/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:34:38,885 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:34:38,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:34:38,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:34:38,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:34:38,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:34:38,976 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:34:38,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:34:38,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:34:38,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:34:38,997 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:34:39,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:34:39,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:34:39,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:34:39,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:34:39,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:34:39,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:34:39,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:34:39,052 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:34:39,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:34:39,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:34:39,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:34:39,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:34:39,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:34:39,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:34:39,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:34:39,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:34:39,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:34:39,058 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:34:39,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:34:39,059 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:34:39,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:34:39,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:34:39,060 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:34:39,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:34:39,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:34:39,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:34:39,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:34:39,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:34:39,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:34:39,061 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:34:39,463 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:34:39,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:34:39,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:34:39,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:34:39,491 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:34:39,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2021-02-23 22:34:39,568 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26038fec5/d5efbe6c60c94fb58d9ac19e6de8157a/FLAGc40f36848 [2021-02-23 22:34:40,129 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:34:40,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2021-02-23 22:34:40,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26038fec5/d5efbe6c60c94fb58d9ac19e6de8157a/FLAGc40f36848 [2021-02-23 22:34:40,486 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/26038fec5/d5efbe6c60c94fb58d9ac19e6de8157a [2021-02-23 22:34:40,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:34:40,499 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:34:40,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:40,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:34:40,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:34:40,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:40" (1/1) ... [2021-02-23 22:34:40,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1809e55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40, skipping insertion in model container [2021-02-23 22:34:40,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:40" (1/1) ... [2021-02-23 22:34:40,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:34:40,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:34:40,745 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_1130a.c[4166,4179] [2021-02-23 22:34:40,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:40,757 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:34:40,846 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_1130a.c[4166,4179] [2021-02-23 22:34:40,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:40,875 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:34:40,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40 WrapperNode [2021-02-23 22:34:40,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:40,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:34:40,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:34:40,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:34:40,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40" (1/1) ... [2021-02-23 22:34:40,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40" (1/1) ... [2021-02-23 22:34:40,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40" (1/1) ... [2021-02-23 22:34:40,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40" (1/1) ... [2021-02-23 22:34:40,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40" (1/1) ... [2021-02-23 22:34:40,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40" (1/1) ... [2021-02-23 22:34:40,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40" (1/1) ... [2021-02-23 22:34:40,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:34:40,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:34:40,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:34:40,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:34:40,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:34:41,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:34:41,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:34:41,066 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:34:41,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 22:34:41,067 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-23 22:34:41,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-23 22:34:41,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:34:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:34:41,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:34:41,069 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:34:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:34:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 22:34:41,070 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 22:34:41,071 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-23 22:34:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:34:41,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:34:41,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:34:41,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:34:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:34:41,075 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-23 22:34:41,078 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:34:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:34:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:34:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-23 22:34:41,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:34:41,979 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:34:41,979 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-23 22:34:41,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:41 BoogieIcfgContainer [2021-02-23 22:34:41,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:34:41,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:34:41,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:34:41,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:34:41,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:34:40" (1/3) ... [2021-02-23 22:34:41,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1258e1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:41, skipping insertion in model container [2021-02-23 22:34:41,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:40" (2/3) ... [2021-02-23 22:34:41,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1258e1e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:41, skipping insertion in model container [2021-02-23 22:34:41,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:41" (3/3) ... [2021-02-23 22:34:41,990 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-02-23 22:34:41,997 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:34:42,002 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:34:42,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:34:42,047 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:34:42,047 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:34:42,047 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:34:42,047 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:34:42,047 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:34:42,048 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:34:42,048 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:34:42,048 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:34:42,067 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2021-02-23 22:34:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-02-23 22:34:42,080 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:42,081 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] [2021-02-23 22:34:42,081 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:42,088 INFO L82 PathProgramCache]: Analyzing trace with hash 783378974, now seen corresponding path program 1 times [2021-02-23 22:34:42,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:42,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292117414] [2021-02-23 