/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:28:36,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:28:36,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:28:36,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:28:36,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:28:36,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:28:36,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:28:36,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:28:36,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:28:36,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:28:36,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:28:36,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:28:36,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:28:36,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:28:36,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:28:36,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:28:36,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:28:36,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:28:36,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:28:36,782 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:28:36,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:28:36,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:28:36,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:28:36,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:28:36,790 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 05:28:36,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 05:28:36,790 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 05:28:36,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 05:28:36,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 05:28:36,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 05:28:36,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 05:28:36,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 05:28:36,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 05:28:36,795 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 05:28:36,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 05:28:36,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 05:28:36,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 05:28:36,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 05:28:36,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:28:36,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:28:36,799 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:28:36,800 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 [2020-07-20 05:28:36,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:28:36,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:28:36,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:28:36,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:28:36,820 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:28:36,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:28:36,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:28:36,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:28:36,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:28:36,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:28:36,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:28:36,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:28:36,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:28:36,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:28:36,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:28:36,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:28:36,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:28:36,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:28:36,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:28:36,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:28:36,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:28:36,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:28:36,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:28:36,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:28:36,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:28:36,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:28:36,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:28:36,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:28:36,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:28:36,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 05:28:37,132 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:28:37,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:28:37,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:28:37,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:28:37,150 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:28:37,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052a.c [2020-07-20 05:28:37,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/443a3b9f8/d9d75f27fd51420fb6b21b16334023c0/FLAG63b91ce90 [2020-07-20 05:28:37,680 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:28:37,681 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052a.c [2020-07-20 05:28:37,690 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/443a3b9f8/d9d75f27fd51420fb6b21b16334023c0/FLAG63b91ce90 [2020-07-20 05:28:38,038 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/443a3b9f8/d9d75f27fd51420fb6b21b16334023c0 [2020-07-20 05:28:38,049 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:28:38,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:28:38,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:28:38,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:28:38,057 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:28:38,058 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:28:38" (1/1) ... [2020-07-20 05:28:38,061 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b874df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38, skipping insertion in model container [2020-07-20 05:28:38,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:28:38" (1/1) ... [2020-07-20 05:28:38,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:28:38,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:28:38,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:28:38,276 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:28:38,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:28:38,328 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:28:38,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38 WrapperNode [2020-07-20 05:28:38,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:28:38,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:28:38,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:28:38,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:28:38,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38" (1/1) ... [2020-07-20 05:28:38,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38" (1/1) ... [2020-07-20 05:28:38,437 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38" (1/1) ... [2020-07-20 05:28:38,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38" (1/1) ... [2020-07-20 05:28:38,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38" (1/1) ... [2020-07-20 05:28:38,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38" (1/1) ... [2020-07-20 05:28:38,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38" (1/1) ... [2020-07-20 05:28:38,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:28:38,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:28:38,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:28:38,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:28:38,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38" (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 [2020-07-20 05:28:38,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:28:38,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:28:38,536 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-07-20 05:28:38,536 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-07-20 05:28:38,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:28:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:28:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-07-20 05:28:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 05:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 05:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 05:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 05:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 05:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 05:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-07-20 05:28:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:28:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:28:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:28:38,853 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:28:38,853 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 05:28:38,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:28:38 BoogieIcfgContainer [2020-07-20 05:28:38,859 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:28:38,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:28:38,861 