/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:08,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:08,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:08,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:57:08,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:57:08,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:57:08,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:57:08,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:57:08,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:57:08,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:57:08,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:57:08,723 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:57:08,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:08,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:08,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:08,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:08,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:08,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:08,742 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:08,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:08,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:08,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:08,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:08,757 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:08,769 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:57:08,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:08,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:08,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:08,784 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 [2020-11-06 21:57:08,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:08,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:08,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:08,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:08,841 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:08,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:08,841 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:08,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:08,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:08,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:08,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:08,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:08,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:08,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:08,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:08,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:08,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:08,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:08,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:08,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:08,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:08,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:08,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:08,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:08,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:08,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:08,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:08,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:08,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:08,846 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:09,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:09,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:09,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:09,243 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:09,246 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:09,247 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011b.c [2020-11-06 21:57:09,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04eddc369/14cff998c5fa48779c584f0793a9a47e/FLAGc20cb5835 [2020-11-06 21:57:09,941 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:09,942 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1011b.c [2020-11-06 21:57:09,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04eddc369/14cff998c5fa48779c584f0793a9a47e/FLAGc20cb5835 [2020-11-06 21:57:10,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04eddc369/14cff998c5fa48779c584f0793a9a47e [2020-11-06 21:57:10,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:10,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:10,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:10,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:10,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:10,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188d3348 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10, skipping insertion in model container [2020-11-06 21:57:10,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:10,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:10,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:10,645 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:10,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:10,692 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:10,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10 WrapperNode [2020-11-06 21:57:10,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:10,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:10,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:10,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:10,710 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,743 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:10,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:10,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:10,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:10,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (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 [2020-11-06 21:57:10,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-06 21:57:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-11-06 21:57:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:10,833 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-06 21:57:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-11-06 21:57:10,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:10,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:11,298 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:11,299 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-06 21:57:11,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:11 BoogieIcfgContainer [2020-11-06 21:57:11,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:11,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:11,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:11,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:11,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:10" (1/3) ... [2020-11-06 21:57:11,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b25f172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:11, skipping insertion in model container [2020-11-06 21:57:11,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (2/3) ... [2020-11-06 21:57:11,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b25f172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:11, skipping insertion in model container [2020-11-06 21:57:11,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:11" (3/3) ... [2020-11-06 21:57:11,311 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011b.c [2020-11-06 21:57:11,330 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:11,334 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:11,349 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:11,380 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:11,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:11,381 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:11,381 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:11,381 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:11,381 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:11,381 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:11,382 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-11-06 21:57:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-06 21:57:11,412 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:11,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:57:11,414 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:11,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:11,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1620995038, now seen corresponding path program 1 times [2020-11-06 21:57:11,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:11,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939703265] [2020-11-06 21:57:11,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:11,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:11,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:11,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939703265] [2020-11-06 21:57:11,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:11,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:11,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746363750] [2020-11-06 21:57:11,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:11,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:11,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:11,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:11,887 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-11-06 21:57:12,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:12,105 INFO L93 Difference]: Finished difference Result 61 states and 77 transitions. [2020-11-06 21:57:12,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:12,107 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-06 21:57:12,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:12,116 INFO L225 Difference]: With dead ends: 61 [2020-11-06 21:57:12,116 INFO L226 Difference]: Without dead ends: 29 [2020-11-06 21:57:12,120 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 [2020-11-06 21:57:12,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-06 21:57:12,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-06 21:57:12,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-06 21:57:12,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-06 21:57:12,166 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 18 [2020-11-06 21:57:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:12,167 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-06 21:57:12,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-06 21:57:12,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-06 21:57:12,171 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:12,172 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] [2020-11-06 21:57:12,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:12,172 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:12,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:12,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1641968991, now seen corresponding path program 1 times [2020-11-06 21:57:12,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:12,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162891270] [2020-11-06 21:57:12,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:12,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:12,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:12,257 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:12,311 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:12,312 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:12,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:12,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:12 BoogieIcfgContainer [2020-11-06 21:57:12,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:12,369 INFO L168 Benchmark]: Toolchain (without parser) took 2023.13 ms. Allocated memory is still 161.5 MB. Free memory was 135.9 MB in the beginning and 97.5 MB in the end (delta: 38.4 MB). Peak memory consumption was 39.6 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,370 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 161.5 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:12,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.51 ms. Allocated memory is still 161.5 MB. Free memory was 135.3 MB in the beginning and 125.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,372 INFO L168 Benchmark]: Boogie Preprocessor took 48.79 ms. Allocated memory is still 161.5 MB. Free memory was 125.0 MB in the beginning and 123.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,373 INFO L168 Benchmark]: RCFGBuilder took 557.10 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 142.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,376 INFO L168 Benchmark]: TraceAbstraction took 1061.83 ms. Allocated memory is still 161.5 MB. Free memory was 141.6 MB in the beginning and 97.5 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 161.5 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 340.51 ms. Allocated memory is still 161.5 MB. Free memory was 135.3 MB in the beginning and 125.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.79 ms. Allocated memory is still 161.5 MB. Free memory was 125.0 MB in the beginning and 123.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 557.10 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 142.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1061.83 ms. Allocated memory is still 161.5 MB. Free memory was 141.6 MB in the beginning and 97.5 MB in the end (delta: 44.0 MB). Peak memory consumption was 44.0 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 someBinaryDOUBLEComparisonOperation at line 53, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L49] double x = -0.0; [L50] CALL, EXPR fabs_double(x) VAL [\old(x)=63] [L28] __uint32_t high; VAL [\old(x)=63, x=63] [L30] ieee_double_shape_type gh_u; [L31] gh_u.value = (x) [L32] EXPR gh_u.parts.msw [L32] (high) = gh_u.parts.msw [L35] ieee_double_shape_type sh_u; [L36] sh_u.value = (x) [L37] sh_u.parts.msw = (high & 0x7fffffff) [L38] EXPR sh_u.value [L38] (x) = sh_u.value [L40] return x; VAL [\old(x)=63, \result=63, high=65, x=63] [L50] RET, EXPR fabs_double(x) VAL [fabs_double(x)=63, x=63] [L50] double res = fabs_double(x); [L53] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=63, res == 0.0 && __signbit_double(res) == 0=0, x=63] [L53] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L54] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1011b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 8 SDslu, 23 SDs, 0 SdLazy, 28 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=36occurred 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, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1003 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...