/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_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:45,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:45,695 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:45,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:45,751 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:45,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:45,759 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:45,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:45,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:45,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:45,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:45,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:45,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:45,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:45,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:45,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:45,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:45,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:45,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:45,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:45,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:45,816 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:45,818 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:45,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:45,829 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:45,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:45,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:45,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:45,843 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 17:55:45,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:45,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:45,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:45,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:45,903 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:45,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:45,903 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:45,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:45,904 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:45,904 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:45,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:45,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:45,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:45,906 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:45,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:45,906 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:45,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:45,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:45,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:45,907 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:45,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:45,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:45,909 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:45,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:45,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:45,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:45,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:45,910 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:45,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:45,911 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:46,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:46,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:46,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:46,365 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:46,366 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:46,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-10-23 17:55:46,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da5fd1ef/1a9c643b76ef45659e043cd9ce329cf7/FLAG5f23e5722 [2020-10-23 17:55:47,049 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:47,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-10-23 17:55:47,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da5fd1ef/1a9c643b76ef45659e043cd9ce329cf7/FLAG5f23e5722 [2020-10-23 17:55:47,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9da5fd1ef/1a9c643b76ef45659e043cd9ce329cf7 [2020-10-23 17:55:47,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:47,451 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:47,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:47,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:47,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:47,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:47" (1/1) ... [2020-10-23 17:55:47,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c096cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47, skipping insertion in model container [2020-10-23 17:55:47,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:47" (1/1) ... [2020-10-23 17:55:47,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:47,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:47,728 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:47,737 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:47,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:47,796 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:47,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47 WrapperNode [2020-10-23 17:55:47,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:47,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:47,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:47,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:47,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47" (1/1) ... [2020-10-23 17:55:47,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47" (1/1) ... [2020-10-23 17:55:47,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47" (1/1) ... [2020-10-23 17:55:47,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47" (1/1) ... [2020-10-23 17:55:47,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47" (1/1) ... [2020-10-23 17:55:47,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47" (1/1) ... [2020-10-23 17:55:47,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47" (1/1) ... [2020-10-23 17:55:47,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:47,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:47,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:47,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:47,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47" (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 17:55:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-10-23 17:55:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-23 17:55:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:47,909 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-10-23 17:55:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:47,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-23 17:55:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:47,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:47,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:48,318 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:48,318 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 17:55:48,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:48 BoogieIcfgContainer [2020-10-23 17:55:48,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:48,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:48,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:48,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:48,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:47" (1/3) ... [2020-10-23 17:55:48,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261e8971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:48, skipping insertion in model container [2020-10-23 17:55:48,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:47" (2/3) ... [2020-10-23 17:55:48,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261e8971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:48, skipping insertion in model container [2020-10-23 17:55:48,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:48" (3/3) ... [2020-10-23 17:55:48,329 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a.c [2020-10-23 17:55:48,340 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:48,344 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:48,357 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:48,393 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:48,393 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:48,393 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:48,393 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:48,394 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:48,394 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:48,394 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:48,394 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:48,419 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-23 17:55:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 17:55:48,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:48,426 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] [2020-10-23 17:55:48,427 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:48,441 INFO L82 PathProgramCache]: Analyzing trace with hash 183956236, now seen corresponding path program 1 times [2020-10-23 17:55:48,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:48,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879352938] [2020-10-23 17:55:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:48,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 17:55:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:48,806 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 17:55:48,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879352938] [2020-10-23 17:55:48,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:48,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:48,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421782040] [2020-10-23 17:55:48,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:48,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:48,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:48,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:48,828 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-10-23 17:55:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:48,967 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-23 17:55:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:48,969 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-23 17:55:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:48,977 INFO L225 Difference]: With dead ends: 59 [2020-10-23 17:55:48,978 INFO L226 Difference]: Without dead ends: 28 [2020-10-23 17:55:48,981 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 17:55:49,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-23 17:55:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-23 17:55:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-23 17:55:49,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-10-23 17:55:49,051 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 24 [2020-10-23 17:55:49,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:49,052 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-10-23 17:55:49,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:49,052 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-10-23 17:55:49,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 17:55:49,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:49,055 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] [2020-10-23 17:55:49,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:49,055 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:49,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:49,058 INFO L82 PathProgramCache]: Analyzing trace with hash 705582843, now seen corresponding path program 1 times [2020-10-23 17:55:49,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:49,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002066989] [2020-10-23 17:55:49,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:49,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:49,263 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:49,314 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:49,315 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:49,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:49,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:49 BoogieIcfgContainer [2020-10-23 17:55:49,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:49,386 INFO L168 Benchmark]: Toolchain (without parser) took 1935.18 ms. Allocated memory is still 153.1 MB. Free memory was 128.4 MB in the beginning and 89.5 MB in the end (delta: 38.9 MB). Peak memory consumption was 38.2 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:49,387 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 153.1 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:49,389 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.71 ms. Allocated memory is still 153.1 MB. Free memory was 127.7 MB in the beginning and 118.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:49,391 INFO L168 Benchmark]: Boogie Preprocessor took 37.42 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 116.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:49,393 INFO L168 Benchmark]: RCFGBuilder took 484.40 ms. Allocated memory is still 153.1 MB. Free memory was 116.2 MB in the beginning and 136.8 MB in the end (delta: -20.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:49,395 INFO L168 Benchmark]: TraceAbstraction took 1056.81 ms. Allocated memory is still 153.1 MB. Free memory was 136.2 MB in the beginning and 90.0 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:49,408 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 153.1 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 340.71 ms. Allocated memory is still 153.1 MB. Free memory was 127.7 MB in the beginning and 118.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.42 ms. Allocated memory is still 153.1 MB. Free memory was 118.0 MB in the beginning and 116.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 484.40 ms. Allocated memory is still 153.1 MB. Free memory was 116.2 MB in the beginning and 136.8 MB in the end (delta: -20.6 MB). Peak memory consumption was 20.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1056.81 ms. Allocated memory is still 153.1 MB. Free memory was 136.2 MB in the beginning and 90.0 MB in the end (delta: 46.2 MB). Peak memory consumption was 46.1 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 someBinaryArithmeticFLOAToperation at line 48, overapproximation of bitwiseAnd at line 36. Possible FailurePath: [L48] float x = 1.0f / 0.0f; [L49] CALL, EXPR fabs_float(x) VAL [\old(x)=65] [L14] __uint32_t ix; VAL [\old(x)=65, x=65] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (ix) = gf_u.word [L21] ieee_float_shape_type sf_u; [L22] sf_u.word = (ix & 0x7fffffff) [L23] EXPR sf_u.value [L23] (x) = sf_u.value [L25] return x; VAL [\old(x)=65, \result=61, ix=52, x=61] [L49] RET, EXPR fabs_float(x) VAL [fabs_float(x)=61, x=65] [L49] float res = fabs_float(x); [L52] CALL, EXPR isinf_float(res) VAL [\old(x)=61] [L30] __int32_t ix; VAL [\old(x)=61, x=61] [L32] ieee_float_shape_type gf_u; [L33] gf_u.value = (x) [L34] EXPR gf_u.word [L34] (ix) = gf_u.word [L36] ix &= 0x7fffffff [L37] return ((ix) == 0x7f800000L); VAL [\old(x)=61, \result=0, ix=0, x=61] [L52] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=61, x=65] [L52] COND TRUE !isinf_float(res) [L53] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 8 SDslu, 21 SDs, 0 SdLazy, 26 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1771 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...