22:34:42,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:42,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:42,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:42,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:42,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:42,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:42,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:42,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-23 22:34:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:42,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:42,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:42,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:42,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:42,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 22:34:42,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292117414] [2021-02-23 22:34:42,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:42,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:34:42,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991769376] [2021-02-23 22:34:42,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:34:42,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:42,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:34:42,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:34:42,498 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 4 states. [2021-02-23 22:34:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:43,313 INFO L93 Difference]: Finished difference Result 388 states and 478 transitions. [2021-02-23 22:34:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:34:43,315 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2021-02-23 22:34:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:43,327 INFO L225 Difference]: With dead ends: 388 [2021-02-23 22:34:43,328 INFO L226 Difference]: Without dead ends: 202 [2021-02-23 22:34:43,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 22:34:43,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-02-23 22:34:43,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2021-02-23 22:34:43,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2021-02-23 22:34:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 229 transitions. [2021-02-23 22:34:43,397 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 229 transitions. Word has length 51 [2021-02-23 22:34:43,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:43,397 INFO L480 AbstractCegarLoop]: Abstraction has 202 states and 229 transitions. [2021-02-23 22:34:43,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:34:43,398 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 229 transitions. [2021-02-23 22:34:43,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-02-23 22:34:43,401 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:43,401 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] [2021-02-23 22:34:43,401 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:34:43,402 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:43,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1917323870, now seen corresponding path program 1 times [2021-02-23 22:34:43,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:43,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623140817] [2021-02-23 22:34:43,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:43,528 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:43,589 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:43,628 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:34:43,628 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:34:43,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:34:43,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:43 BoogieIcfgContainer [2021-02-23 22:34:43,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:34:43,697 INFO L168 Benchmark]: Toolchain (without parser) took 3206.32 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 127.7 MB in the beginning and 102.6 MB in the end (delta: 25.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:43,698 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:34:43,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.25 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 113.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:43,700 INFO L168 Benchmark]: Boogie Preprocessor took 63.62 ms. Allocated memory is still 152.0 MB. Free memory was 113.1 MB in the beginning and 110.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:43,701 INFO L168 Benchmark]: RCFGBuilder took 1040.34 ms. Allocated memory is still 152.0 MB. Free memory was 110.5 MB in the beginning and 105.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:43,702 INFO L168 Benchmark]: TraceAbstraction took 1712.21 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 105.0 MB in the beginning and 102.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:43,705 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 375.25 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 113.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.62 ms. Allocated memory is still 152.0 MB. Free memory was 113.1 MB in the beginning and 110.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1040.34 ms. Allocated memory is still 152.0 MB. Free memory was 110.5 MB in the beginning and 105.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1712.21 ms. Allocated memory was 152.0 MB in the beginning and 182.5 MB in the end (delta: 30.4 MB). Free memory was 105.0 MB in the beginning and 102.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 193]: 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 bitwiseAnd at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967310, \old(Zero_fmod)=4294967308, \old(Zero_fmod)=4294967302, one_fmod=1, Zero_fmod={9:0}] [L184] double x = 0.0; VAL [one_fmod=1, x=0, Zero_fmod={9:0}] [L185] double y = __VERIFIER_nondet_double(); VAL [__VERIFIER_nondet_double()=4294967300, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L187] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L189] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=4294967300, one_fmod=1, Zero_fmod={9:0}] [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967300, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L27] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=4294967300, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L31] ew_u.value = (x) VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L32] EXPR ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, ew_u.parts.msw=4294967294, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L32] (hx) = ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, ew_u.parts.msw=4294967294, hx=-2, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L33] EXPR ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, ew_u.parts.lsw=4294967296, hx=-2, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L33] (lx) = ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, ew_u.parts.lsw=4294967296, hx=-2, lx=4294967296, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L36] ieee_double_shape_type ew_u; VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, hx=-2, lx=4294967296, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L37] ew_u.value = (y) VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, hx=-2, lx=4294967296, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L38] EXPR ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, ew_u.parts.msw=0, hx=-2, lx=4294967296, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L38] (hy) = ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, ew_u.parts.msw=0, hx=-2, hy=0, lx=4294967296, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L39] EXPR ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, ew_u.parts.lsw=4294967299, hx=-2, hy=0, lx=4294967296, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L39] (ly) = ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, ew_u.parts.lsw=4294967299, hx=-2, hy=0, lx=4294967296, ly=4294967299, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L41] sx = hx & 0x80000000 VAL [\old(x)=0, \old(y)=4294967300, hx=-2, hy=0, lx=4294967296, ly=4294967299, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L42] hx ^= sx VAL [\old(x)=0, \old(y)=4294967300, hy=0, lx=4294967296, ly=4294967299, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L43] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=4294967300, lx=4294967296, ly=4294967299, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) VAL [\old(x)=0, \old(y)=4294967300, hx=2146435072, lx=4294967296, ly=4294967299, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L47] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967300, hx=2146435072, lx=4294967296, ly=4294967299, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L189] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=4294967309, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L189] double res = fmod_double(x, y); VAL [fmod_double(x, y)=4294967309, one_fmod=1, res=4294967309, x=0, y=4294967300, Zero_fmod={9:0}] [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=4294967309, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967300, Zero_fmod={9:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) VAL [one_fmod=1, res=4294967309, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967300, Zero_fmod={9:0}] [L193] reach_error() VAL [one_fmod=1, res=4294967309, x=0, y=4294967300, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 45 SDslu, 177 SDs, 0 SdLazy, 251 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=210occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 5050 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...