/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:56:04,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:56:04,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:56:04,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:56:04,740 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:56:04,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:56:04,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:56:04,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:56:04,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:56:04,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:56:04,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:56:04,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:56:04,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:56:04,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:56:04,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:56:04,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:56:04,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:56:04,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:56:04,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:56:04,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:56:04,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:56:04,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:56:04,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:56:04,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:56:04,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:56:04,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:56:04,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:56:04,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:56:04,831 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 [2020-10-23 17:56:04,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:56:04,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:56:04,889 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:56:04,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:56:04,889 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:56:04,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:56:04,890 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:56:04,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:56:04,890 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:56:04,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:56:04,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:56:04,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:56:04,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:56:04,892 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:56:04,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:56:04,892 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:56:04,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:56:04,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:56:04,893 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:56:04,893 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:56:04,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:56:04,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:04,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:56:04,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:56:04,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:56:04,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:56:04,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:56:04,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:56:04,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:56:04,895 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:56:05,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:56:05,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:56:05,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:56:05,349 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:56:05,349 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:56:05,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-10-23 17:56:05,439 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb2b70bd/2fe85c43dfe3477f9ad25aeed21a9767/FLAG4105ac29c [2020-10-23 17:56:06,006 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:56:06,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-10-23 17:56:06,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb2b70bd/2fe85c43dfe3477f9ad25aeed21a9767/FLAG4105ac29c [2020-10-23 17:56:06,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9eb2b70bd/2fe85c43dfe3477f9ad25aeed21a9767 [2020-10-23 17:56:06,329 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:56:06,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:56:06,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:06,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:56:06,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:56:06,342 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722b5c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06, skipping insertion in model container [2020-10-23 17:56:06,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,355 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:56:06,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:56:06,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:06,589 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:56:06,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:06,675 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:56:06,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06 WrapperNode [2020-10-23 17:56:06,685 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:06,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:56:06,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:56:06,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:56:06,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,726 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,741 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:56:06,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:56:06,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:56:06,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:56:06,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06" (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 [2020-10-23 17:56:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:56:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:56:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:56:06,819 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-23 17:56:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-10-23 17:56:06,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:56:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:56:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:56:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:56:06,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:56:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-23 17:56:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-23 17:56:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:56:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:56:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:56:06,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:56:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:56:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-10-23 17:56:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:56:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:56:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:56:06,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-23 17:56:06,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:07,405 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:07,405 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-23 17:56:07,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:07 BoogieIcfgContainer [2020-10-23 17:56:07,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:07,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:07,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:07,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:07,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:06" (1/3) ... [2020-10-23 17:56:07,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db2458d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:07, skipping insertion in model container [2020-10-23 17:56:07,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06" (2/3) ... [2020-10-23 17:56:07,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db2458d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:07, skipping