/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:56:04,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:56:04,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:56:04,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:56:04,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:56:04,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:56:04,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:56:04,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:56:04,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:56:04,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:56:04,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:56:04,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:56:04,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:56:04,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:56:04,602 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:56:04,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:56:04,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:56:04,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:56:04,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:56:04,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:56:04,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:56:04,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:56:04,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:56:04,635 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:56:04,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:56:04,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:56:04,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:56:04,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:56:04,670 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 17:56:04,719 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:56:04,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:56:04,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:56:04,724 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:56:04,724 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:56:04,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:56:04,725 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:56:04,725 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:56:04,725 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:56:04,725 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:56:04,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:56:04,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:56:04,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:56:04,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:56:04,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:56:04,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:56:04,728 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:56:04,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:56:04,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:56:04,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:56:04,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:56:04,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:04,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:56:04,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:56:04,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:56:04,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:56:04,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:56:04,730 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:56:04,730 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:56:04,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:56:05,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:56:05,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:56:05,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:56:05,168 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:56:05,169 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:56:05,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-23 17:56:05,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04cd29197/ab2a75dfc591490ebaf41221f47da26c/FLAGae104b246 [2020-10-23 17:56:05,892 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:56:05,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-23 17:56:05,908 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04cd29197/ab2a75dfc591490ebaf41221f47da26c/FLAGae104b246 [2020-10-23 17:56:06,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04cd29197/ab2a75dfc591490ebaf41221f47da26c [2020-10-23 17:56:06,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:56:06,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:56:06,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:06,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:56:06,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:56:06,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf2976a 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 17:56:06,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:06" (1/1) ... [2020-10-23 17:56:06,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:56:06,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:56:06,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:06,594 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:56:06,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:06,671 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:56:06,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:06 WrapperNode [2020-10-23 17:56:06,672 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:06,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:56:06,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:56:06,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:56:06,702 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 17:56:06,704 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 17:56:06,729 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 17:56:06,730 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 17:56:06,752 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 17:56:06,768 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 17:56:06,777 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 17:56:06,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:56:06,782 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:56:06,783 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:56:06,783 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:56:06,784 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 17:56:06,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:56:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:56:06,867 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:56:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-23 17:56:06,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-23 17:56:06,869 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:56:06,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:56:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:56:06,870 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:56:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:56:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-23 17:56:06,871 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-23 17:56:06,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:56:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:56:06,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:56:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:56:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:56:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-23 17:56:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:56:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:56:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:56:06,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-23 17:56:06,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:07,520 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:07,520 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-23 17:56:07,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:07 BoogieIcfgContainer [2020-10-23 17:56:07,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:07,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:07,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:07,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:07,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:06" (1/3) ... [2020-10-23 17:56:07,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385fcfc2 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 17:56:07,529 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 17:56:07,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385fcfc2 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 17:56:07,530 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 17:56:07,531 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-10-23 17:56:07,543 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:07,549 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:07,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:07,590 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:07,590 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:07,591 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:07,591 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:07,591 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:07,591 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:07,591 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:07,591 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-10-23 17:56:07,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-23 17:56:07,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:07,618 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] [2020-10-23 17:56:07,619 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:07,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:07,626 INFO L82 PathProgramCache]: Analyzing trace with hash -575871545, now seen corresponding path program 1 times [2020-10-23 17:56:07,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:07,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282072482] [2020-10-23 17:56:07,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:07,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:07,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-23 17:56:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:08,023 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 17:56:08,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282072482] [2020-10-23 17:56:08,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:08,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:56:08,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69173398] [2020-10-23 17:56:08,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:56:08,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:08,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:56:08,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:56:08,057 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-10-23 17:56:08,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:08,471 INFO L93 Difference]: Finished difference Result 121 states and 186 transitions. [2020-10-23 17:56:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:56:08,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-23 17:56:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:08,486 INFO L225 Difference]: With dead ends: 121 [2020-10-23 17:56:08,487 INFO L226 Difference]: Without dead ends: 57 [2020-10-23 17:56:08,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:56:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-23 17:56:08,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-23 17:56:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-23 17:56:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 73 transitions. [2020-10-23 17:56:08,563 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 73 transitions. Word has length 20 [2020-10-23 17:56:08,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:08,564 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 73 transitions. [2020-10-23 17:56:08,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:56:08,564 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 73 transitions. [2020-10-23 17:56:08,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 17:56:08,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:08,566 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] [2020-10-23 17:56:08,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:56:08,567 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:08,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1727493878, now seen corresponding path program 1 times [2020-10-23 17:56:08,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:08,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278708755] [2020-10-23 17:56:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:08,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:08,705 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:08,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:08,780 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:56:08,780 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:56:08,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:56:08,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:08 BoogieIcfgContainer [2020-10-23 17:56:08,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:56:08,836 INFO L168 Benchmark]: Toolchain (without parser) took 2566.63 ms. Allocated memory is still 159.4 MB. Free memory was 115.0 MB in the beginning and 102.5 MB in the end (delta: 12.5 MB). Peak memory consumption was 13.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,837 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 159.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:56:08,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 395.65 ms. Allocated memory is still 159.4 MB. Free memory was 114.6 MB in the beginning and 142.2 MB in the end (delta: -27.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,841 INFO L168 Benchmark]: Boogie Preprocessor took 108.79 ms. Allocated memory is still 159.4 MB. Free memory was 142.2 MB in the beginning and 139.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,841 INFO L168 Benchmark]: RCFGBuilder took 739.78 ms. Allocated memory is still 159.4 MB. Free memory was 139.8 MB in the beginning and 112.5 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,844 INFO L168 Benchmark]: TraceAbstraction took 1309.14 ms. Allocated memory is still 159.4 MB. Free memory was 112.0 MB in the beginning and 102.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:08,850 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 159.4 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 395.65 ms. Allocated memory is still 159.4 MB. Free memory was 114.6 MB in the beginning and 142.2 MB in the end (delta: -27.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 108.79 ms. Allocated memory is still 159.4 MB. Free memory was 142.2 MB in the beginning and 139.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 739.78 ms. Allocated memory is still 159.4 MB. Free memory was 139.8 MB in the beginning and 112.5 MB in the end (delta: 27.4 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1309.14 ms. Allocated memory is still 159.4 MB. Free memory was 112.0 MB in the beginning and 102.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.0 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 bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967311, \old(Zero_fmod)=4294967299, \old(Zero_fmod)=4294967307, one_fmod=1, Zero_fmod={9:0}] [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=4294967308, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=4294967308, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967308, one_fmod=1, x=0, y=4294967308, Zero_fmod={9:0}] [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)=0, \old(y)=4294967308, one_fmod=1, sx=-1, x=0, y=4294967308, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967308, hx=2139095040, hy=2139095041, one_fmod=1, sx=-1, x=0, y=4294967308, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967309, one_fmod=1, x=0, y=4294967308, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=4294967309, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967308, Zero_fmod={9:0}] [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] CALL reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "float_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 65 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: 76 SDtfs, 16 SDslu, 60 SDs, 0 SdLazy, 79 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 1330 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...