/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_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:32:53,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:32:53,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:32:53,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 00:32:53,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 00:32:53,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 00:32:53,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 00:32:53,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 00:32:53,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 00:32:53,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 00:32:53,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 00:32:53,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-10-24 00:32:54,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:32:54,061 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:32:54,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:32:54,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:32:54,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:32:54,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:32:54,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:32:54,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:32:54,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:32:54,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:32:54,064 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:32:54,065 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:32:54,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:32:54,065 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:32:54,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:32:54,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:32:54,066 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:32:54,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:32:54,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:32:54,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:32:54,067 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:32:54,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:32:54,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:32:54,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:32:54,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:32:54,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:32:54,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:32:54,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:32:54,477 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:32:54,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-10-24 00:32:54,558 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02522f87/726495a767514a1bb38a4b055ab75bab/FLAGc3b3ca1e2 [2020-10-24 00:32:55,199 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:32:55,200 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-10-24 00:32:55,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02522f87/726495a767514a1bb38a4b055ab75bab/FLAGc3b3ca1e2 [2020-10-24 00:32:55,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02522f87/726495a767514a1bb38a4b055ab75bab [2020-10-24 00:32:55,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:32:55,493 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:32:55,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:32:55,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:32:55,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:32:55,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:55" (1/1) ... [2020-10-24 00:32:55,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d2ed2e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55, skipping insertion in model container [2020-10-24 00:32:55,504 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:55" (1/1) ... [2020-10-24 00:32:55,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:32:55,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:32:55,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:32:55,762 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:32:55,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:32:55,817 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:32:55,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55 WrapperNode [2020-10-24 00:32:55,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:32:55,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:32:55,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:32:55,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:32:55,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55" (1/1) ... [2020-10-24 00:32:55,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55" (1/1) ... [2020-10-24 00:32:55,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55" (1/1) ... [2020-10-24 00:32:55,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55" (1/1) ... [2020-10-24 00:32:55,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55" (1/1) ... [2020-10-24 00:32:55,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55" (1/1) ... [2020-10-24 00:32:55,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55" (1/1) ... [2020-10-24 00:32:55,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:32:55,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:32:55,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:32:55,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:32:55,932 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55" (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 [2020-10-24 00:32:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:32:56,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:32:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:32:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-24 00:32:56,011 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-10-24 00:32:56,012 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:32:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:32:56,012 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:32:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:32:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:32:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-24 00:32:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-10-24 00:32:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 00:32:56,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:32:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:32:56,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:32:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 00:32:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:32:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:32:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:32:56,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:32:56,877 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:32:56,877 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-10-24 00:32:56,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:56 BoogieIcfgContainer [2020-10-24 00:32:56,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:32:56,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:32:56,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:32:56,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:32:56,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:32:55" (1/3) ... [2020-10-24 00:32:56,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7c99b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:56, skipping insertion in model container [2020-10-24 00:32:56,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:55" (2/3) ... [2020-10-24 