/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:19:44,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:19:44,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:19:44,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:19:44,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:19:44,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:19:44,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:19:44,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:19:44,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:19:44,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:19:44,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:19:44,497 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:19:44,498 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:19:44,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:19:44,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:19:44,504 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:19:44,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:19:44,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:19:44,517 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:19:44,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:19:44,527 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:19:44,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:19:44,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:19:44,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:19:44,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:19:44,569 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:19:44,570 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:19:44,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:19:44,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-19 17:19:44,601 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:19:44,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:19:44,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:19:44,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:19:44,603 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:19:44,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:19:44,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:19:44,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:19:44,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:19:44,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:19:44,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:19:44,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:19:44,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:19:44,606 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:19:44,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:19:44,607 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:19:44,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:19:44,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:19:44,608 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:19:44,608 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:19:44,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:19:44,608 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:19:44,609 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:19:44,609 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:19:44,609 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:19:44,609 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:19:44,610 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:19:44,610 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:19:44,610 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:19:44,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:19:44,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:19:45,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:19:45,004 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:19:45,005 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:19:45,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2021-02-19 17:19:45,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8b82ff14/858b76adad914bf7b51700f1184f71e9/FLAG9b5a75145 [2021-02-19 17:19:45,687 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:19:45,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c [2021-02-19 17:19:45,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8b82ff14/858b76adad914bf7b51700f1184f71e9/FLAG9b5a75145 [2021-02-19 17:19:46,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8b82ff14/858b76adad914bf7b51700f1184f71e9 [2021-02-19 17:19:46,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:19:46,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:19:46,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:19:46,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:19:46,046 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:19:46,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:19:46" (1/1) ... [2021-02-19 17:19:46,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e15a42e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46, skipping insertion in model container [2021-02-19 17:19:46,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:19:46" (1/1) ... [2021-02-19 17:19:46,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:19:46,084 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:19:46,308 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c[2254,2267] [2021-02-19 17:19:46,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:19:46,321 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:19:46,359 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072a.c[2254,2267] [2021-02-19 17:19:46,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:19:46,394 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:19:46,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46 WrapperNode [2021-02-19 17:19:46,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:19:46,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:19:46,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:19:46,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:19:46,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46" (1/1) ... [2021-02-19 17:19:46,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46" (1/1) ... [2021-02-19 17:19:46,439 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46" (1/1) ... [2021-02-19 17:19:46,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46" (1/1) ... [2021-02-19 17:19:46,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46" (1/1) ... [2021-02-19 17:19:46,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46" (1/1) ... [2021-02-19 17:19:46,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46" (1/1) ... [2021-02-19 17:19:46,486 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:19:46,487 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:19:46,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:19:46,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:19:46,489 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46" (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 [2021-02-19 17:19:46,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:19:46,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:19:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:19:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-19 17:19:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2021-02-19 17:19:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-19 17:19:46,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:19:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:19:46,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:19:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:19:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:19:46,610 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-19 17:19:46,611 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2021-02-19 17:19:46,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-19 17:19:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:19:46,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:19:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:19:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-19 17:19:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-19 17:19:46,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:19:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:19:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:19:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:19:47,251 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:19:47,252 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-19 17:19:47,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:19:47 BoogieIcfgContainer [2021-02-19 17:19:47,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:19:47,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:19:47,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:19:47,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:19:47,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:19:46" (1/3) ... [2021-02-19 17:19:47,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71985ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:19:47, skipping insertion in model container [2021-02-19 17:19:47,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:19:46" (2/3) ... [2021-02-19 