/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:31:26,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:26,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:26,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:26,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:31:26,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:31:26,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:31:26,271 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:31:26,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:31:26,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:31:26,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:31:26,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:31:26,302 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:31:26,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:31:26,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:31:26,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:31:26,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:31:26,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:31:26,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:31:26,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:31:26,332 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 01:31:26,359 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:26,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:26,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:26,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:26,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:26,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:26,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:26,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:26,366 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:26,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:26,368 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:26,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:26,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:26,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:26,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:26,370 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:26,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:26,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:26,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:26,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:26,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:26,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:26,372 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:26,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:26,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:26,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:26,873 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:26,875 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:26,876 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:26,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-22 01:31:26,954 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a5d74b8b/875fbfbdc1ee4d27b8f51b015096127b/FLAG49d8bf34f [2021-02-22 01:31:27,573 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:27,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-22 01:31:27,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a5d74b8b/875fbfbdc1ee4d27b8f51b015096127b/FLAG49d8bf34f [2021-02-22 01:31:27,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a5d74b8b/875fbfbdc1ee4d27b8f51b015096127b [2021-02-22 01:31:27,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:27,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:27,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:27,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:27,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:27,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:27" (1/1) ... [2021-02-22 01:31:27,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dc177f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:27, skipping insertion in model container [2021-02-22 01:31:27,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:27" (1/1) ... [2021-02-22 01:31:27,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:27,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:28,168 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_1131b.c[4119,4132] [2021-02-22 01:31:28,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:28,181 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:28,271 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_1131b.c[4119,4132] [2021-02-22 01:31:28,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:28,306 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:28,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28 WrapperNode [2021-02-22 01:31:28,307 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:28,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:28,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:28,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:28,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28" (1/1) ... [2021-02-22 01:31:28,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28" (1/1) ... [2021-02-22 01:31:28,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28" (1/1) ... [2021-02-22 01:31:28,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28" (1/1) ... [2021-02-22 01:31:28,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28" (1/1) ... [2021-02-22 01:31:28,381 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28" (1/1) ... [2021-02-22 01:31:28,384 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28" (1/1) ... [2021-02-22 01:31:28,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:28,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:28,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:28,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:28,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28" (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 01:31:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:28,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-22 01:31:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-22 01:31:28,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:28,498 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-22 01:31:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-22 01:31:28,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:28,500 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-22 01:31:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-22 01:31:28,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:29,366 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:29,367 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-22 01:31:29,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:29 BoogieIcfgContainer [2021-02-22 01:31:29,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:29,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:29,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:29,376 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:29,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:27" (1/3) ... [2021-02-22 01:31:29,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a0725a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:29, skipping insertion in model container [2021-02-22 01:31:29,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:28" (2/3) ... [2021-02-22 01:31:29,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37a0725a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:29, skipping insertion in model container [2021-02-22 01:31:29,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:29" (3/3) ... [2021-02-22 01:31:29,380 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-02-22 01:31:29,389 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:29,395 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:29,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:29,444 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:29,444 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:29,444 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:29,444 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:29,444 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:29,445 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:29,445 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:29,445 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2021-02-22 01:31:29,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-22 01:31:29,484 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:29,485 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 01:31:29,486 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:29,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:29,493 INFO L82 PathProgramCache]: Analyzing trace with hash 2046356497, now seen corresponding path program 1 times [2021-02-22 01:31:29,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:29,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679605864] [2021-02-22 01:31:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:29,606 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:29,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:29,776 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:29,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:29,779 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:29,780 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:29,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:29,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:29,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:29,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:29,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-22 01:31:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:29,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:29,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:29,922 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:29,923 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:29,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-02-22 01:31:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:29,936 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:29,937 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:29,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:29,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:29,953 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 01:31:29,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679605864] [2021-02-22 01:31:29,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:29,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:29,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369622689] [2021-02-22 01:31:29,965 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:29,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:29,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:29,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:29,985 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2021-02-22 01:31:31,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:31,008 INFO L93 Difference]: Finished difference Result 387 states and 476 transitions. [2021-02-22 01:31:31,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:31,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2021-02-22 01:31:31,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:31,024 INFO L225 Difference]: With dead ends: 387 [2021-02-22 01:31:31,024 INFO L226 Difference]: Without dead ends: 198 [2021-02-22 01:31:31,030 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 01:31:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-02-22 01:31:31,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-02-22 01:31:31,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2021-02-22 01:31:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 224 transitions. [2021-02-22 01:31:31,106 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 224 transitions. Word has length 56 [2021-02-22 01:31:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:31,107 INFO L480 AbstractCegarLoop]: Abstraction has 198 states and 224 transitions. [2021-02-22 01:31:31,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 224 transitions. [2021-02-22 01:31:31,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-02-22 01:31:31,111 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:31,111 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 01:31:31,111 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:31,112 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:31,113 INFO L82 PathProgramCache]: Analyzing trace with hash -622845468, now seen corresponding path program 1 times [2021-02-22 01:31:31,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:31,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292411620] [2021-02-22 01:31:31,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:31,118 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:31,247 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:31,384 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:31,436 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:31,437 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:31,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:31,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:31 BoogieIcfgContainer [2021-02-22 01:31:31,461 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:31,463 INFO L168 Benchmark]: Toolchain (without parser) took 3564.08 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 127.1 MB in the beginning and 134.9 MB in the end (delta: -7.7 MB). Peak memory consumption was 32.3 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:31,464 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:31,465 INFO L168 Benchmark]: CACSL2BoogieTranslator took 392.45 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 112.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:31,466 INFO L168 Benchmark]: Boogie Preprocessor took 80.45 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 110.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:31,467 INFO L168 Benchmark]: RCFGBuilder took 979.21 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 98.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:31,468 INFO L168 Benchmark]: TraceAbstraction took 2089.35 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 97.8 MB in the beginning and 134.9 MB in the end (delta: -37.1 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:31,471 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 124.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 392.45 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 112.9 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.45 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 110.6 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 979.21 ms. Allocated memory is still 151.0 MB. Free memory was 110.6 MB in the beginning and 98.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2089.35 ms. Allocated memory was 151.0 MB in the beginning and 190.8 MB in the end (delta: 39.8 MB). Free memory was 97.8 MB in the beginning and 134.9 MB in the end (delta: -37.1 MB). Peak memory consumption was 2.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: 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 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L182] CALL isfinite_double(x) [L163] __int32_t hx; [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L182] RET isfinite_double(x) [L182] COND TRUE isfinite_double(x) [L184] CALL, EXPR fmod_double(x, y) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); [L184] RET, EXPR fmod_double(x, y) [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x [L188] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 208 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 1.0s, 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, 0.5s 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...