/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_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:23:54,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:23:54,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:23:54,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 00:23:54,883 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 00:23:54,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 00:23:54,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 00:23:54,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 00:23:54,891 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 00:23:54,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 00:23:54,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 00:23:54,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 00:23:54,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:23:54,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:23:54,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:23:54,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:23:54,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:23:54,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:23:54,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:23:54,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:23:54,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:23:54,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:23:54,912 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:23:54,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:23:54,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:23:54,931 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:23:54,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:23:54,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:23:54,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:23:54,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:23:54,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:23:54,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:23:54,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:23:54,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:23:54,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:23:54,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:23:54,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:23:54,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:23:54,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:23:54,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:23:54,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:23:54,970 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:23:54,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:23:54,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:23:54,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:23:54,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:23:54,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:23:54,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:23:54,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:23:55,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:23:55,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:23:55,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:23:55,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:23:55,380 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:23:55,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-11-07 00:23:55,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85c2b283/3143dc8af7644045890bed18a6393988/FLAG0b69c1218 [2020-11-07 00:23:56,166 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:23:56,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-11-07 00:23:56,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85c2b283/3143dc8af7644045890bed18a6393988/FLAG0b69c1218 [2020-11-07 00:23:56,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c85c2b283/3143dc8af7644045890bed18a6393988 [2020-11-07 00:23:56,522 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:23:56,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:23:56,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:23:56,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:23:56,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:23:56,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6050cf59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:56, skipping insertion in model container [2020-11-07 00:23:56,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:23:56" (1/1) ... [2020-11-07 00:23:56,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:23:56,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:23:56,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:23:56,855 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:23:56,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:23:57,012 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:23:57,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57 WrapperNode [2020-11-07 00:23:57,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:23:57,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:23:57,015 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:23:57,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:23:57,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57" (1/1) ... [2020-11-07 00:23:57,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57" (1/1) ... [2020-11-07 00:23:57,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57" (1/1) ... [2020-11-07 00:23:57,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57" (1/1) ... [2020-11-07 00:23:57,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57" (1/1) ... [2020-11-07 00:23:57,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57" (1/1) ... [2020-11-07 00:23:57,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57" (1/1) ... [2020-11-07 00:23:57,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:23:57,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:23:57,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:23:57,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:23:57,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57" (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 [2020-11-07 00:23:57,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:23:57,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:23:57,213 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:23:57,213 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-07 00:23:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-11-07 00:23:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-11-07 00:23:57,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:23:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:23:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:23:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:23:57,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:23:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-07 00:23:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-07 00:23:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-11-07 00:23:57,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:23:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:23:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:23:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:23:57,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:23:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-11-07 00:23:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:23:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:23:57,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:23:57,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:23:58,125 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:23:58,126 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-07 00:23:58,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:23:58 BoogieIcfgContainer [2020-11-07 00:23:58,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:23:58,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:23:58,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:23:58,137 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:23:58,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:23:56" (1/3) ... [2020-11-07 00:23:58,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba9eaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:23:58, skipping insertion in model container [2020-11-07 00:23:58,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:23:57" (2/3) ... [2020-11-07 00:23:58,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ba9eaef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:23:58, skipping insertion in model container [2020-11-07 00:23:58,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:23:58" (3/3) ... [2020-11-07 00:23:58,140 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-11-07 00:23:58,157 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:23:58,161 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:23:58,174 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:23:58,198 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:23:58,199 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:23:58,199 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:23:58,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:23:58,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:23:58,199 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:23:58,199 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:23:58,199 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:23:58,220 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2020-11-07 00:23:58,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-07 00:23:58,233 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:23:58,234 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] [2020-11-07 00:23:58,234 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:23:58,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:23:58,241 INFO L82 PathProgramCache]: Analyzing trace with hash -431887694, now seen corresponding path program 1 times [2020-11-07 00:23:58,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:23:58,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200929045] [2020-11-07 00:23:58,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:23:58,333 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:23:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:23:58,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:23:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:23:58,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 00:23:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:23:58,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-11-07 00:23:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:23:58,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:23:58,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200929045] [2020-11-07 00:23:58,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:23:58,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:23:58,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812932086] [2020-11-07 00:23:58,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:23:58,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:23:58,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:23:58,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:23:58,718 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 4 states. [2020-11-07 00:23:59,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:23:59,552 INFO L93 Difference]: Finished difference Result 325 states and 387 transitions. [2020-11-07 00:23:59,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:23:59,554 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-11-07 00:23:59,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:23:59,568 INFO L225 Difference]: With dead ends: 325 [2020-11-07 00:23:59,569 INFO L226 Difference]: Without dead ends: 170 [2020-11-07 00:23:59,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:23:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-07 00:23:59,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-11-07 00:23:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-07 00:23:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 189 transitions. [2020-11-07 00:23:59,659 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 189 transitions. Word has length 53 [2020-11-07 00:23:59,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:23:59,660 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 189 transitions. [2020-11-07 00:23:59,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:23:59,660 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 189 transitions. [2020-11-07 00:23:59,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-11-07 00:23:59,665 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:23:59,666 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, 1, 1, 1, 1, 1, 1] [2020-11-07 00:23:59,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:23:59,666 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:23:59,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:23:59,667 INFO L82 PathProgramCache]: Analyzing trace with hash -868784590, now seen corresponding path program 1 times [2020-11-07 00:23:59,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:23:59,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371320758] [2020-11-07 00:23:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:23:59,672 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:23:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:23:59,854 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:00,017 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:00,089 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:24:00,089 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:24:00,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:24:00,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:24:00 BoogieIcfgContainer [2020-11-07 00:24:00,120 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:24:00,125 INFO L168 Benchmark]: Toolchain (without parser) took 3596.66 ms. Allocated memory is still 158.3 MB. Free memory was 134.8 MB in the beginning and 127.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:00,128 INFO L168 Benchmark]: CDTParser took 1.08 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 103.1 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:24:00,132 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.41 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 121.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:00,133 INFO L168 Benchmark]: Boogie Preprocessor took 92.42 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 119.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:00,134 INFO L168 Benchmark]: RCFGBuilder took 1023.57 ms. Allocated memory is still 158.3 MB. Free memory was 119.0 MB in the beginning and 113.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:00,136 INFO L168 Benchmark]: TraceAbstraction took 1987.24 ms. Allocated memory is still 158.3 MB. Free memory was 113.6 MB in the beginning and 127.8 MB in the end (delta: -14.2 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:24:00,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.08 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 103.1 MB in the end (delta: 73.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 475.41 ms. Allocated memory is still 158.3 MB. Free memory was 134.1 MB in the beginning and 121.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 92.42 ms. Allocated memory is still 158.3 MB. Free memory was 121.2 MB in the beginning and 119.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1023.57 ms. Allocated memory is still 158.3 MB. Free memory was 119.0 MB in the beginning and 113.8 MB in the end (delta: 5.3 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1987.24 ms. Allocated memory is still 158.3 MB. Free memory was 113.6 MB in the beginning and 127.8 MB in the end (delta: -14.2 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 bitwiseOr at line 146, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 143. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L157] double x = 1.0 / 0.0; [L158] CALL, EXPR __ieee754_sqrt(x) [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; [L158] RET, EXPR __ieee754_sqrt(x) [L158] double res = __ieee754_sqrt(x); [L161] CALL, EXPR isinf_double(res) [L136] __int32_t hx, lx; [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L161] RET, EXPR isinf_double(res) [L161] COND TRUE !isinf_double(res) [L162] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_0730a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 192 SDtfs, 39 SDslu, 144 SDs, 0 SdLazy, 200 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=179occurred 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...