/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/float_req_bl_1092d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:53,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:53,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:53,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:47:53,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:47:53,573 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:47:53,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:47:53,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:47:53,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:47:53,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:47:53,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:47:53,597 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:47:53,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:53,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:53,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:53,605 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:53,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:53,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:53,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:53,634 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:53,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:53,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:53,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:53,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:53,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:53,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:53,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:53,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:53,658 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 15:47:53,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:53,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:53,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:53,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:53,689 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:53,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:53,690 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:53,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:53,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:53,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:53,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:53,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:53,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:53,691 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:53,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:53,692 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:53,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:53,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:53,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:53,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:53,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:53,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:53,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:53,694 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:53,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:53,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:53,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:53,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:53,695 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:54,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:54,140 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:54,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:54,144 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:54,149 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:54,150 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092d.c [2021-02-21 15:47:54,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a071c0db6/9a2ab7e4ec5e433db373766635cc2ea5/FLAGccb065f2b [2021-02-21 15:47:54,890 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:54,891 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092d.c [2021-02-21 15:47:54,899 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a071c0db6/9a2ab7e4ec5e433db373766635cc2ea5/FLAGccb065f2b [2021-02-21 15:47:55,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a071c0db6/9a2ab7e4ec5e433db373766635cc2ea5 [2021-02-21 15:47:55,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:55,287 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:55,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:55,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:55,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:55,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:55" (1/1) ... [2021-02-21 15:47:55,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef7125b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55, skipping insertion in model container [2021-02-21 15:47:55,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:55" (1/1) ... [2021-02-21 15:47:55,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:55,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:55,518 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/float_req_bl_1092d.c[1790,1803] [2021-02-21 15:47:55,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:55,533 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:55,561 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/float_req_bl_1092d.c[1790,1803] [2021-02-21 15:47:55,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:55,586 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:55,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55 WrapperNode [2021-02-21 15:47:55,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:55,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:55,588 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:55,588 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:55,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55" (1/1) ... [2021-02-21 15:47:55,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55" (1/1) ... [2021-02-21 15:47:55,615 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55" (1/1) ... [2021-02-21 15:47:55,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55" (1/1) ... [2021-02-21 15:47:55,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55" (1/1) ... [2021-02-21 15:47:55,633 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55" (1/1) ... [2021-02-21 15:47:55,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55" (1/1) ... [2021-02-21 15:47:55,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:55,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:55,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:55,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:55,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55" (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 15:47:55,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:55,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2021-02-21 15:47:55,781 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2021-02-21 15:47:55,781 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:55,781 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:55,782 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2021-02-21 15:47:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:55,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:55,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:55,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2021-02-21 15:47:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:55,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:56,338 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:56,339 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 15:47:56,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:56 BoogieIcfgContainer [2021-02-21 15:47:56,341 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:56,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:56,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:56,347 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:56,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:55" (1/3) ... [2021-02-21 15:47:56,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567e447f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:56, skipping insertion in model container [2021-02-21 15:47:56,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:55" (2/3) ... [2021-02-21 15:47:56,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567e447f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:56, skipping insertion in model container [2021-02-21 15:47:56,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:56" (3/3) ... [2021-02-21 15:47:56,350 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092d.c [2021-02-21 15:47:56,358 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:56,364 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:56,387 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:56,417 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:56,417 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:56,417 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:56,417 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:56,417 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:56,418 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:56,418 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:56,418 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:56,436 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2021-02-21 15:47:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 15:47:56,442 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:56,443 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] [2021-02-21 15:47:56,443 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:56,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:56,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1082214438, now seen corresponding path program 1 times [2021-02-21 15:47:56,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:56,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855722531] [2021-02-21 15:47:56,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:56,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:56,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:56,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:56,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:56,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:56,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:56,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:56,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:56,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:56,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:56,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:56,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:56,870 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:56,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:56,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 15:47:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:56,898 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:56,899 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:56,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:56,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:56,913 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 15:47:56,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855722531] [2021-02-21 15:47:56,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:56,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:56,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881711489] [2021-02-21 15:47:56,923 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:56,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:56,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:56,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:56,942 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2021-02-21 15:47:57,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:57,180 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2021-02-21 15:47:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:57,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-02-21 15:47:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:57,192 INFO L225 Difference]: With dead ends: 76 [2021-02-21 15:47:57,192 INFO L226 Difference]: Without dead ends: 38 [2021-02-21 15:47:57,196 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 15:47:57,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-21 15:47:57,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-21 15:47:57,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-21 15:47:57,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-02-21 15:47:57,244 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2021-02-21 15:47:57,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:57,245 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-02-21 15:47:57,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:57,245 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-02-21 15:47:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:47:57,247 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:57,247 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] [2021-02-21 15:47:57,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:57,248 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:57,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:57,249 INFO L82 PathProgramCache]: Analyzing trace with hash -556424565, now seen corresponding path program 1 times [2021-02-21 15:47:57,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:57,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941100331] [2021-02-21 15:47:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:57,349 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:57,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:57,446 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:57,500 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:57,501 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:57,502 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:57,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:57 BoogieIcfgContainer [2021-02-21 15:47:57,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:57,584 INFO L168 Benchmark]: Toolchain (without parser) took 2311.72 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 68.5 MB in the end (delta: 57.7 MB). Peak memory consumption was 57.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:57,586 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:57,588 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:57,589 INFO L168 Benchmark]: Boogie Preprocessor took 50.96 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:57,591 INFO L168 Benchmark]: RCFGBuilder took 701.29 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 125.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:57,592 INFO L168 Benchmark]: TraceAbstraction took 1238.75 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 68.5 MB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:57,609 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 151.0 MB. Free memory was 123.7 MB in the beginning and 123.6 MB in the end (delta: 81.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 294.82 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 114.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.96 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 701.29 ms. Allocated memory is still 151.0 MB. Free memory was 112.8 MB in the beginning and 125.7 MB in the end (delta: -12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1238.75 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 68.5 MB in the end (delta: 56.6 MB). Peak memory consumption was 56.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; VAL [\old(huge_ceil)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000] [L78] float x = -1.0f / 0.0f; VAL [huge_ceil=1000000000000000000000000000000] [L79] CALL, EXPR ceil_float(x) VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000] [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000007] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000007] [L25] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000007] [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000007] [L79] RET, EXPR ceil_float(x) VAL [ceil_float(x)=1000000000000000000000000000005, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000007] [L79] float res = ceil_float(x); [L82] CALL, EXPR isinf_float(res) VAL [\old(x)=1000000000000000000000000000005, huge_ceil=1000000000000000000000000000000] [L60] __int32_t ix; VAL [\old(x)=1000000000000000000000000000005, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000005] [L62] ieee_float_shape_type gf_u; [L63] gf_u.value = (x) [L64] EXPR gf_u.word [L64] (ix) = gf_u.word [L66] ix &= 0x7fffffff [L67] return ((ix) == 0x7f800000L); VAL [\old(x)=1000000000000000000000000000005, \result=0, huge_ceil=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000005] [L82] RET, EXPR isinf_float(res) VAL [huge_ceil=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000005, x=1000000000000000000000000000007] [L82] COND TRUE !isinf_float(res) [L83] reach_error() VAL [huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000005, x=1000000000000000000000000000007] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 6 SDslu, 42 SDs, 0 SdLazy, 47 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=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, 0.3s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1840 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...