/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_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:12,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:12,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:12,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:12,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:12,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:12,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:12,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:12,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:12,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:12,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:12,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:12,632 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:12,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:12,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:12,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:12,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:12,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:12,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:12,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:12,667 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 15:47:12,715 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:12,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:12,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:12,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:12,720 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:12,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:12,721 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:12,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:12,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:12,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:12,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:12,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:12,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:12,723 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:12,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:12,724 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:12,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:12,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:12,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:12,724 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:12,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:12,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:12,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:12,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:12,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:12,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:12,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:12,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:12,727 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:13,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:13,128 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:13,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:13,133 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:13,139 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:13,140 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2021-02-21 15:47:13,234 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392cc961c/399e38959da24f2db492c2c312176d09/FLAG1745b3b1b [2021-02-21 15:47:13,901 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:13,902 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2021-02-21 15:47:13,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392cc961c/399e38959da24f2db492c2c312176d09/FLAG1745b3b1b [2021-02-21 15:47:14,280 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392cc961c/399e38959da24f2db492c2c312176d09 [2021-02-21 15:47:14,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:14,299 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:14,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:14,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:14,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:14,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:14" (1/1) ... [2021-02-21 15:47:14,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c511ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14, skipping insertion in model container [2021-02-21 15:47:14,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:14" (1/1) ... [2021-02-21 15:47:14,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:14,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:14,554 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_1072d.c[2254,2267] [2021-02-21 15:47:14,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:14,571 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:14,603 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_1072d.c[2254,2267] [2021-02-21 15:47:14,604 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:14,626 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:14,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14 WrapperNode [2021-02-21 15:47:14,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:14,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:14,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:14,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:14,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14" (1/1) ... [2021-02-21 15:47:14,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14" (1/1) ... [2021-02-21 15:47:14,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14" (1/1) ... [2021-02-21 15:47:14,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14" (1/1) ... [2021-02-21 15:47:14,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14" (1/1) ... [2021-02-21 15:47:14,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14" (1/1) ... [2021-02-21 15:47:14,676 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14" (1/1) ... [2021-02-21 15:47:14,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:14,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:14,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:14,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:14,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14" (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 15:47:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 15:47:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2021-02-21 15:47:14,788 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-21 15:47:14,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 15:47:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2021-02-21 15:47:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-21 15:47:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:15,375 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:15,376 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-21 15:47:15,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:15 BoogieIcfgContainer [2021-02-21 15:47:15,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:15,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:15,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:15,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:15,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:14" (1/3) ... [2021-02-21 15:47:15,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6873a7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:15, skipping insertion in model container [2021-02-21 15:47:15,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:14" (2/3) ... [2021-02-21 15:47:15,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6873a7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:15, skipping insertion in model container [2021-02-21 15:47:15,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:15" (3/3) ... [2021-02-21 15:47:15,390 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2021-02-21 15:47:15,398 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:15,403 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:15,426 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:15,454 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:15,454 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:15,454 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:15,454 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:15,455 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:15,455 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:15,455 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:15,455 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:15,472 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-21 15:47:15,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 15:47:15,478 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:15,479 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] [2021-02-21 15:47:15,479 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:15,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:15,486 INFO L82 PathProgramCache]: Analyzing trace with hash -332524115, now seen corresponding path program 1 times [2021-02-21 15:47:15,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:15,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536109589] [2021-02-21 15:47:15,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:15,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:15,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:15,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:15,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:15,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:15,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:15,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:15,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:15,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:15,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:15,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:15,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:15,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:15,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 15:47:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:15,814 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:15,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:15,816 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:15,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:15,829 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 15:47:15,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536109589] [2021-02-21 15:47:15,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:15,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:15,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967346498] [2021-02-21 15:47:15,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:15,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:15,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:15,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:15,862 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2021-02-21 15:47:16,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:16,064 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions. [2021-02-21 15:47:16,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:16,067 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-21 15:47:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:16,076 INFO L225 Difference]: With dead ends: 72 [2021-02-21 15:47:16,077 INFO L226 Difference]: Without dead ends: 36 [2021-02-21 15:47:16,080 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 [2021-02-21 15:47:16,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-02-21 15:47:16,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-02-21 15:47:16,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-21 15:47:16,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2021-02-21 15:47:16,147 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2021-02-21 15:47:16,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:16,148 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2021-02-21 15:47:16,148 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:16,149 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2021-02-21 15:47:16,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 15:47:16,150 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:16,152 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] [2021-02-21 15:47:16,152 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:16,153 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:16,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:16,156 INFO L82 PathProgramCache]: Analyzing trace with hash -215758764, now seen corresponding path program 1 times [2021-02-21 15:47:16,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:16,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301505353] [2021-02-21 15:47:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:16,383 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:16,521 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:16,576 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:16,577 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:16,578 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:16,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:16 BoogieIcfgContainer [2021-02-21 15:47:16,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:16,631 INFO L168 Benchmark]: Toolchain (without parser) took 2340.39 ms. Allocated memory is still 157.3 MB. Free memory was 132.1 MB in the beginning and 72.6 MB in the end (delta: 59.6 MB). Peak memory consumption was 58.7 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:16,631 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:16,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.37 ms. Allocated memory is still 157.3 MB. Free memory was 131.1 MB in the beginning and 120.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:16,636 INFO L168 Benchmark]: Boogie Preprocessor took 51.77 ms. Allocated memory is still 157.3 MB. Free memory was 120.3 MB in the beginning and 118.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:16,637 INFO L168 Benchmark]: RCFGBuilder took 698.71 ms. Allocated memory is still 157.3 MB. Free memory was 118.5 MB in the beginning and 128.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:16,642 INFO L168 Benchmark]: TraceAbstraction took 1243.67 ms. Allocated memory is still 157.3 MB. Free memory was 128.1 MB in the beginning and 72.6 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:16,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 157.3 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.37 ms. Allocated memory is still 157.3 MB. Free memory was 131.1 MB in the beginning and 120.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.77 ms. Allocated memory is still 157.3 MB. Free memory was 120.3 MB in the beginning and 118.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 698.71 ms. Allocated memory is still 157.3 MB. Free memory was 118.5 MB in the beginning and 128.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1243.67 ms. Allocated memory is still 157.3 MB. Free memory was 128.1 MB in the beginning and 72.6 MB in the end (delta: 55.6 MB). Peak memory consumption was 55.6 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: 1.1s, 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, 0.1s 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, 0.2s SatisfiabilityAnalysisTime, 0.2s 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...