/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:10:23,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:10:23,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:10:23,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:10:23,835 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:10:23,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:10:23,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:10:23,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:10:23,854 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:10:23,855 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:10:23,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:10:23,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:10:23,858 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:10:23,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:10:23,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:10:23,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:10:23,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:10:23,869 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:10:23,872 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:10:23,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:10:23,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:10:23,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:10:23,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:10:23,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:10:23,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:10:23,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:10:23,904 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:10:23,905 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:10:23,906 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:10:23,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:10:23,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:10:23,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:10:23,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:10:23,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:10:23,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:10:23,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:10:23,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:10:23,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:10:23,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:10:23,929 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:10:23,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:10:23,929 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:10:23,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:10:23,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:10:23,930 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:10:23,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:10:23,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:10:23,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:10:23,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:10:23,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:10:23,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:10:23,932 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:10:24,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:10:24,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:10:24,388 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:10:24,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:10:24,390 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:10:24,391 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-09-04 16:10:24,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab5fc6123/7dcc00d1f2c94f008d77fd95bca0104c/FLAG5209335a5 [2020-09-04 16:10:24,975 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:10:24,977 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-09-04 16:10:24,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab5fc6123/7dcc00d1f2c94f008d77fd95bca0104c/FLAG5209335a5 [2020-09-04 16:10:25,346 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab5fc6123/7dcc00d1f2c94f008d77fd95bca0104c [2020-09-04 16:10:25,362 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:10:25,364 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:10:25,370 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:25,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:10:25,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:10:25,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:25" (1/1) ... [2020-09-04 16:10:25,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d6c161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25, skipping insertion in model container [2020-09-04 16:10:25,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:10:25" (1/1) ... [2020-09-04 16:10:25,392 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:10:25,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:10:25,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:25,694 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:10:25,876 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:10:25,900 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:10:25,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25 WrapperNode [2020-09-04 16:10:25,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:10:25,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:10:25,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:10:25,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:10:25,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25" (1/1) ... [2020-09-04 16:10:25,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25" (1/1) ... [2020-09-04 16:10:25,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25" (1/1) ... [2020-09-04 16:10:25,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25" (1/1) ... [2020-09-04 16:10:25,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25" (1/1) ... [2020-09-04 16:10:25,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25" (1/1) ... [2020-09-04 16:10:25,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25" (1/1) ... [2020-09-04 16:10:25,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:10:25,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:10:25,963 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:10:25,963 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:10:25,964 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:10:26,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:10:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:10:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-04 16:10:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-09-04 16:10:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-04 16:10:26,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:10:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:10:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-04 16:10:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-04 16:10:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-09-04 16:10:26,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:10:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:10:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:10:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:10:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:10:26,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:10:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-04 16:10:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:10:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:10:26,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:10:26,639 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:10:26,639 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-04 16:10:26,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:26 BoogieIcfgContainer [2020-09-04 16:10:26,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:10:26,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:10:26,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:10:26,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:10:26,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:10:25" (1/3) ... [2020-09-04 16:10:26,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f33f822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:26, skipping insertion in model container [2020-09-04 16:10:26,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:10:25" (2/3) ... [2020-09-04 16:10:26,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f33f822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:10:26, skipping insertion in model container [2020-09-04 16:10:26,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:10:26" (3/3) ... [2020-09-04 