/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_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:33:39,307 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:33:39,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:33:39,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:33:39,489 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 22:33:39,510 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:33:39,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:33:39,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:33:39,515 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:33:39,515 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:33:39,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:33:39,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:33:39,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:33:39,516 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:33:39,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:33:39,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:33:39,517 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:33:39,518 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:33:39,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:33:39,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:33:39,519 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:33:39,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:33:39,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:33:39,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:33:39,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:33:39,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:33:39,520 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:33:39,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:33:39,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:33:39,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:33:39,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:33:39,945 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:33:39,946 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:33:39,947 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2021-02-23 22:33:40,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1580295d2/46324139ae9d4222b3c2abb516e0c1e1/FLAGa11febd62 [2021-02-23 22:33:40,608 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:33:40,609 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0720.c [2021-02-23 22:33:40,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1580295d2/46324139ae9d4222b3c2abb516e0c1e1/FLAGa11febd62 [2021-02-23 22:33:40,979 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1580295d2/46324139ae9d4222b3c2abb516e0c1e1 [2021-02-23 22:33:40,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:33:40,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:33:40,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:33:40,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:33:41,000 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:33:41,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:33:40" (1/1) ... [2021-02-23 22:33:41,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10c71473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41, skipping insertion in model container [2021-02-23 22:33:41,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:33:40" (1/1) ... [2021-02-23 22:33:41,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:33:41,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:33:41,254 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_0720.c[3072,3085] [2021-02-23 22:33:41,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:33:41,270 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:33:41,337 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_0720.c[3072,3085] [2021-02-23 22:33:41,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:33:41,374 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:33:41,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41 WrapperNode [2021-02-23 22:33:41,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:33:41,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:33:41,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:33:41,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:33:41,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41" (1/1) ... [2021-02-23 22:33:41,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41" (1/1) ... [2021-02-23 22:33:41,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41" (1/1) ... [2021-02-23 22:33:41,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41" (1/1) ... [2021-02-23 22:33:41,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41" (1/1) ... [2021-02-23 22:33:41,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41" (1/1) ... [2021-02-23 22:33:41,557 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41" (1/1) ... [2021-02-23 22:33:41,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:33:41,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:33:41,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:33:41,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:33:41,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41" (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 22:33:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:33:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:33:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:33:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 22:33:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2021-02-23 22:33:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:33:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:33:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:33:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:33:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:33:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-23 22:33:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 22:33:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2021-02-23 22:33:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:33:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:33:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:33:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:33:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:33:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:33:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:33:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:33:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:33:42,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:33:42,471 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-23 22:33:42,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:33:42 BoogieIcfgContainer [2021-02-23 22:33:42,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:33:42,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:33:42,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:33:42,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:33:42,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:33:40" (1/3) ... [2021-02-23 22:33:42,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ad1168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:33:42, skipping insertion in model container [2021-02-23 22:33:42,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:33:41" (2/3) ... [2021-02-23 22:33:42,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ad1168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:33:42, skipping insertion in model container [2021-02-23 22:33:42,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:33:42" (3/3) ... [2021-02-23 22:33:42,482 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0720.c [2021-02-23 22:33:42,489 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:33:42,495 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:33:42,513 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:33:42,536 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:33:42,536 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:33:42,536 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:33:42,536 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:33:42,536 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:33:42,537 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:33:42,537 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:33:42,537 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:33:42,554 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2021-02-23 22:33:42,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 22:33:42,565 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:33:42,566 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] [2021-02-23 22:33:42,566 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:33:42,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:33:42,573 INFO L82 PathProgramCache]: Analyzing trace with hash -577016850, now seen corresponding path program 1 times [2021-02-23 22:33:42,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:33:42,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788440759] [2021-02-23 22:33:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:33:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:33:42,762 