/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_1072b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:10,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:10,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:10,481 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:47:10,482 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:47:10,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:47:10,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:47:10,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:47:10,490 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:47:10,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:47:10,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:47:10,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:47:10,495 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:10,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:10,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:10,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:10,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:10,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:10,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:10,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:10,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:10,538 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:10,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:10,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:10,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 15:47:10,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 15:47:10,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 15:47:10,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 15:47:10,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 15:47:10,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 15:47:10,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 15:47:10,557 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 15:47:10,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 15:47:10,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 15:47:10,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 15:47:10,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 15:47:10,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 15:47:10,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 15:47:10,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:10,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:10,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:10,575 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 [2021-02-21 15:47:10,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:10,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:10,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:10,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:10,632 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:10,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:10,633 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:10,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:10,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:10,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:10,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:10,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:10,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:10,635 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:10,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:10,636 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:10,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:10,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:10,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:10,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:10,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:10,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:10,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:10,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:10,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:10,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:10,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:10,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:10,639 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:11,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:11,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:11,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:11,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:11,112 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:11,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072b.c [2021-02-21 15:47:11,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe1a5181/ff76ab5af30940839fcffd1fc5784265/FLAG1ee2a8a2a [2021-02-21 15:47:11,847 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:11,848 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072b.c [2021-02-21 15:47:11,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe1a5181/ff76ab5af30940839fcffd1fc5784265/FLAG1ee2a8a2a [2021-02-21 15:47:12,191 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fe1a5181/ff76ab5af30940839fcffd1fc5784265 [2021-02-21 15:47:12,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:12,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:12,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:12,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:12,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:12,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:12" (1/1) ... [2021-02-21 15:47:12,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8865625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12, skipping insertion in model container [2021-02-21 15:47:12,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:12" (1/1) ... [2021-02-21 15:47:12,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:12,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:12,432 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_1072b.c[2110,2123] [2021-02-21 15:47:12,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:12,454 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:12,524 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_1072b.c[2110,2123] [2021-02-21 15:47:12,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:12,551 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:12,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12 WrapperNode [2021-02-21 15:47:12,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:12,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:12,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:12,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:12,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12" (1/1) ... [2021-02-21 15:47:12,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12" (1/1) ... [2021-02-21 15:47:12,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12" (1/1) ... [2021-02-21 15:47:12,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12" (1/1) ... [2021-02-21 15:47:12,595 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12" (1/1) ... [2021-02-21 15:47:12,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12" (1/1) ... [2021-02-21 15:47:12,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12" (1/1) ... [2021-02-21 15:47:12,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:12,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:12,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:12,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:12,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12" (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 [2021-02-21 15:47:12,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:12,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:12,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 15:47:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2021-02-21 15:47:12,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 15:47:12,741 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:12,741 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:12,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:12,743 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 15:47:12,744 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2021-02-21 15:47:12,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:12,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 15:47:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:12,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:12,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:13,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:13,417 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-21 15:47:13,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:13 BoogieIcfgContainer [2021-02-21 15:47:13,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:13,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:13,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:13,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:13,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:12" (1/3) ... [2021-02-21 15:47:13,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7792e7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:13, skipping insertion in model container [2021-02-21 15:47:13,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:12" (2/3) ... [2021-02-21 15:47:13,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7792e7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:13, skipping insertion in model container [2021-02-21 15:47:13,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:13" (3/3) ... [2021-02-21 15:47:13,429 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072b.c [2021-02-21 15:47:13,436 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:13,442 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:13,463 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:13,493 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:13,494 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:13,494 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:13,494 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:13,494 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:13,494 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:13,494 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:13,495 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-02-21 15:47:13,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 15:47:13,520 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:13,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:47:13,522 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:13,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:13,529 INFO L82 PathProgramCache]: Analyzing trace with hash -39916397, now seen corresponding path program 1 times [2021-02-21 15:47:13,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:13,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583717501] [2021-02-21 15:47:13,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:13,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:13,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:13,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:13,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:13,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:13,823 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:13,825 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:13,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:13,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:13,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:13,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:13,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:47:13,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583717501] [2021-02-21 15:47:13,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:13,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:13,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371644103] [2021-02-21 15:47:13,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:13,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:13,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:13,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:13,898 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2021-02-21 15:47:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:14,191 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2021-02-21 15:47:14,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:14,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-21 15:47:14,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:14,204 INFO L225 Difference]: With dead ends: 74 [2021-02-21 15:47:14,204 INFO L226 Difference]: Without dead ends: 37 [2021-02-21 15:47:14,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:47:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-21 15:47:14,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-02-21 15:47:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-21 15:47:14,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-02-21 15:47:14,257 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 19 [2021-02-21 15:47:14,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:14,257 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-02-21 15:47:14,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:14,258 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-02-21 15:47:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 15:47:14,259 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:14,259 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] [2021-02-21 15:47:14,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:14,260 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:14,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:14,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1483130551, now seen corresponding path program 1 times [2021-02-21 15:47:14,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:14,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712290644] [2021-02-21 15:47:14,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:14,335 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:14,375 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:14,408 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:14,409 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:14,410 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:14,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:14 BoogieIcfgContainer [2021-02-21 15:47:14,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:14,452 INFO L168 Benchmark]: Toolchain (without parser) took 2255.44 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 74.8 MB in the end (delta: 51.5 MB). Peak memory consumption was 51.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:14,453 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 117.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:14,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.90 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:14,455 INFO L168 Benchmark]: Boogie Preprocessor took 55.25 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:14,456 INFO L168 Benchmark]: RCFGBuilder took 810.70 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 125.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:14,457 INFO L168 Benchmark]: TraceAbstraction took 1029.31 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 74.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:14,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 117.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 341.90 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.25 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 810.70 ms. Allocated memory is still 151.0 MB. Free memory was 112.3 MB in the beginning and 125.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 16.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1029.31 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 74.8 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 88]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 87, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L83] double x = 0.0; VAL [x=0] [L84] CALL, EXPR trunc_double(x) VAL [\old(x)=0] [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; VAL [\old(x)=0, x=0] [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)=0, exponent_less_1023=1024, lsw=9, msw=0, signbit=-1, x=0] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=0, exponent_less_1023=1024, lsw=9, msw=0, signbit=-1, x=0] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=0, exponent_less_1023=1024, lsw=9, msw=0, signbit=-1, x=0] [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; VAL [\old(x)=0, exponent_less_1023=1024, lsw=9, msw=0, signbit=-1, x=0] [L84] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967299, x=0] [L84] double res = trunc_double(x); [L87] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4294967299, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L87] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L88] reach_error() VAL [res=4294967299, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 6 SDslu, 35 SDs, 0 SdLazy, 44 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1080 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...