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:28:38,864 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:28:38,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:28:38" (1/3) ... [2020-07-20 05:28:38,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649882b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:28:38, skipping insertion in model container [2020-07-20 05:28:38,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:28:38" (2/3) ... [2020-07-20 05:28:38,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649882b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:28:38, skipping insertion in model container [2020-07-20 05:28:38,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:28:38" (3/3) ... [2020-07-20 05:28:38,869 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052a.c [2020-07-20 05:28:38,882 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:28:38,889 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:28:38,906 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:28:38,932 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:28:38,932 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:28:38,932 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:28:38,932 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:28:38,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:28:38,933 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:28:38,933 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:28:38,933 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:28:38,958 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-20 05:28:38,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 05:28:38,966 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:38,967 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] [2020-07-20 05:28:38,968 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:38,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:38,974 INFO L82 PathProgramCache]: Analyzing trace with hash -305625155, now seen corresponding path program 1 times [2020-07-20 05:28:38,984 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:38,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958517255] [2020-07-20 05:28:38,985 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7072e04c [2020-07-20 05:28:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:39,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:28:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:28:39,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958517255] [2020-07-20 05:28:39,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:28:39,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 05:28:39,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890248730] [2020-07-20 05:28:39,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 05:28:39,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:28:39,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 05:28:39,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 05:28:39,315 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-07-20 05:28:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:28:39,567 INFO L93 Difference]: Finished difference Result 76 states and 107 transitions. [2020-07-20 05:28:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 05:28:39,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 05:28:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:28:39,580 INFO L225 Difference]: With dead ends: 76 [2020-07-20 05:28:39,581 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 05:28:39,585 INFO L675 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 [2020-07-20 05:28:39,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 05:28:39,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-20 05:28:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 05:28:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-07-20 05:28:39,633 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 24 [2020-07-20 05:28:39,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:28:39,634 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-07-20 05:28:39,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 05:28:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-07-20 05:28:39,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 05:28:39,635 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:28:39,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:28:39,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:28:39,636 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:28:39,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:28:39,637 INFO L82 PathProgramCache]: Analyzing trace with hash -231212118, now seen corresponding path program 1 times [2020-07-20 05:28:39,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:28:39,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054153532] [2020-07-20 05:28:39,638 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@7072e04c [2020-07-20 05:28:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:28:39,799 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:28:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 05:28:39,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 05:28:39,901 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 05:28:39,901 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 05:28:39,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:28:39,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:28:39 BoogieIcfgContainer [2020-07-20 05:28:39,939 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:28:39,943 INFO L168 Benchmark]: Toolchain (without parser) took 1890.78 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 101.1 MB in the beginning and 102.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:39,944 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 05:28:39,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.41 ms. Allocated memory is still 136.8 MB. Free memory was 100.6 MB in the beginning and 89.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:39,946 INFO L168 Benchmark]: Boogie Preprocessor took 130.43 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 89.6 MB in the beginning and 178.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:39,947 INFO L168 Benchmark]: RCFGBuilder took 399.10 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 157.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:39,948 INFO L168 Benchmark]: TraceAbstraction took 1078.80 ms. Allocated memory is still 200.8 MB. Free memory was 156.7 MB in the beginning and 102.3 MB in the end (delta: 54.3 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. [2020-07-20 05:28:39,952 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.41 ms. Allocated memory is still 136.8 MB. Free memory was 100.6 MB in the beginning and 89.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.43 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 89.6 MB in the beginning and 178.1 MB in the end (delta: -88.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.10 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 157.4 MB in the end (delta: 20.7 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1078.80 ms. Allocated memory is still 200.8 MB. Free memory was 156.7 MB in the beginning and 102.3 MB in the end (delta: 54.3 MB). Peak memory consumption was 54.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000] [L75] float x = 1.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L76] CALL, EXPR floor_float(x) VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000] [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000009] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000009] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000009] [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; VAL [\old(x)=1000000000000000000000000000009, huge_floor=1000000000000000000000000000000, i=18014396353609728, i0=0, j0=2147483264, x=1000000000000000000000000000009] [L76] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000009] [L76] float res = floor_float(x); [L79] CALL, EXPR isinf_float(res) VAL [\old(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000] [L58] __int32_t ix; VAL [\old(x)=1000000000000000000000000000002, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000002] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); VAL [\old(x)=1000000000000000000000000000002, \result=0, huge_floor=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000002] [L79] RET, EXPR isinf_float(res) VAL [huge_floor=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000002, x=1000000000000000000000000000009] [L79] COND TRUE !isinf_float(res) [L80] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000002, x=1000000000000000000000000000009] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 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: 44 SDtfs, 39 SDslu, 5 SDs, 0 SdLazy, 49 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1357 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...