16:10:26,660 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-09-04 16:10:26,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:10:26,681 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:10:26,700 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:10:26,726 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:10:26,726 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:10:26,726 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:10:26,726 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:10:26,727 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:10:26,727 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:10:26,727 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:10:26,727 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:10:26,754 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-04 16:10:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-04 16:10:26,771 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:26,772 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] [2020-09-04 16:10:26,773 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:26,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:26,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1113856544, now seen corresponding path program 1 times [2020-09-04 16:10:26,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:26,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519444922] [2020-09-04 16:10:26,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:26,861 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:27,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:10:27,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 16:10:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:27,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-04 16:10:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:10:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:10:27,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519444922] [2020-09-04 16:10:27,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:10:27,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:10:27,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092470438] [2020-09-04 16:10:27,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:10:27,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:10:27,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:10:27,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:10:27,098 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-09-04 16:10:27,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:10:27,579 INFO L93 Difference]: Finished difference Result 316 states and 377 transitions. [2020-09-04 16:10:27,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:10:27,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-09-04 16:10:27,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:10:27,597 INFO L225 Difference]: With dead ends: 316 [2020-09-04 16:10:27,597 INFO L226 Difference]: Without dead ends: 164 [2020-09-04 16:10:27,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:10:27,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-04 16:10:27,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-09-04 16:10:27,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-04 16:10:27,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 183 transitions. [2020-09-04 16:10:27,674 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 183 transitions. Word has length 47 [2020-09-04 16:10:27,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:10:27,674 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 183 transitions. [2020-09-04 16:10:27,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:10:27,675 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 183 transitions. [2020-09-04 16:10:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-04 16:10:27,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:10:27,679 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] [2020-09-04 16:10:27,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:10:27,679 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:10:27,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:10:27,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1544976000, now seen corresponding path program 1 times [2020-09-04 16:10:27,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:10:27,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101837357] [2020-09-04 16:10:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:10:27,683 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:10:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:27,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:10:27,920 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:10:27,963 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:10:27,964 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:10:27,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:10:27,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:10:27 BoogieIcfgContainer [2020-09-04 16:10:27,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:10:27,991 INFO L168 Benchmark]: Toolchain (without parser) took 2625.88 ms. Allocated memory was 138.4 MB in the beginning and 235.4 MB in the end (delta: 97.0 MB). Free memory was 102.2 MB in the beginning and 163.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 35.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:27,992 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:10:27,993 INFO L168 Benchmark]: CACSL2BoogieTranslator took 531.02 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 102.0 MB in the beginning and 179.2 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:27,994 INFO L168 Benchmark]: Boogie Preprocessor took 60.82 ms. Allocated memory is still 203.4 MB. Free memory was 179.2 MB in the beginning and 177.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:27,995 INFO L168 Benchmark]: RCFGBuilder took 688.03 ms. Allocated memory is still 203.4 MB. Free memory was 176.5 MB in the beginning and 137.3 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:27,996 INFO L168 Benchmark]: TraceAbstraction took 1335.68 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 137.3 MB in the beginning and 163.7 MB in the end (delta: -26.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:10:28,000 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 138.4 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 531.02 ms. Allocated memory was 138.4 MB in the beginning and 203.4 MB in the end (delta: 65.0 MB). Free memory was 102.0 MB in the beginning and 179.2 MB in the end (delta: -77.2 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.82 ms. Allocated memory is still 203.4 MB. Free memory was 179.2 MB in the beginning and 177.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 688.03 ms. Allocated memory is still 203.4 MB. Free memory was 176.5 MB in the beginning and 137.3 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1335.68 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 137.3 MB in the beginning and 163.7 MB in the end (delta: -26.4 MB). Peak memory consumption was 5.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 160]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 144, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of bitwiseAnd at line 141. Possible FailurePath: [L20] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L155] double x = 1.0 / 0.0; [L156] CALL, EXPR __ieee754_sqrt(x) [L23] double z; [L24] __int32_t sign = 0x80000000; [L25] __uint32_t r, t1, s1, ix1, q1; [L26] __int32_t ix0, s0, q, m, t, i; [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (ix0) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (ix1) = ew_u.parts.lsw [L35] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L36] return x * x + x; [L156] RET, EXPR __ieee754_sqrt(x) [L156] double res = __ieee754_sqrt(x); [L159] CALL, EXPR isinf_double(res) [L134] __int32_t hx, lx; [L136] ieee_double_shape_type ew_u; [L137] ew_u.value = (x) [L138] EXPR ew_u.parts.msw [L138] (hx) = ew_u.parts.msw [L139] EXPR ew_u.parts.lsw [L139] (lx) = ew_u.parts.lsw [L141] hx &= 0x7fffffff [L142] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L143] hx = 0x7ff00000 - hx [L144] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L159] RET, EXPR isinf_double(res) [L159] COND TRUE !isinf_double(res) [L160] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 175 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 186 SDtfs, 37 SDslu, 145 SDs, 0 SdLazy, 191 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred 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...