/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_1032c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:00,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:00,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:00,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:00,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:00,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:00,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:00,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:00,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:00,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:00,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:00,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:00,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:00,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:00,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:00,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:00,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:00,605 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:00,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:00,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:00,608 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 15:47:00,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:00,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:00,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:00,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:00,668 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:00,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:00,668 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:00,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:00,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:00,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:00,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:00,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:00,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:00,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:00,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:00,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:00,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:00,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:00,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:00,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:00,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:00,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:00,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:00,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:00,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:00,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:00,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:00,674 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:00,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:01,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:01,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:01,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:01,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:01,132 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:01,132 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2021-02-21 15:47:01,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5af40bf/ae743d466b0f4bacba7f7c2d476edf12/FLAGdb3b0a274 [2021-02-21 15:47:01,873 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:01,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2021-02-21 15:47:01,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5af40bf/ae743d466b0f4bacba7f7c2d476edf12/FLAGdb3b0a274 [2021-02-21 15:47:02,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd5af40bf/ae743d466b0f4bacba7f7c2d476edf12 [2021-02-21 15:47:02,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:02,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:02,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:02,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:02,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:02,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@788938f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02, skipping insertion in model container [2021-02-21 15:47:02,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,272 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:02,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:02,470 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_1032c.c[2355,2368] [2021-02-21 15:47:02,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:02,494 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:02,536 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_1032c.c[2355,2368] [2021-02-21 15:47:02,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:02,554 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:02,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02 WrapperNode [2021-02-21 15:47:02,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:02,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:02,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:02,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:02,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (1/1) ... [2021-02-21 15:47:02,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:02,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:02,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:02,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:02,608 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (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 15:47:02,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2021-02-21 15:47:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-21 15:47:02,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2021-02-21 15:47:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-21 15:47:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:03,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:03,153 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 15:47:03,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:03 BoogieIcfgContainer [2021-02-21 15:47:03,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:03,158 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:03,158 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:03,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:03,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:02" (1/3) ... [2021-02-21 15:47:03,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d23a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:03, skipping insertion in model container [2021-02-21 15:47:03,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:02" (2/3) ... [2021-02-21 15:47:03,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d23a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:03, skipping insertion in model container [2021-02-21 15:47:03,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:03" (3/3) ... [2021-02-21 15:47:03,166 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2021-02-21 15:47:03,174 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:03,180 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:03,203 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:03,235 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:03,235 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:03,235 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:03,235 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:03,236 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:03,236 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:03,236 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:03,236 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:03,279 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2021-02-21 15:47:03,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 15:47:03,287 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:03,288 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 15:47:03,288 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:03,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1343585799, now seen corresponding path program 1 times [2021-02-21 15:47:03,308 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:03,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933673391] [2021-02-21 15:47:03,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:03,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:03,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:03,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,667 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:03,705 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,707 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,708 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,709 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-21 15:47:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:03,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:03,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:03,748 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 15:47:03,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933673391] [2021-02-21 15:47:03,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:03,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:03,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721369278] [2021-02-21 15:47:03,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:03,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:03,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:03,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:03,783 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2021-02-21 15:47:04,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:04,052 INFO L93 Difference]: Finished difference Result 76 states and 105 transitions. [2021-02-21 15:47:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:04,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-21 15:47:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:04,066 INFO L225 Difference]: With dead ends: 76 [2021-02-21 15:47:04,066 INFO L226 Difference]: Without dead ends: 38 [2021-02-21 15:47:04,070 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 15:47:04,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-21 15:47:04,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-21 15:47:04,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-21 15:47:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2021-02-21 15:47:04,131 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 25 [2021-02-21 15:47:04,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:04,132 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2021-02-21 15:47:04,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:04,132 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2021-02-21 15:47:04,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 15:47:04,134 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:04,135 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 15:47:04,135 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:04,136 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:04,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1056643266, now seen corresponding path program 1 times [2021-02-21 15:47:04,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:04,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715253918] [2021-02-21 15:47:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:04,296 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:04,403 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:04,456 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:04,457 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:04,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:04,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:04 BoogieIcfgContainer [2021-02-21 15:47:04,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:04,531 INFO L168 Benchmark]: Toolchain (without parser) took 2289.41 ms. Allocated memory is still 170.9 MB. Free memory was 145.4 MB in the beginning and 101.6 MB in the end (delta: 43.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,533 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 170.9 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:04,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.64 ms. Allocated memory is still 170.9 MB. Free memory was 144.4 MB in the beginning and 133.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,537 INFO L168 Benchmark]: Boogie Preprocessor took 46.91 ms. Allocated memory is still 170.9 MB. Free memory was 133.8 MB in the beginning and 131.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,538 INFO L168 Benchmark]: RCFGBuilder took 551.69 ms. Allocated memory is still 170.9 MB. Free memory was 131.8 MB in the beginning and 110.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,540 INFO L168 Benchmark]: TraceAbstraction took 1371.35 ms. Allocated memory is still 170.9 MB. Free memory was 110.3 MB in the beginning and 101.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:04,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 170.9 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.64 ms. Allocated memory is still 170.9 MB. Free memory was 144.4 MB in the beginning and 133.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.91 ms. Allocated memory is still 170.9 MB. Free memory was 133.8 MB in the beginning and 131.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 551.69 ms. Allocated memory is still 170.9 MB. Free memory was 131.8 MB in the beginning and 110.8 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1371.35 ms. Allocated memory is still 170.9 MB. Free memory was 110.3 MB in the beginning and 101.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: 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 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = 1.0 / 0.0; [L89] CALL, EXPR round_double(x) VAL [\old(x)=4294967297] [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; VAL [\old(x)=4294967297, x=4294967297] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967297, exponent_less_1023=1024, lsw=6, msw=-1, x=4294967297] [L26] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967297, exponent_less_1023=1024, lsw=6, msw=-1, x=4294967297] [L40] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967297, exponent_less_1023=1024, lsw=6, msw=-1, x=4294967297] [L41] COND TRUE exponent_less_1023 == 1024 [L42] return x + x; VAL [\old(x)=4294967297, exponent_less_1023=1024, lsw=6, msw=-1, x=4294967297] [L89] RET, EXPR round_double(x) VAL [round_double(x)=4294967301, x=4294967297] [L89] double res = round_double(x); [L92] CALL, EXPR isinf_double(res) VAL [\old(x)=4294967301] [L67] __int32_t hx, lx; VAL [\old(x)=4294967301, x=4294967301] [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=4294967301, \result=0, hx=2146435072, lx=0, x=4294967301] [L92] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=4294967301, x=4294967297] [L92] COND TRUE !isinf_double(res) [L93] reach_error() VAL [res=4294967301, x=4294967297] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 6 SDslu, 41 SDs, 0 SdLazy, 46 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=42occurred 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, 0.2s 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...