/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-b7b32d2 [2021-02-22 01:31:24,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:24,253 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:24,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:24,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:31:24,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:31:24,327 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:31:24,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:31:24,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:31:24,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:31:24,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:31:24,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:31:24,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:31:24,350 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:31:24,351 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:31:24,352 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:31:24,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:31:24,365 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:31:24,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:31:24,367 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:31:24,368 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:31:24,387 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:24,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:24,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:24,389 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:24,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:24,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:24,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:24,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:24,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:24,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:24,393 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:24,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:24,393 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:24,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:24,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:24,394 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:24,394 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:24,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:24,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:24,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:24,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:24,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:24,395 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:24,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:24,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:24,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:24,836 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:24,838 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:24,839 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:24,840 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2021-02-22 01:31:24,927 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4b128d9/9a205ecf706d42a094778111d1a923cd/FLAG16af11749 [2021-02-22 01:31:25,609 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:25,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2021-02-22 01:31:25,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4b128d9/9a205ecf706d42a094778111d1a923cd/FLAG16af11749 [2021-02-22 01:31:25,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f4b128d9/9a205ecf706d42a094778111d1a923cd [2021-02-22 01:31:25,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:25,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:25,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:25,961 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:25,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:25,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41ae3c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:25, skipping insertion in model container [2021-02-22 01:31:25,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:25" (1/1) ... [2021-02-22 01:31:25,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:26,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:26,240 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] [2021-02-22 01:31:26,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:26,254 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:26,305 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] [2021-02-22 01:31:26,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:26,328 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:26,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26 WrapperNode [2021-02-22 01:31:26,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:26,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:26,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:26,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:26,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26" (1/1) ... [2021-02-22 01:31:26,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26" (1/1) ... [2021-02-22 01:31:26,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26" (1/1) ... [2021-02-22 01:31:26,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26" (1/1) ... [2021-02-22 01:31:26,374 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26" (1/1) ... [2021-02-22 01:31:26,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26" (1/1) ... [2021-02-22 01:31:26,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26" (1/1) ... [2021-02-22 01:31:26,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:26,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:26,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:26,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:26,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26" (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 [2021-02-22 01:31:26,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-22 01:31:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-22 01:31:26,502 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-22 01:31:26,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:26,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-22 01:31:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-22 01:31:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-22 01:31:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:26,504 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-22 01:31:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:26,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-22 01:31:26,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:27,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:27,311 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-22 01:31:27,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:27 BoogieIcfgContainer [2021-02-22 01:31:27,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:27,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:27,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:27,319 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:27,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:25" (1/3) ... [2021-02-22 01:31:27,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14895187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:27, skipping insertion in model container [2021-02-22 01:31:27,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:26" (2/3) ... [2021-02-22 01:31:27,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14895187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:27, skipping insertion in model container [2021-02-22 01:31:27,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:27" (3/3) ... [2021-02-22 01:31:27,323 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2021-02-22 01:31:27,330 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:27,335 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:27,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:27,379 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:27,379 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:27,379 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:27,379 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:27,379 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:27,380 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:27,380 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:27,380 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:27,401 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2021-02-22 01:31:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-22 01:31:27,414 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:27,415 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] [2021-02-22 01:31:27,416 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:27,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:27,422 INFO L82 PathProgramCache]: Analyzing trace with hash 391415441, now seen corresponding path program 1 times [2021-02-22 01:31:27,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:27,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100624501] [2021-02-22 01:31:27,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:27,524 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:27,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:27,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:27,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:31:27,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:27,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-22 01:31:27,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:27,874 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,875 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,876 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:27,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:27,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:31:27,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100624501] [2021-02-22 01:31:27,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:27,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:27,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635904965] [2021-02-22 01:31:27,922 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:27,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:27,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:27,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:27,940 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2021-02-22 01:31:28,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:28,479 INFO L93 Difference]: Finished difference Result 387 states and 476 transitions. [2021-02-22 01:31:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:28,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-22 01:31:28,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:28,494 INFO L225 Difference]: With dead ends: 387 [2021-02-22 01:31:28,494 INFO L226 Difference]: Without dead ends: 198 [2021-02-22 01:31:28,500 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 [2021-02-22 01:31:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-22 01:31:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-02-22 01:31:28,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-02-22 01:31:28,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 224 transitions. [2021-02-22 01:31:28,565 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 224 transitions. Word has length 56 [2021-02-22 01:31:28,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:28,565 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 224 transitions. [2021-02-22 01:31:28,566 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 224 transitions. [2021-02-22 01:31:28,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-22 01:31:28,569 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:28,569 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] [2021-02-22 01:31:28,570 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:28,570 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:28,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:28,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2074926727, now seen corresponding path program 1 times [2021-02-22 01:31:28,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:28,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99845358] [2021-02-22 01:31:28,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:28,574 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:28,689 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:28,781 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:28,828 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:28,828 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:28,829 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:28,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:28 BoogieIcfgContainer [2021-02-22 01:31:28,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:28,852 INFO L168 Benchmark]: Toolchain (without parser) took 2902.64 ms. Allocated memory was 163.6 MB in the beginning and 203.4 MB in the end (delta: 39.8 MB). Free memory was 138.9 MB in the beginning and 176.2 MB in the end (delta: -37.4 MB). Peak memory consumption was 82.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:28,853 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:28,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.25 ms. Allocated memory is still 163.6 MB. Free memory was 137.7 MB in the beginning and 124.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:28,855 INFO L168 Benchmark]: Boogie Preprocessor took 63.24 ms. Allocated memory is still 163.6 MB. Free memory was 124.6 MB in the beginning and 122.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:28,856 INFO L168 Benchmark]: RCFGBuilder took 919.87 ms. Allocated memory is still 163.6 MB. Free memory was 122.1 MB in the beginning and 112.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:28,856 INFO L168 Benchmark]: TraceAbstraction took 1535.28 ms. Allocated memory was 163.6 MB in the beginning and 203.4 MB in the end (delta: 39.8 MB). Free memory was 112.3 MB in the beginning and 176.2 MB in the end (delta: -63.9 MB). Peak memory consumption was 56.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:28,860 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 163.6 MB. Free memory is still 137.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 368.25 ms. Allocated memory is still 163.6 MB. Free memory was 137.7 MB in the beginning and 124.6 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.24 ms. Allocated memory is still 163.6 MB. Free memory was 124.6 MB in the beginning and 122.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 919.87 ms. Allocated memory is still 163.6 MB. Free memory was 122.1 MB in the beginning and 112.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1535.28 ms. Allocated memory was 163.6 MB in the beginning and 203.4 MB in the end (delta: 39.8 MB). Free memory was 112.3 MB in the beginning and 176.2 MB in the end (delta: -63.9 MB). Peak memory consumption was 56.7 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: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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, 0.3s 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...