17:19:47,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71985ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:19:47, skipping insertion in model container [2021-02-19 17:19:47,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:19:47" (3/3) ... [2021-02-19 17:19:47,263 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072a.c [2021-02-19 17:19:47,270 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:19:47,275 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:19:47,294 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:19:47,321 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:19:47,321 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:19:47,322 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:19:47,322 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:19:47,322 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:19:47,322 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:19:47,322 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:19:47,322 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:19:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-19 17:19:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-19 17:19:47,346 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:19:47,347 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] [2021-02-19 17:19:47,347 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:19:47,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:19:47,353 INFO L82 PathProgramCache]: Analyzing trace with hash -332524115, now seen corresponding path program 1 times [2021-02-19 17:19:47,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:19:47,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731951502] [2021-02-19 17:19:47,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:19:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:19:47,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:47,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:47,544 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:47,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:47,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:19:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:19:47,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:47,614 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:47,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:19:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:19:47,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:47,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:47,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:47,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:47,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-19 17:19:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:19:47,650 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:47,651 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:47,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:19:47,652 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:19:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:19:47,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731951502] [2021-02-19 17:19:47,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:19:47,662 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 17:19:47,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702762965] [2021-02-19 17:19:47,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 17:19:47,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:19:47,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 17:19:47,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:19:47,685 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2021-02-19 17:19:47,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:19:47,874 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions. [2021-02-19 17:19:47,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:19:47,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-19 17:19:47,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:19:47,885 INFO L225 Difference]: With dead ends: 72 [2021-02-19 17:19:47,885 INFO L226 Difference]: Without dead ends: 36 [2021-02-19 17:19:47,889 INFO L677 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 [2021-02-19 17:19:47,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-19 17:19:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-19 17:19:47,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-19 17:19:47,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-02-19 17:19:47,935 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2021-02-19 17:19:47,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:19:47,936 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-02-19 17:19:47,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 17:19:47,936 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-02-19 17:19:47,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-19 17:19:47,937 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:19:47,938 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] [2021-02-19 17:19:47,938 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:19:47,938 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:19:47,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:19:47,939 INFO L82 PathProgramCache]: Analyzing trace with hash -215758764, now seen corresponding path program 1 times [2021-02-19 17:19:47,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:19:47,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205888997] [2021-02-19 17:19:47,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:19:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:19:48,087 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:19:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:19:48,200 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:19:48,233 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:19:48,234 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:19:48,235 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:19:48,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:19:48 BoogieIcfgContainer [2021-02-19 17:19:48,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:19:48,286 INFO L168 Benchmark]: Toolchain (without parser) took 2263.50 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 70.6 MB in the end (delta: 57.9 MB). Peak memory consumption was 57.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:48,287 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 153.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:19:48,288 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.48 ms. Allocated memory is still 153.1 MB. Free memory was 127.3 MB in the beginning and 116.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:48,289 INFO L168 Benchmark]: Boogie Preprocessor took 89.24 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 114.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:48,290 INFO L168 Benchmark]: RCFGBuilder took 766.32 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 126.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:48,291 INFO L168 Benchmark]: TraceAbstraction took 1028.65 ms. Allocated memory is still 153.1 MB. Free memory was 125.6 MB in the beginning and 70.6 MB in the end (delta: 55.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:19:48,295 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 153.1 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 354.48 ms. Allocated memory is still 153.1 MB. Free memory was 127.3 MB in the beginning and 116.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 89.24 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 114.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 766.32 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 126.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1028.65 ms. Allocated memory is still 153.1 MB. Free memory was 125.6 MB in the beginning and 70.6 MB in the end (delta: 55.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L87] CALL, EXPR trunc_double(x) VAL [\old(x)=4294967296] [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; VAL [\old(x)=4294967296, x=4294967296] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=10, msw=0, signbit=-2, x=4294967296] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=10, msw=0, signbit=-2, x=4294967296] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=10, msw=0, signbit=-2, x=4294967296] [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=10, msw=0, signbit=-2, x=4294967296] [L87] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967300, x=4294967296] [L87] double res = trunc_double(x); [L90] CALL, EXPR isinf_double(res) VAL [\old(x)=4294967300] [L66] __int32_t hx, lx; VAL [\old(x)=4294967300, x=4294967300] [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=4294967300, \result=0, hx=2146435073, lx=0, x=4294967300] [L90] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=4294967300, x=4294967296] [L90] COND TRUE !isinf_double(res) [L91] reach_error() VAL [res=4294967300, x=4294967296] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 6 SDslu, 33 SDs, 0 SdLazy, 42 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=40occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...