insertion in model container [2020-10-23 17:56:07,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:07" (3/3) ... [2020-10-23 17:56:07,422 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-10-23 17:56:07,436 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:07,441 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:07,455 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:07,483 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:07,484 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:07,484 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:07,484 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:07,484 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:07,484 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:07,484 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:07,485 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:07,503 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-10-23 17:56:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 17:56:07,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:07,511 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] [2020-10-23 17:56:07,512 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:07,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:07,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1031583415, now seen corresponding path program 1 times [2020-10-23 17:56:07,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:07,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618719210] [2020-10-23 17:56:07,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:07,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:07,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:07,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 17:56:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:07,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:07,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618719210] [2020-10-23 17:56:07,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:07,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:56:07,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252323407] [2020-10-23 17:56:07,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:56:07,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:07,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:56:07,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:56:07,883 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-10-23 17:56:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:08,253 INFO L93 Difference]: Finished difference Result 117 states and 181 transitions. [2020-10-23 17:56:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:56:08,255 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-23 17:56:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:08,269 INFO L225 Difference]: With dead ends: 117 [2020-10-23 17:56:08,270 INFO L226 Difference]: Without dead ends: 56 [2020-10-23 17:56:08,274 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 [2020-10-23 17:56:08,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-23 17:56:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-23 17:56:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-23 17:56:08,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2020-10-23 17:56:08,321 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 26 [2020-10-23 17:56:08,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:08,321 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2020-10-23 17:56:08,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:56:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2020-10-23 17:56:08,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 17:56:08,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:08,323 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, 1, 1] [2020-10-23 17:56:08,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:56:08,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:08,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:08,325 INFO L82 PathProgramCache]: Analyzing trace with hash -2101718248, now seen corresponding path program 1 times [2020-10-23 17:56:08,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:08,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079174517] [2020-10-23 17:56:08,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:08,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:08,563 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:08,599 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:56:08,600 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:56:08,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:56:08,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:08 BoogieIcfgContainer [2020-10-23 17:56:08,646 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:56:08,649 INFO L168 Benchmark]: Toolchain (without parser) took 2317.35 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 141.8 MB in the beginning and 124.7 MB in the end (delta: 17.2 MB). Peak memory consumption was 49.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,650 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:56:08,651 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.85 ms. Allocated memory is still 159.4 MB. Free memory was 141.4 MB in the beginning and 141.9 MB in the end (delta: -452.5 kB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,652 INFO L168 Benchmark]: Boogie Preprocessor took 52.86 ms. Allocated memory is still 159.4 MB. Free memory was 141.9 MB in the beginning and 139.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,653 INFO L168 Benchmark]: RCFGBuilder took 668.63 ms. Allocated memory is still 159.4 MB. Free memory was 139.7 MB in the beginning and 112.4 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,656 INFO L168 Benchmark]: TraceAbstraction took 1233.76 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 112.1 MB in the beginning and 124.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 159.4 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 348.85 ms. Allocated memory is still 159.4 MB. Free memory was 141.4 MB in the beginning and 141.9 MB in the end (delta: -452.5 kB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 52.86 ms. Allocated memory is still 159.4 MB. Free memory was 141.9 MB in the beginning and 139.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 668.63 ms. Allocated memory is still 159.4 MB. Free memory was 139.7 MB in the beginning and 112.4 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1233.76 ms. Allocated memory was 159.4 MB in the beginning and 191.9 MB in the end (delta: 32.5 MB). Free memory was 112.1 MB in the beginning and 124.7 MB in the end (delta: -12.6 MB). Peak memory consumption was 20.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934610, \old(Zero_fmod)=8589934596, \old(Zero_fmod)=8589934605, one_fmod=1, Zero_fmod={5:0}] [L128] float x = __VERIFIER_nondet_float(); [L129] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=8589934594, Zero_fmod={5:0}] [L131] CALL isfinite_float(x) VAL [\old(x)=8589934594, one_fmod=1, Zero_fmod={5:0}] [L111] __int32_t ix; VAL [\old(x)=8589934594, one_fmod=1, x=8589934594, Zero_fmod={5:0}] [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); VAL [\old(x)=8589934594, \result=1, ix=2139095039, one_fmod=1, x=8589934594, Zero_fmod={5:0}] [L131] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934594, Zero_fmod={5:0}] [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, Zero_fmod={5:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, x=8589934594, y=8589934593, Zero_fmod={5:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, sx=13, x=8589934594, y=8589934593, Zero_fmod={5:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [\old(x)=8589934594, \old(y)=8589934593, hx=2139095040, hy=0, one_fmod=1, sx=13, x=8589934594, y=8589934593, Zero_fmod={5:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934607, one_fmod=1, x=8589934594, y=8589934593, Zero_fmod={5:0}] [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x VAL [one_fmod=1, res=8589934607, x=8589934594, y=8589934593, Zero_fmod={5:0}] [L137] CALL reach_error() VAL [one_fmod=1, Zero_fmod={5:0}] [L3] __assert_fail("0", "float_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 8 SDslu, 62 SDs, 0 SdLazy, 77 SolverSat, 8 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=64occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200 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...