/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:24:47,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:24:47,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:24:47,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:24:47,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:24:47,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:24:47,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:24:47,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:24:47,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:24:47,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:24:47,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:24:47,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:24:47,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:24:47,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:24:47,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:24:47,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:24:47,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:24:47,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:24:47,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:24:47,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:24:47,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:24:47,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:24:47,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:24:47,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:24:47,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:24:47,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:24:47,956 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:24:47,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:24:47,960 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:24:47,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:24:47,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:24:47,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:24:47,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:24:47,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:24:47,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:24:47,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:24:47,963 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:24:47,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:24:47,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:24:47,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:24:47,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:24:47,965 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:24:47,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:24:47,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:24:47,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:24:47,966 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:24:47,966 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:24:47,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:24:47,967 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:24:48,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:24:48,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:24:48,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:24:48,407 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:24:48,408 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:24:48,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-10-23 20:24:48,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd5a87a0a/53da160a8a394f20b2c118d4c01039e7/FLAG8e63b0763 [2020-10-23 20:24:49,126 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:24:49,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052a.c [2020-10-23 20:24:49,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd5a87a0a/53da160a8a394f20b2c118d4c01039e7/FLAG8e63b0763 [2020-10-23 20:24:49,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd5a87a0a/53da160a8a394f20b2c118d4c01039e7 [2020-10-23 20:24:49,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:24:49,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:24:49,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:49,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:24:49,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:24:49,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:49" (1/1) ... [2020-10-23 20:24:49,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76222ba3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49, skipping insertion in model container [2020-10-23 20:24:49,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:49" (1/1) ... [2020-10-23 20:24:49,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:24:49,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:24:49,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:49,781 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:24:49,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:49,886 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:24:49,887 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49 WrapperNode [2020-10-23 20:24:49,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:49,888 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:24:49,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:24:49,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:24:49,904 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49" (1/1) ... [2020-10-23 20:24:49,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49" (1/1) ... [2020-10-23 20:24:49,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49" (1/1) ... [2020-10-23 20:24:49,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49" (1/1) ... [2020-10-23 20:24:49,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49" (1/1) ... [2020-10-23 20:24:49,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49" (1/1) ... [2020-10-23 20:24:49,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49" (1/1) ... [2020-10-23 20:24:49,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:24:49,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:24:49,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:24:49,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:24:49,993 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49" (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 [2020-10-23 20:24:50,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:24:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:24:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:24:50,078 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-10-23 20:24:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-23 20:24:50,079 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:24:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:24:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:24:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:24:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:24:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-10-23 20:24:50,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:24:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:24:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:24:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:24:50,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:24:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-23 20:24:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:24:50,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:24:50,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:24:50,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:24:50,851 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:24:50,853 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 20:24:50,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:50 BoogieIcfgContainer [2020-10-23 20:24:50,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:24:50,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:24:50,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:24:50,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:24:50,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:24:49" (1/3) ... [2020-10-23 20:24:50,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f01305b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:50, skipping insertion in model container [2020-10-23 20:24:50,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:49" (2/3) ... [2020-10-23 20:24:50,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f01305b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:50, skipping insertion in model container [2020-10-23 20:24:50,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:50" (3/3) ... [2020-10-23 20:24:50,866 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052a.c [2020-10-23 20:24:50,879 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:24:50,884 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:24:50,899 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:24:50,935 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:24:50,936 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:24:50,936 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:24:50,936 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:24:50,936 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:24:50,936 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:24:50,937 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:24:50,937 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:24:50,962 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-10-23 20:24:50,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-23 20:24:50,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:50,981 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] [2020-10-23 20:24:50,981 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:50,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:50,989 INFO L82 PathProgramCache]: Analyzing trace with hash 369545744, now seen corresponding path program 1 times [2020-10-23 20:24:50,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:50,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818461729] [2020-10-23 20:24:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:51,080 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:51,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:24:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:51,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:24:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:51,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 20:24:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:51,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:24:51,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818461729] [2020-10-23 20:24:51,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:24:51,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:24:51,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220774192] [2020-10-23 20:24:51,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:24:51,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:24:51,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:24:51,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:24:51,424 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2020-10-23 20:24:51,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:24:51,979 INFO L93 Difference]: Finished difference Result 230 states and 274 transitions. [2020-10-23 20:24:51,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:24:51,980 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-10-23 20:24:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:24:51,992 INFO L225 Difference]: With dead ends: 230 [2020-10-23 20:24:51,992 INFO L226 Difference]: Without dead ends: 118 [2020-10-23 20:24:51,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:24:52,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-23 20:24:52,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-10-23 20:24:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-23 20:24:52,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 132 transitions. [2020-10-23 20:24:52,058 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 132 transitions. Word has length 47 [2020-10-23 20:24:52,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:24:52,059 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 132 transitions. [2020-10-23 20:24:52,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:24:52,059 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 132 transitions. [2020-10-23 20:24:52,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-23 20:24:52,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:52,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:24:52,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:24:52,063 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:52,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:52,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1884687076, now seen corresponding path program 1 times [2020-10-23 20:24:52,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:52,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270313258] [2020-10-23 20:24:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:52,068 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:52,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:52,401 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:52,445 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:24:52,446 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:24:52,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:24:52,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:24:52 BoogieIcfgContainer [2020-10-23 20:24:52,467 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:24:52,470 INFO L168 Benchmark]: Toolchain (without parser) took 2993.96 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 126.7 MB in the beginning and 157.7 MB in the end (delta: -30.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:52,470 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:24:52,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:52,472 INFO L168 Benchmark]: Boogie Preprocessor took 98.19 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:52,473 INFO L168 Benchmark]: RCFGBuilder took 868.20 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 127.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:52,474 INFO L168 Benchmark]: TraceAbstraction took 1609.68 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 126.5 MB in the beginning and 157.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:52,478 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 151.0 MB. Free memory is still 125.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 401.08 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 115.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 98.19 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 868.20 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 127.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1609.68 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 126.5 MB in the beginning and 157.7 MB in the end (delta: -31.1 MB). Peak memory consumption was 4.0 MB. 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 bitwiseOr at line 93, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 90. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; [L103] double x = 1.0 / 0.0; [L104] CALL, EXPR floor_double(x) [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L28] COND FALSE !(j0 < 20) [L49] COND TRUE j0 > 51 [L50] COND TRUE j0 == 0x400 [L51] return x + x; [L104] RET, EXPR floor_double(x) [L104] double res = floor_double(x); [L107] CALL, EXPR isinf_double(res) [L83] __int32_t hx, lx; [L85] ieee_double_shape_type ew_u; [L86] ew_u.value = (x) [L87] EXPR ew_u.parts.msw [L87] (hx) = ew_u.parts.msw [L88] EXPR ew_u.parts.lsw [L88] (lx) = ew_u.parts.lsw [L90] hx &= 0x7fffffff [L91] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L92] hx = 0x7ff00000 - hx [L93] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L107] RET, EXPR isinf_double(res) [L107] COND TRUE !isinf_double(res) [L108] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1052a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 127 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 23 SDslu, 96 SDs, 0 SdLazy, 150 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...