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:42,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:42,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:42,766 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:42,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:33:42,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:33:42,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:42,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 22:33:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:33:42,916 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:42,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:42,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:42,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:42,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-02-23 22:33:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:33:42,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:33:42,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:33:42,977 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 22:33:42,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788440759] [2021-02-23 22:33:42,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:33:42,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:33:42,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801467973] [2021-02-23 22:33:42,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:33:42,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:33:42,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:33:43,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:33:43,002 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2021-02-23 22:33:43,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:33:43,415 INFO L93 Difference]: Finished difference Result 267 states and 323 transitions. [2021-02-23 22:33:43,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:33:43,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-23 22:33:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:33:43,429 INFO L225 Difference]: With dead ends: 267 [2021-02-23 22:33:43,430 INFO L226 Difference]: Without dead ends: 142 [2021-02-23 22:33:43,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 22:33:43,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-02-23 22:33:43,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2021-02-23 22:33:43,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2021-02-23 22:33:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 161 transitions. [2021-02-23 22:33:43,498 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 161 transitions. Word has length 46 [2021-02-23 22:33:43,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:33:43,498 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 161 transitions. [2021-02-23 22:33:43,498 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:33:43,499 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 161 transitions. [2021-02-23 22:33:43,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-23 22:33:43,501 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:33:43,501 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] [2021-02-23 22:33:43,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:33:43,502 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:33:43,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:33:43,503 INFO L82 PathProgramCache]: Analyzing trace with hash -798807434, now seen corresponding path program 1 times [2021-02-23 22:33:43,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:33:43,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1686194784] [2021-02-23 22:33:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:33:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:33:43,548 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:33:43,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:33:43,613 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:33:43,670 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:33:43,671 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:33:43,672 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:33:43,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:33:43 BoogieIcfgContainer [2021-02-23 22:33:43,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:33:43,760 INFO L168 Benchmark]: Toolchain (without parser) took 2774.36 ms. Allocated memory is still 156.2 MB. Free memory was 111.7 MB in the beginning and 71.6 MB in the end (delta: 40.1 MB). Peak memory consumption was 41.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:43,761 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:33:43,762 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.56 ms. Allocated memory is still 156.2 MB. Free memory was 110.7 MB in the beginning and 98.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:43,764 INFO L168 Benchmark]: Boogie Preprocessor took 193.83 ms. Allocated memory is still 156.2 MB. Free memory was 98.4 MB in the beginning and 139.8 MB in the end (delta: -41.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:43,765 INFO L168 Benchmark]: RCFGBuilder took 902.75 ms. Allocated memory is still 156.2 MB. Free memory was 139.8 MB in the beginning and 106.3 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:43,766 INFO L168 Benchmark]: TraceAbstraction took 1280.91 ms. Allocated memory is still 156.2 MB. Free memory was 105.7 MB in the beginning and 71.6 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:33:43,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 128.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 378.56 ms. Allocated memory is still 156.2 MB. Free memory was 110.7 MB in the beginning and 98.4 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 193.83 ms. Allocated memory is still 156.2 MB. Free memory was 98.4 MB in the beginning and 139.8 MB in the end (delta: -41.4 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 902.75 ms. Allocated memory is still 156.2 MB. Free memory was 139.8 MB in the beginning and 106.3 MB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1280.91 ms. Allocated memory is still 156.2 MB. Free memory was 105.7 MB in the beginning and 71.6 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 147]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [\old(one_sqrt)=4294967299, \old(tiny_sqrt)=4294967307, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L141] double x = 0.0 / 0.0; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L143] CALL, EXPR __ieee754_sqrt(x) VAL [\old(x)=4294967305, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L25] double z; VAL [\old(x)=4294967305, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L26] __int32_t sign = 0x80000000; VAL [\old(x)=4294967305, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L27] __uint32_t r, t1, s1, ix1, q1; VAL [\old(x)=4294967305, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L28] __int32_t ix0, s0, q, m, t, i; VAL [\old(x)=4294967305, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L31] ieee_double_shape_type ew_u; VAL [\old(x)=4294967305, ew_u={3:0}, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L32] ew_u.value = (x) VAL [\old(x)=4294967305, ew_u={3:0}, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L33] EXPR ew_u.parts.msw VAL [\old(x)=4294967305, ew_u={3:0}, ew_u.parts.msw=4294967295, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L33] (ix0) = ew_u.parts.msw VAL [\old(x)=4294967305, ew_u={3:0}, ew_u.parts.msw=4294967295, ix0=-1, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L34] EXPR ew_u.parts.lsw VAL [\old(x)=4294967305, ew_u={3:0}, ew_u.parts.lsw=4294967308, ix0=-1, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L34] (ix1) = ew_u.parts.lsw VAL [\old(x)=4294967305, ew_u={3:0}, ew_u.parts.lsw=4294967308, ix0=-1, ix1=4294967308, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 VAL [\old(x)=4294967305, ix0=-1, ix1=4294967308, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L38] return x * x + x; VAL [\old(x)=4294967305, ix0=-1, ix1=4294967308, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L143] RET, EXPR __ieee754_sqrt(x) VAL [__ieee754_sqrt(x)=4294967298, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L143] double res = __ieee754_sqrt(x); VAL [__ieee754_sqrt(x)=4294967298, one_sqrt=1, res=4294967298, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L146] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967298, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] return x != x; VAL [\old(x)=4294967298, \result=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967298] [L146] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, one_sqrt=1, res=4294967298, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L146] COND TRUE !isnan_double(res) VAL [isnan_double(res)=0, one_sqrt=1, res=4294967298, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] [L147] reach_error() VAL [one_sqrt=1, res=4294967298, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967305] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 152 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 37 SDslu, 127 SDs, 0 SdLazy, 164 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=149occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 4185 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...