55:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:55:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:55:35,805 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:55:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:55:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-24 03:55:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-24 03:55:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-24 03:55:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:55:35,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:55:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:55:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:55:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:55:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-24 03:55:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:55:35,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:55:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:55:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-24 03:55:35,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:55:36,848 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:55:36,849 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-24 03:55:36,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:36 BoogieIcfgContainer [2021-02-24 03:55:36,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:55:36,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:55:36,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:55:36,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:55:36,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:55:35" (1/3) ... [2021-02-24 03:55:36,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759beafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:36, skipping insertion in model container [2021-02-24 03:55:36,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:35" (2/3) ... [2021-02-24 03:55:36,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@759beafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:36, skipping insertion in model container [2021-02-24 03:55:36,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:36" (3/3) ... [2021-02-24 03:55:36,865 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2021-02-24 03:55:36,876 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:55:36,882 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:55:36,903 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:55:36,928 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:55:36,928 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:55:36,928 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:55:36,929 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:55:36,929 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:55:36,929 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:55:36,929 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:55:36,929 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:55:36,950 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2021-02-24 03:55:36,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-24 03:55:36,963 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:36,964 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] [2021-02-24 03:55:36,964 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:36,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:36,971 INFO L82 PathProgramCache]: Analyzing trace with hash 391415441, now seen corresponding path program 1 times [2021-02-24 03:55:36,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:36,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649379441] [2021-02-24 03:55:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:37,052 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:37,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:37,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:37,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:37,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:37,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:37,309 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:37,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-24 03:55:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:37,332 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:37,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:37,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:37,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:37,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-24 03:55:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:37,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:37,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:37,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:37,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:37,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:37,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649379441] [2021-02-24 03:55:37,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:37,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:55:37,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287950507] [2021-02-24 03:55:37,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:55:37,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:37,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:55:37,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:55:37,410 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2021-02-24 03:55:38,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:38,007 INFO L93 Difference]: Finished difference Result 387 states and 476 transitions. [2021-02-24 03:55:38,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:55:38,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-24 03:55:38,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:38,022 INFO L225 Difference]: With dead ends: 387 [2021-02-24 03:55:38,022 INFO L226 Difference]: Without dead ends: 198 [2021-02-24 03:55:38,028 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 [2021-02-24 03:55:38,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-24 03:55:38,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-02-24 03:55:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-02-24 03:55:38,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 224 transitions. [2021-02-24 03:55:38,094 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 224 transitions. Word has length 56 [2021-02-24 03:55:38,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:38,095 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 224 transitions. [2021-02-24 03:55:38,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:55:38,095 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 224 transitions. [2021-02-24 03:55:38,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-24 03:55:38,099 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:38,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:55:38,100 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:55:38,100 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:38,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:38,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2074926727, now seen corresponding path program 1 times [2021-02-24 03:55:38,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:38,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3524883] [2021-02-24 03:55:38,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:38,105 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:38,251 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:38,425 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:38,496 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:55:38,496 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:55:38,498 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:55:38,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:55:38 BoogieIcfgContainer [2021-02-24 03:55:38,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:55:38,530 INFO L168 Benchmark]: Toolchain (without parser) took 3460.54 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 131.9 MB in the beginning and 103.7 MB in the end (delta: 28.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:38,531 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:55:38,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.98 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 117.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:38,535 INFO L168 Benchmark]: Boogie Preprocessor took 85.56 ms. Allocated memory is still 155.2 MB. Free memory was 117.8 MB in the beginning and 115.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:38,537 INFO L168 Benchmark]: RCFGBuilder took 1150.33 ms. Allocated memory is still 155.2 MB. Free memory was 115.3 MB in the beginning and 107.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:38,538 INFO L168 Benchmark]: TraceAbstraction took 1668.83 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 106.8 MB in the beginning and 103.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 34.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:38,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory is still 128.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 531.98 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 117.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.56 ms. Allocated memory is still 155.2 MB. Free memory was 117.8 MB in the beginning and 115.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1150.33 ms. Allocated memory is still 155.2 MB. Free memory was 115.3 MB in the beginning and 107.3 MB in the end (delta: 8.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1668.83 ms. Allocated memory was 155.2 MB in the beginning and 186.6 MB in the end (delta: 31.5 MB). Free memory was 106.8 MB in the beginning and 103.7 MB in the end (delta: 3.0 MB). Peak memory consumption was 34.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: 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 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 43, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L185] CALL isfinite_double(x) [L166] __int32_t hx; [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L185] RET isfinite_double(x) [L185] COND TRUE isfinite_double(x) [L187] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x [L191] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 212 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 37 SDslu, 175 SDs, 0 SdLazy, 245 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=205occurred 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...