/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_1300.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:06,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:06,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:06,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:06,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:06,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:06,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:06,421 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:06,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:06,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:06,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:06,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:06,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:06,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:06,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:06,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:06,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:06,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:06,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:06,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:06,468 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:06,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:06,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:06,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:06,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:06,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:06,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:06,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:06,489 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 20:25:06,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:06,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:06,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:06,505 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:06,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:06,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:06,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:06,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:06,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:06,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:06,507 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:06,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:06,507 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:06,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:06,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:06,508 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:06,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:06,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:06,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:06,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:06,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:06,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:06,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:06,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:06,911 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:06,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:06,915 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:06,916 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:06,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-10-23 20:25:07,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d011a669e/dfd2f20be2b44097bd55da661fcd3f89/FLAG274b4b4f4 [2020-10-23 20:25:07,690 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:07,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-10-23 20:25:07,699 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d011a669e/dfd2f20be2b44097bd55da661fcd3f89/FLAG274b4b4f4 [2020-10-23 20:25:08,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d011a669e/dfd2f20be2b44097bd55da661fcd3f89 [2020-10-23 20:25:08,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:08,059 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:08,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:08,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:08,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:08,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:08" (1/1) ... [2020-10-23 20:25:08,072 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71744c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08, skipping insertion in model container [2020-10-23 20:25:08,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:08" (1/1) ... [2020-10-23 20:25:08,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:08,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:08,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:08,277 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:08,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:08,329 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:08,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08 WrapperNode [2020-10-23 20:25:08,330 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:08,331 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:08,331 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:08,331 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:08,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08" (1/1) ... [2020-10-23 20:25:08,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08" (1/1) ... [2020-10-23 20:25:08,356 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08" (1/1) ... [2020-10-23 20:25:08,356 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08" (1/1) ... [2020-10-23 20:25:08,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08" (1/1) ... [2020-10-23 20:25:08,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08" (1/1) ... [2020-10-23 20:25:08,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08" (1/1) ... [2020-10-23 20:25:08,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:08,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:08,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:08,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:08,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08" (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 20:25:08,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:08,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:08,454 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:08,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-23 20:25:08,454 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 20:25:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-23 20:25:08,455 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:08,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:08,455 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:08,455 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 20:25:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-23 20:25:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:08,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 20:25:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-23 20:25:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:08,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:08,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:09,036 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:09,036 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 20:25:09,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:09 BoogieIcfgContainer [2020-10-23 20:25:09,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:09,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:09,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:09,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:09,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:08" (1/3) ... [2020-10-23 20:25:09,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fab1424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:09, skipping insertion in model container [2020-10-23 20:25:09,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:08" (2/3) ... [2020-10-23 20:25:09,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fab1424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:09, skipping insertion in model container [2020-10-23 20:25:09,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:09" (3/3) ... [2020-10-23 20:25:09,049 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-10-23 20:25:09,063 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:09,069 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:09,085 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:09,111 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:09,111 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:09,111 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:09,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:09,112 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:09,112 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:09,112 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:09,112 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2020-10-23 20:25:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-23 20:25:09,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:09,146 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] [2020-10-23 20:25:09,147 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:09,153 INFO L82 PathProgramCache]: Analyzing trace with hash 274717279, now seen corresponding path program 