00:32:56,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7c99b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:56, skipping insertion in model container [2020-10-24 00:32:56,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:56" (3/3) ... [2020-10-24 00:32:56,889 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-10-24 00:32:56,900 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:32:56,906 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:32:56,919 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:32:56,942 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:32:56,942 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:32:56,942 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:32:56,942 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:32:56,942 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:32:56,943 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:32:56,943 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:32:56,943 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:32:56,976 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states. [2020-10-24 00:32:56,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-24 00:32:56,991 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:32:56,992 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] [2020-10-24 00:32:56,992 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:32:56,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:32:56,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1598378518, now seen corresponding path program 1 times [2020-10-24 00:32:57,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:32:57,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473631627] [2020-10-24 00:32:57,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:32:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:57,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:32:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:57,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-24 00:32:57,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-24 00:32:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:32:57,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473631627] [2020-10-24 00:32:57,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:32:57,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:32:57,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219271832] [2020-10-24 00:32:57,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:32:57,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:32:57,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:32:57,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:32:57,390 INFO L87 Difference]: Start difference. First operand 194 states. Second operand 4 states. [2020-10-24 00:32:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:32:58,170 INFO L93 Difference]: Finished difference Result 361 states and 416 transitions. [2020-10-24 00:32:58,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:32:58,172 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-24 00:32:58,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:32:58,191 INFO L225 Difference]: With dead ends: 361 [2020-10-24 00:32:58,191 INFO L226 Difference]: Without dead ends: 178 [2020-10-24 00:32:58,199 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 [2020-10-24 00:32:58,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-24 00:32:58,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-24 00:32:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-24 00:32:58,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 184 transitions. [2020-10-24 00:32:58,307 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 184 transitions. Word has length 48 [2020-10-24 00:32:58,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:32:58,309 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 184 transitions. [2020-10-24 00:32:58,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:32:58,309 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 184 transitions. [2020-10-24 00:32:58,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-24 00:32:58,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:32:58,321 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] [2020-10-24 00:32:58,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:32:58,321 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:32:58,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:32:58,322 INFO L82 PathProgramCache]: Analyzing trace with hash 2058803451, now seen corresponding path program 1 times [2020-10-24 00:32:58,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:32:58,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [53991149] [2020-10-24 00:32:58,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:32:58,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:58,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:32:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:58,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-24 00:32:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:58,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-24 00:32:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:58,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:32:58,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [53991149] [2020-10-24 00:32:58,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:32:58,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-24 00:32:58,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952376564] [2020-10-24 00:32:58,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-24 00:32:58,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:32:58,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-24 00:32:58,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-24 00:32:58,572 INFO L87 Difference]: Start difference. First operand 178 states and 184 transitions. Second operand 5 states. [2020-10-24 00:32:58,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:32:58,976 INFO L93 Difference]: Finished difference Result 186 states and 191 transitions. [2020-10-24 00:32:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-24 00:32:58,976 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 70 [2020-10-24 00:32:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:32:58,979 INFO L225 Difference]: With dead ends: 186 [2020-10-24 00:32:58,980 INFO L226 Difference]: Without dead ends: 178 [2020-10-24 00:32:58,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-24 00:32:58,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-24 00:32:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-24 00:32:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-24 00:32:58,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 183 transitions. [2020-10-24 00:32:58,999 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 183 transitions. Word has length 70 [2020-10-24 00:32:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:32:59,000 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 183 transitions. [2020-10-24 00:32:59,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-24 00:32:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 183 transitions. [2020-10-24 00:32:59,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-24 00:32:59,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:32:59,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:32:59,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:32:59,004 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:32:59,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:32:59,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1833127254, now seen corresponding path program 1 times [2020-10-24 00:32:59,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:32:59,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179441599] [2020-10-24 00:32:59,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:32:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:32:59,100 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:32:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:32:59,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:32:59,198 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:32:59,199 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:32:59,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 00:32:59,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:32:59 BoogieIcfgContainer [2020-10-24 00:32:59,271 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:32:59,274 INFO L168 Benchmark]: Toolchain (without parser) took 3785.54 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 134.3 MB in the beginning and 152.