1 times [2020-10-23 20:25:09,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:09,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1465668234] [2020-10-23 20:25:09,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:09,252 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:09,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:09,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:09,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:25:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:09,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:25:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:09,533 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 20:25:09,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1465668234] [2020-10-23 20:25:09,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:09,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:09,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584883121] [2020-10-23 20:25:09,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:09,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:09,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:09,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:09,561 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 4 states. [2020-10-23 20:25:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:09,978 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2020-10-23 20:25:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:09,982 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-23 20:25:09,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:09,994 INFO L225 Difference]: With dead ends: 153 [2020-10-23 20:25:09,994 INFO L226 Difference]: Without dead ends: 76 [2020-10-23 20:25:10,001 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 20:25:10,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-23 20:25:10,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-23 20:25:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-23 20:25:10,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2020-10-23 20:25:10,090 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 45 [2020-10-23 20:25:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:10,092 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2020-10-23 20:25:10,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2020-10-23 20:25:10,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-23 20:25:10,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:10,100 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] [2020-10-23 20:25:10,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:10,100 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:10,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:10,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1670570861, now seen corresponding path program 1 times [2020-10-23 20:25:10,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:10,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458780177] [2020-10-23 20:25:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:10,113 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:10,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:10,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:10,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:25:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-23 20:25:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:10,375 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 20:25:10,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458780177] [2020-10-23 20:25:10,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:10,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:25:10,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939696831] [2020-10-23 20:25:10,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:25:10,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:10,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:25:10,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:10,379 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 5 states. [2020-10-23 20:25:10,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:10,605 INFO L93 Difference]: Finished difference Result 103 states and 102 transitions. [2020-10-23 20:25:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:25:10,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-23 20:25:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:10,608 INFO L225 Difference]: With dead ends: 103 [2020-10-23 20:25:10,608 INFO L226 Difference]: Without dead ends: 76 [2020-10-23 20:25:10,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:25:10,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-23 20:25:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-23 20:25:10,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-23 20:25:10,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 75 transitions. [2020-10-23 20:25:10,623 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 75 transitions. Word has length 68 [2020-10-23 20:25:10,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:10,624 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 75 transitions. [2020-10-23 20:25:10,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:25:10,624 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 75 transitions. [2020-10-23 20:25:10,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-23 20:25:10,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:10,626 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 20:25:10,626 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:10,626 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:10,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:10,627 INFO L82 PathProgramCache]: Analyzing trace with hash 133944904, now seen corresponding path program 1 times [2020-10-23 20:25:10,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:10,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110404732] [2020-10-23 20:25:10,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:10,631 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:10,738 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:10,849 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:10,898 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:10,898 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:10,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:25:10,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:10 BoogieIcfgContainer [2020-10-23 20:25:10,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:10,923 INFO L168 Benchmark]: Toolchain (without parser) took 2868.28 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 57.7 MB in the end (delta: 69.2 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,924 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:10,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.96 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,926 INFO L168 Benchmark]: Boogie Preprocessor took 47.57 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,927 INFO L168 Benchmark]: RCFGBuilder took 659.34 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 123.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,928 INFO L168 Benchmark]: TraceAbstraction took 1879.85 ms. Allocated memory is still 151.0 MB. Free memory was 122.6 MB in the beginning and 57.7 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:10,932 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 268.96 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.57 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 659.34 ms. Allocated memory is still 151.0 MB. Free memory was 114.4 MB in the beginning and 123.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1879.85 ms. Allocated memory is still 151.0 MB. Free memory was 122.6 MB in the beginning and 57.7 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 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 29, overapproximation of bitwiseAnd at line 42, overapproximation of someBinaryDOUBLEComparisonOperation at line 60, overapproximation of to_real at line 57. Possible FailurePath: [L52] double x = __VERIFIER_nondet_double(); [L55] CALL, EXPR isinf_double(x) [L19] __int32_t hx, lx; [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (hx) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lx) = ew_u.parts.lsw [L26] hx &= 0x7fffffff [L27] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L28] hx = 0x7ff00000 - hx [L29] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L55] RET, EXPR isinf_double(x) [L55] !isinf_double(x) && !isnan_double(x) [L55] CALL, EXPR isnan_double(x) [L33] return x != x; [L55] RET, EXPR isnan_double(x) [L55] !isinf_double(x) && !isnan_double(x) [L55] COND TRUE !isinf_double(x) && !isnan_double(x) [L57] CALL, EXPR isfinite_double(x) [L36] __int32_t hx; [L38] ieee_double_shape_type gh_u; [L39] gh_u.value = (x) [L40] EXPR gh_u.parts.msw [L40] (hx) = gh_u.parts.msw [L42] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L57] RET, EXPR isfinite_double(x) [L57] double res = isfinite_double(x); [L60] COND TRUE res == 0.0 [L61] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1300.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 155 SDtfs, 46 SDslu, 146 SDs, 0 SdLazy, 187 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=87occurred 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, 2 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...