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:59,275 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 125.4 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:32:59,276 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.23 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 122.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:59,276 INFO L168 Benchmark]: Boogie Preprocessor took 111.49 ms. Allocated memory is still 151.0 MB. Free memory was 122.2 MB in the beginning and 133.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:59,277 INFO L168 Benchmark]: RCFGBuilder took 948.69 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 92.1 MB in the end (delta: 41.6 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:59,278 INFO L168 Benchmark]: TraceAbstraction took 2389.58 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 91.7 MB in the beginning and 152.1 MB in the end (delta: -60.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:32:59,282 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 was 125.6 MB in the beginning and 125.4 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.23 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 122.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.49 ms. Allocated memory is still 151.0 MB. Free memory was 122.2 MB in the beginning and 133.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 948.69 ms. Allocated memory is still 151.0 MB. Free memory was 133.7 MB in the beginning and 92.1 MB in the end (delta: 41.6 MB). Peak memory consumption was 40.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2389.58 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 91.7 MB in the beginning and 152.1 MB in the end (delta: -60.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 118, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L19] static const double one_modf = 1.0; VAL [\old(one_modf)=8589934596, one_modf=1] [L118] double x = 0.0 / 0.0; VAL [one_modf=1] [L119] double iptr; VAL [iptr={9:0}, one_modf=1] [L120] CALL, EXPR modf_double(x, &iptr) VAL [\old(x)=8589934604, iptr={9:0}, one_modf=1] [L22] __int32_t i0, i1, j0; VAL [\old(x)=8589934604, iptr={9:0}, iptr={9:0}, one_modf=1, x=8589934604] [L23] __uint32_t i; VAL [\old(x)=8589934604, iptr={9:0}, iptr={9:0}, one_modf=1, x=8589934604] [L25] ieee_double_shape_type ew_u; VAL [\old(x)=8589934604, ew_u={10:0}, iptr={9:0}, iptr={9:0}, one_modf=1, x=8589934604] [L26] ew_u.value = (x) VAL [\old(x)=8589934604, ew_u={10:0}, iptr={9:0}, iptr={9:0}, one_modf=1, x=8589934604] [L27] EXPR ew_u.parts.msw VAL [\old(x)=8589934604, ew_u={10:0}, ew_u.parts.msw=8589934590, iptr={9:0}, iptr={9:0}, one_modf=1, x=8589934604] [L27] (i0) = ew_u.parts.msw VAL [(i0) = ew_u.parts.msw=8589934605, \old(x)=8589934604, ew_u={10:0}, ew_u.parts.msw=8589934590, i0=-2, iptr={9:0}, iptr={9:0}, one_modf=1, x=8589934604] [L28] EXPR ew_u.parts.lsw VAL [\old(x)=8589934604, ew_u={10:0}, ew_u.parts.lsw=4294967295, i0=-2, iptr={9:0}, iptr={9:0}, one_modf=1, x=8589934604] [L28] (i1) = ew_u.parts.lsw VAL [(i1) = ew_u.parts.lsw=8589934591, \old(x)=8589934604, ew_u={10:0}, ew_u.parts.lsw=4294967295, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, one_modf=1, x=8589934604] [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=8589934604, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, one_modf=1, x=8589934604] [L31] COND TRUE j0 < 20 VAL [\old(x)=8589934604, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, j0=-1, one_modf=1, x=8589934604] [L32] COND TRUE j0 < 0 VAL [\old(x)=8589934604, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, j0=-1, one_modf=1, x=8589934604] [L34] ieee_double_shape_type iw_u; VAL [\old(x)=8589934604, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, iw_u={3:0}, j0=-1, one_modf=1, x=8589934604] [L35] iw_u.parts.msw = (i0 & 0x80000000) VAL [\old(x)=8589934604, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, iw_u={3:0}, j0=-1, one_modf=1, x=8589934604] [L36] iw_u.parts.lsw = (0) VAL [\old(x)=8589934604, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, iw_u={3:0}, j0=-1, one_modf=1, x=8589934604] [L37] EXPR iw_u.value VAL [\old(x)=8589934604, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, iw_u={3:0}, iw_u.value=8589934598, j0=-1, one_modf=1, x=8589934604] [L37] (*iptr) = iw_u.value VAL [\old(x)=8589934604, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, iw_u={3:0}, iw_u.value=8589934598, j0=-1, one_modf=1, x=8589934604] [L39] return x; VAL [\old(x)=8589934604, \result=8589934604, i0=-2, i1=-1, iptr={9:0}, iptr={9:0}, j0=-1, one_modf=1, x=8589934604] [L120] RET, EXPR modf_double(x, &iptr) VAL [iptr={9:0}, modf_double(x, &iptr)=8589934604, one_modf=1, x=8589934604] [L120] double res = modf_double(x, &iptr); VAL [iptr={9:0}, modf_double(x, &iptr)=8589934604, one_modf=1, res=8589934604, x=8589934604] [L123] EXPR \read(iptr) VAL [\read(iptr)=8589934598, iptr={9:0}, one_modf=1, res=8589934604, x=8589934604] [L123] CALL, EXPR isnan_double(iptr) VAL [\old(x)=8589934598, one_modf=1] [L17] return x != x; VAL [\old(x)=8589934598, \result=1, one_modf=1, x=8589934598] [L123] RET, EXPR isnan_double(iptr) VAL [\read(iptr)=8589934598, iptr={9:0}, isnan_double(iptr)=1, one_modf=1, res=8589934604, x=8589934604] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=8589934598, iptr={9:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, one_modf=1, res=8589934604, x=8589934604] [L123] CALL, EXPR isnan_double(res) VAL [\old(x)=8589934604, one_modf=1] [L17] return x != x; VAL [\old(x)=8589934604, \result=0, one_modf=1, x=8589934604] [L123] RET, EXPR isnan_double(res) VAL [\read(iptr)=8589934598, iptr={9:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=8589934604, x=8589934604] [L123] isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=8589934598, iptr={9:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=8589934604, x=8589934604] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) VAL [\read(iptr)=8589934598, iptr={9:0}, isnan_double(iptr)=1, isnan_double(iptr) && !isnan_double(res)=1, isnan_double(res)=0, one_modf=1, res=8589934604, x=8589934604] [L124] CALL reach_error() VAL [one_modf=1] [L3] __assert_fail("0", "double_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 194 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 373 SDtfs, 46 SDslu, 357 SDs, 0 SdLazy, 520 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=194occurred 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: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 116 ConstructedInterpolants, 0 QuantifiedInterpolants, 12259 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...